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本发明涉及移动通信,特别是一种资源指示、确定方法及装置、网络侧设备及移动通信终端。The present invention relates to mobile communication, in particular to a resource indication and determination method and device, network side equipment and mobile communication terminal.
背景技术Background technique
LTE(Long Term Evolution,长期演进)系统中,通过PDCCH(Physical DownlinkControl Channel,物理下行控制信道)指示UE(User Equipment,用户设备)所对应的PDSCH(Physical Downlink Shared Channel物理下行共享信道)和PUSCH(Physical UplinkShared Channel,物理上行共享信道)在子帧中的位置、传输格式以及功率信息等。In the LTE (Long Term Evolution, Long Term Evolution) system, the PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Downlink Shared Channel) and PUSCH ( The location, transmission format and power information of the Physical Uplink Shared Channel in the subframe, etc.
UE通过读取PDCCH中的控制信息以正确的解调和发送数据。目前随着时延要求越来越高,不管是TDD((Time Division Duplexing,时分复用),还是FDD((FrequencyDivision Duplexing,频分复用),都已经确定可以支持持续时间更短的TTI(TransferTime Interval,传输时间间隔)。The UE can demodulate and transmit data correctly by reading the control information in the PDCCH. At present, as the delay requirements are getting higher and higher, whether it is TDD ((Time Division Duplexing, time division multiplexing) or FDD ((Frequency Division Duplexing, frequency division multiplexing), it has been determined that it can support TTI with a shorter duration ( TransferTime Interval, transfer time interval).
现有的PDCCH是每个子帧传输一次,位于子帧的起始位置。但针对持续时间更短的TTI,即sTTI,目前业界还没有PDCCH的设计方案。The existing PDCCH is transmitted once per subframe and is located at the beginning of the subframe. However, for a TTI with a shorter duration, that is, sTTI, there is currently no design solution for a PDCCH in the industry.
发明内容SUMMARY OF THE INVENTION
本发明实施例中,从与业务信道时分复用,频分复用及离散时频复用的角度给出了下行控制信道的资源分配方案,能够解决由于TTI变短可能导致的部分问题。In the embodiments of the present invention, a resource allocation scheme for downlink control channels is provided from the perspectives of time division multiplexing, frequency division multiplexing and discrete time-frequency multiplexing with traffic channels, which can solve some problems that may be caused by shortening TTI.
为实现上述目的,本发明实施例提供了一种资源指示方法,用于网络侧设备,所述资源指示方法包括:To achieve the above object, an embodiment of the present invention provides a resource indication method for a network side device, where the resource indication method includes:
确定一指示为下行控制信道分配的传输资源的频域特征和时域特征的资源位置指示参数;determining a resource location indication parameter indicating the frequency domain characteristics and time domain characteristics of the transmission resources allocated for the downlink control channel;
传输所述资源位置指示参数到移动通信终端,指示移动通信终端依据所述资源位置指示参数所指示的频域特征和时域特征确定所述传输资源。The resource location indication parameter is transmitted to the mobile communication terminal, and the mobile communication terminal is instructed to determine the transmission resource according to the frequency domain characteristic and the time domain characteristic indicated by the resource location indication parameter.
为实现上述目的,本发明实施例还提供了一种资源确定方法,用于移动通信终端,所述资源确定方法包括:To achieve the above object, an embodiment of the present invention further provides a resource determination method for a mobile communication terminal, where the resource determination method includes:
从网络侧接收资源位置指示参数;receiving the resource location indication parameter from the network side;
依据所述资源位置指示参数所指示的为下行控制信道分配的传输资源的频域特征和时域特征确定所述传输资源。The transmission resource is determined according to the frequency domain characteristic and the time domain characteristic of the transmission resource allocated for the downlink control channel indicated by the resource location indication parameter.
为实现上述目的,本发明实施例还提供了一种资源指示装置,用于网络侧设备,所述资源指示装置包括:To achieve the above object, an embodiment of the present invention further provides a resource indication apparatus for use in a network side device, where the resource indication apparatus includes:
指示参数确定模块,用于确定一指示为下行控制信道分配的传输资源的频域特征和时域特征的资源位置指示参数;an indication parameter determination module, configured to determine a resource location indication parameter indicating frequency domain characteristics and time domain characteristics of the transmission resources allocated for the downlink control channel;
指示参数传输模块,用于传输所述资源位置指示参数到移动通信终端,指示移动通信终端依据所述资源位置指示参数所指示的频域特征和时域特征确定所述传输资源。The indication parameter transmission module is configured to transmit the resource location indication parameter to the mobile communication terminal, and instruct the mobile communication terminal to determine the transmission resource according to the frequency domain characteristic and time domain characteristic indicated by the resource location indication parameter.
为实现上述目的,本发明实施例还提供了一种资源确定装置,用于移动通信终端,所述资源确定装置包括:In order to achieve the above object, an embodiment of the present invention further provides a resource determination device for a mobile communication terminal, where the resource determination device includes:
频域参数接收模块,用于从网络侧接收资源位置指示参数;a frequency domain parameter receiving module, used for receiving resource location indication parameters from the network side;
第一资源确定模块,用于依据所述资源位置指示参数所指示的为下行控制信道分配的传输资源的频域特征和时域特征确定所述传输资源。The first resource determination module is configured to determine the transmission resource according to the frequency domain characteristic and the time domain characteristic of the transmission resource allocated for the downlink control channel indicated by the resource location indication parameter.
为实现上述目的,本发明实施例还提供了一种资源指示方法,用于网络侧设备,所述资源指示方法包括:To achieve the above object, an embodiment of the present invention further provides a resource indication method for a network side device, where the resource indication method includes:
基于基准传输资源集合为下行控制信道分配原始传输资源;Allocate original transmission resources for downlink control channels based on the reference transmission resource set;
根据所述原始传输资源在基准传输资源集合的分布确定一第一资源分配指示;determining a first resource allocation indication according to the distribution of the original transmission resources in the reference transmission resource set;
根据当前调度使用的实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中实际为下行控制信道分配的目标传输资源;According to the resource mapping rule between the actual transmission resource set used in the current scheduling and the reference transmission resource set, determine the target transmission resource actually allocated for the downlink control channel in the actual transmission resource set;
传输所述第一资源分配指示到移动通信终端,由所述移动通信终端根据所述第一资源分配指示确定所述原始传输资源,并根据所述资源映射规则确定所述实际传输资源集合中的所述目标传输资源。The first resource allocation indication is transmitted to the mobile communication terminal, and the mobile communication terminal determines the original transmission resource according to the first resource allocation indication, and determines the actual transmission resource set according to the resource mapping rule. the target transmission resource.
为实现上述目的,本发明实施例还提供了一种资源确定方法,用于移动通信终端,所述资源确定方法包括:To achieve the above object, an embodiment of the present invention further provides a resource determination method for a mobile communication terminal, where the resource determination method includes:
从网络侧接收第一资源分配指示;receiving a first resource allocation indication from the network side;
根据所述第一资源分配指示确定基准传输资源集合中的原始传输资源;Determine the original transmission resource in the reference transmission resource set according to the first resource allocation indication;
根据所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中与所述原始传输资源对应的,由网络侧实际为下行控制信道分配的目标传输资源。According to the resource mapping rule between the actual transmission resource set and the reference transmission resource set, the target transmission resource actually allocated by the network side for the downlink control channel corresponding to the original transmission resource in the actual transmission resource set is determined.
为实现上述目的,本发明实施例还提供了一种资源指示装置,用于网络侧设备,所述资源指示装置包括:To achieve the above object, an embodiment of the present invention further provides a resource indication apparatus for use in a network side device, where the resource indication apparatus includes:
分配模块,用于基于基准传输资源集合为下行控制信道分配原始传输资源;an allocation module, configured to allocate original transmission resources for the downlink control channel based on the reference transmission resource set;
第一指示确定模块,用于根据所述原始传输资源在基准传输资源集合的分布确定一第一资源分配指示;a first indication determination module, configured to determine a first resource allocation indication according to the distribution of the original transmission resources in the reference transmission resource set;
第一映射模块,用于据当前调度使用的所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中实际为下行控制信道分配的目标传输资源;a first mapping module, configured to determine the target transmission resource actually allocated for the downlink control channel in the actual transmission resource set according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set used in the current scheduling;
第一指示传输模块,用于传输所述第一资源分配指示到移动通信终端,由所述移动通信终端根据所述第一资源分配指示确定所述原始传输资源,并根据所述资源映射规则确定所述实际传输资源集合中的所述目标传输资源。a first indication transmission module, configured to transmit the first resource allocation indication to a mobile communication terminal, and the mobile communication terminal determines the original transmission resource according to the first resource allocation indication, and determines according to the resource mapping rule the target transmission resource in the actual transmission resource set.
为实现上述目的,本发明实施例还提供了一种资源确定装置,用于移动通信终端,所述资源确定装置包括:In order to achieve the above object, an embodiment of the present invention further provides a resource determination device for a mobile communication terminal, where the resource determination device includes:
第一指示接收模块,用于从网络侧接收第一资源分配指示;a first instruction receiving module, configured to receive a first resource allocation instruction from the network side;
原始传输资源确定模块,用于根据所述第一资源分配指示确定基准传输资源集合中的原始传输资源;an original transmission resource determining module, configured to determine an original transmission resource in the reference transmission resource set according to the first resource allocation indication;
第二映射模块,用于根据所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中与所述原始传输资源对应的,由网络侧实际为下行控制信道分配的目标传输资源。The second mapping module is configured to determine, according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set, the actual transmission resource set in the actual transmission resource set corresponding to the original transmission resource, and the network side actually controls the downlink The target transmission resource allocated by the channel.
为实现上述目的,本发明实施例还提供了一种资源指示方法,用于网络侧设备,所述资源指示方法包括:To achieve the above object, an embodiment of the present invention further provides a resource indication method for a network side device, where the resource indication method includes:
确定记录为下行控制信道分配的传输资源与参考资源的资源位置相对关系的位置参数;Determine the location parameter that records the relative relationship between the resource location of the transmission resource allocated for the downlink control channel and the reference resource;
传输所述位置参数到移动通信终端,指示移动通信终端根据传输资源与参考资源的资源位置相对关系确定所述传输资源。The location parameter is transmitted to the mobile communication terminal, and the mobile communication terminal is instructed to determine the transmission resource according to the resource position relative relationship between the transmission resource and the reference resource.
为实现上述目的,本发明实施例还提供了一种资源确定方法,用于移动通信终端,所述资源确定方法包括:To achieve the above object, an embodiment of the present invention further provides a resource determination method for a mobile communication terminal, where the resource determination method includes:
从网络侧接收记录传输资源与参考资源的资源位置相对关系的位置参数;Receive, from the network side, a location parameter that records the relative relationship between the resource location of the transmission resource and the reference resource;
根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源。The transmission resource is determined according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource.
为实现上述目的,本发明实施例还提供了一种资源指示装置,用于网络侧设备,所述资源指示装置包括:To achieve the above object, an embodiment of the present invention further provides a resource indication apparatus for use in a network side device, where the resource indication apparatus includes:
位置参数确定模块,用于确定记录为下行控制信道分配的传输资源与参考资源的资源位置相对关系的位置参数;a location parameter determination module, configured to determine a location parameter that records the relative relationship between the resource location of the transmission resource allocated for the downlink control channel and the reference resource;
位置参数传输模块,用于传输所述位置参数到移动通信终端,指示移动通信终端根据传输资源与参考资源的资源位置相对关系确定所述传输资源。The location parameter transmission module is used for transmitting the location parameter to the mobile communication terminal, and instructing the mobile communication terminal to determine the transmission resource according to the resource position relative relationship between the transmission resource and the reference resource.
为实现上述目的,本发明实施例还提供了一种资源确定装置,用于移动通信终端,所述资源确定装置包括:In order to achieve the above object, an embodiment of the present invention further provides a resource determination device for a mobile communication terminal, where the resource determination device includes:
位置参数接收模块,用于从网络侧接收记录传输资源与参考资源的资源位置相对关系的位置参数;a location parameter receiving module, configured to receive, from the network side, a location parameter that records the relative relationship between the resource location of the transmission resource and the reference resource;
第三资源确定模块,用于根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源。The third resource determination module is configured to determine the transmission resource according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource.
为实现上述目的,本发明实施例还提供了一种资源确定方法,用于网络侧或移动通信终端,包括:To achieve the above purpose, an embodiment of the present invention further provides a method for determining resources, which is used on the network side or a mobile communication terminal, including:
根据当前下行控制信道的实际开销,从预先定义的与开销对应的资源配置方案中选择满足要求资源配置方案;According to the actual overhead of the current downlink control channel, select a resource configuration scheme that meets the requirements from the predefined resource configuration schemes corresponding to the overhead;
根据满足要求的资源配置方案进行下行控制信道资源的分配或确认。Allocate or confirm downlink control channel resources according to the resource allocation scheme that meets the requirements.
为实现上述目的,本发明实施例还提供了一种资源确定装置,用于网络侧或移动通信终端,包括:In order to achieve the above purpose, an embodiment of the present invention further provides a resource determination device, which is used on the network side or a mobile communication terminal, including:
方案选择模块,用于根据当前下行控制信道的实际开销,从预先定义的与开销对应的资源配置方案中选择满足要求资源配置方案;a scheme selection module, configured to select a resource configuration scheme that meets the requirements from a predefined resource configuration scheme corresponding to the overhead according to the actual overhead of the current downlink control channel;
执行模块,用于根据满足要求的资源配置方案进行下行控制信道资源的分配或确认。The execution module is used for allocating or confirming downlink control channel resources according to the resource configuration scheme that meets the requirements.
为实现上述目的,本发明实施例还提供了一种网络侧设备,包括上述任意的资源指示装置。To achieve the above purpose, an embodiment of the present invention further provides a network-side device, including any of the above-mentioned resource indication apparatuses.
为实现上述目的,本发明实施例还提供了一种移动通信终端,包括上述任意的资源确定装置。To achieve the above objective, an embodiment of the present invention further provides a mobile communication terminal, including any of the above-mentioned resource determination apparatuses.
本发明实施例,从与业务信道时分复用,频分复用及离散时频复用的角度给出了下行控制信道的资源分配方案,能够解决由于TTI变短可能导致的部分问题。The embodiment of the present invention provides a resource allocation scheme for downlink control channels from the perspectives of time division multiplexing, frequency division multiplexing and discrete time-frequency multiplexing with traffic channels, which can solve some problems that may be caused by shortening TTI.
附图说明Description of drawings
图1表示本发明第一实施例的资源指示方法的流程示意图;FIG. 1 shows a schematic flowchart of a resource indication method according to a first embodiment of the present invention;
图2表示本发明实施例中包括多个TTI的子帧的结构示意图;FIG. 2 shows a schematic structural diagram of a subframe including multiple TTIs in an embodiment of the present invention;
图3表示本发明第二实施例的资源确定方法的流程示意图;FIG. 3 shows a schematic flowchart of a resource determination method according to a second embodiment of the present invention;
图4表示本发明第三实施例的资源指示装置的结构示意图;FIG. 4 is a schematic structural diagram of a resource indicating device according to a third embodiment of the present invention;
图5表示本发明第四实施例的资源确定装置的结构示意图;FIG. 5 is a schematic structural diagram of a resource determination apparatus according to a fourth embodiment of the present invention;
图6表示本发明第五实施例的资源指示方法的流程示意图;FIG. 6 is a schematic flowchart of a resource indication method according to a fifth embodiment of the present invention;
图7表示本发明第六实施例的资源确定方法的流程示意图;7 shows a schematic flowchart of a resource determination method according to a sixth embodiment of the present invention;
图8表示本发明实施例中的资源映射示意图;FIG. 8 shows a schematic diagram of resource mapping in an embodiment of the present invention;
图9a和9b表示本发明实施例中两种资源映射的结果示意图;9a and 9b show schematic diagrams of two types of resource mapping results in an embodiment of the present invention;
图10表示本发明第七实施例的资源指示装置的结构示意图;FIG. 10 is a schematic structural diagram of a resource indicating device according to a seventh embodiment of the present invention;
图11表示本发明第八实施例的资源确定装置的结构示意图;FIG. 11 is a schematic structural diagram of an apparatus for determining a resource according to an eighth embodiment of the present invention;
图12表示本发明第九实施例的资源指示方法的流程示意图;12 is a schematic flowchart of a resource indication method according to a ninth embodiment of the present invention;
图13a-图13j表示本发明第九实施例的各种图样的示意图;13a-13j are schematic diagrams showing various patterns of the ninth embodiment of the present invention;
图14表示本发明第十实施例的资源确定方法的流程示意图;FIG. 14 shows a schematic flowchart of a resource determination method according to a tenth embodiment of the present invention;
图15表示本发明第十一实施例的资源指示装置的结构示意图;FIG. 15 is a schematic structural diagram of a resource indication apparatus according to an eleventh embodiment of the present invention;
图16表示本发明第十二实施例的资源确定装置的结构示意图。FIG. 16 is a schematic structural diagram of a resource determination apparatus according to a twelfth embodiment of the present invention.
具体实施方式Detailed ways
本发明实施例中,从与业务信道时分复用,频分复用及离散时频复用的角度给出了下行控制信道的资源分配方案,能够解决由于TTI变短可能导致的问题。In the embodiment of the present invention, a resource allocation scheme for downlink control channels is provided from the perspectives of time division multiplexing, frequency division multiplexing and discrete time-frequency multiplexing with traffic channels, which can solve the problem that may be caused by shortening TTI.
现有技术中,PDCCH和其他信道通过时分的方式进行资源分配。但这种方式对于sTTI而言存在着资源利用率过低的问题,对此说明如下。In the prior art, PDCCH and other channels are allocated resources in a time-division manner. However, this method has the problem of low resource utilization for sTTI, which is explained as follows.
对于LTE-TDD系统而言,其支持0.5ms长度的TTI(7个OFDM符号),而2个OFDM符号长度的PDCCH需要占用整个TTI的28.6%(2/7)的资源,再加上用于数据解调和测量的导频,TTI中用于数据传输的传输资源不到70%。For the LTE-TDD system, it supports a TTI with a length of 0.5ms (7 OFDM symbols), and a PDCCH with a length of 2 OFDM symbols needs to occupy 28.6% (2/7) of the entire TTI resources, plus Pilots for data demodulation and measurement, less than 70% of the transmission resources used for data transmission in TTI.
而对于LTE-FDD系统而言,由于其支持TTI的最短长度为2个OFDM符号,因此其资源利用率更低。For the LTE-FDD system, since the shortest length of the supported TTI is 2 OFDM symbols, its resource utilization rate is lower.
为提高资源利用率,本发明第一实施例的资源指示方法,用于网络侧设备,如图1所示,所述资源指示方法包括:In order to improve resource utilization, the resource indication method according to the first embodiment of the present invention is used for network side equipment. As shown in FIG. 1 , the resource indication method includes:
步骤101,确定一指示为下行控制信道分配的传输资源的频域特征和时域特征的资源位置指示参数;
步骤102,传输所述资源位置指示参数到移动通信终端,指示移动通信终端依据所述资源位置指示参数所指示的频域特征和时域特征确定所述传输资源。Step 102: Transmit the resource location indication parameter to the mobile communication terminal, and instruct the mobile communication terminal to determine the transmission resource according to the frequency domain characteristic and time domain characteristic indicated by the resource location indication parameter.
与现有技术不同的是,本发明第一实施例的资源指示方法中,网络侧在指示传输资源时,不再以单一的频域特征或时域特征来进行指示,而是通过资源位置指示参数同时指示传输资源的频域特征和时域特征,这就大大提高了传输资源分配的灵活性,不同的指示方式能够解决不同的问题,对此分别说明如下。Different from the prior art, in the resource indication method according to the first embodiment of the present invention, when the network side indicates transmission resources, it no longer uses a single frequency domain feature or time domain feature to indicate, but indicates by resource location. The parameters simultaneously indicate the frequency domain characteristics and time domain characteristics of the transmission resources, which greatly improves the flexibility of transmission resource allocation. Different indication methods can solve different problems, which are explained as follows.
本发明实施例的方法应用于所述传输资源采用时分复用方式分配的场景时,由于该资源位置指示参数不但能够指示传输资源位于哪几个符号,同时还能够指示传输资源在符号上的带宽,也就是说,分配的下行控制信道的资源不再在频域上占用所有的带宽,而是在频域上可以使用部分或全部的带宽。而该传输资源在频域上的分布通过资源位置指示参数来确定。When the method of the embodiment of the present invention is applied to the scenario in which the transmission resources are allocated in a time-division multiplexing manner, the resource location indication parameter can not only indicate which symbols the transmission resources are located in, but also indicate the bandwidth of the transmission resources on the symbols. , that is to say, the allocated resources of the downlink control channel no longer occupy all the bandwidth in the frequency domain, but can use part or all of the bandwidth in the frequency domain. The distribution of the transmission resources in the frequency domain is determined by the resource location indication parameter.
因此,利用本发明第一实施例的资源指示方法,可以根据需要在频域上分配满足数据传输需求的部分带宽来承载下行控制信道,而剩余的部分可以用作其他用途,提高了资源的利用率。Therefore, using the resource indication method of the first embodiment of the present invention, a part of the bandwidth that meets the data transmission requirements can be allocated in the frequency domain to bear the downlink control channel, and the remaining part can be used for other purposes, which improves the utilization of resources Rate.
在本发明具体实施例中,上述的传输资源可以是在频域上连续分布,也可以是离散分布的,而不同的形态需要设计不同的资源位置指示参数来指示频域上的分布,对此分别说明如下。In the specific embodiment of the present invention, the above-mentioned transmission resources may be continuously distributed in the frequency domain or discretely distributed, and different resource location indication parameters need to be designed to indicate the distribution in the frequency domain for different forms. They are described as follows.
<为下行控制信道分配的传输资源在频域上连续分布><The transmission resources allocated for the downlink control channel are continuously distributed in the frequency domain>
当为下行控制信道分配的传输资源在频域上连续分布时,有几种方式可以指示传输资源在频域上的分布,如:When the transmission resources allocated for the downlink control channel are continuously distributed in the frequency domain, there are several ways to indicate the distribution of transmission resources in the frequency domain, such as:
1、默认将带宽中最开始一部分或者带宽中最后一部分分配给下行控制信道,在频域上,资源位置指示参数只需要包括能够指示所述传输资源的带宽的带宽参数;1. By default, the first part of the bandwidth or the last part of the bandwidth is allocated to the downlink control channel. In the frequency domain, the resource location indication parameter only needs to include a bandwidth parameter that can indicate the bandwidth of the transmission resource;
这种方式能够简化频域参数的设计。This approach can simplify the design of frequency domain parameters.
2、在频域上,资源位置指示参数同时包括频点参数(用于确定所述传输资源在频域上的起点和/或终点)以及带宽参数;2. In the frequency domain, the resource location indication parameter includes both a frequency point parameter (used to determine the start and/or end point of the transmission resource in the frequency domain) and a bandwidth parameter;
这种方式下,能够灵活的指定带宽中的任意连续的一部分分配给下行控制信道,提高了资源分配的灵活性。In this way, any continuous part of the bandwidth can be flexibly assigned to the downlink control channel, which improves the flexibility of resource allocation.
但不管是哪种方式,在频域上,资源位置指示参数分配的比特数越多,则其能够提供更加多样化的分配方案,以下行控制信道的宽度为1个OFDM符号为例说明如下。But no matter which method is used, in the frequency domain, the more bits allocated by the resource location indication parameter, the more diversified allocation schemes can be provided.
假定默认将带宽中最开始一部分分配给下行控制信道,则当资源位置指示参数用于指示传输资源在频域上的分布的字段的比特数为2时,能够指示4种带宽占用比例,而当比特数为3时,则可以指示8种带宽占用比例。Assuming that the first part of the bandwidth is allocated to the downlink control channel by default, when the number of bits of the field used by the resource location indication parameter to indicate the distribution of transmission resources in the frequency domain is 2, it can indicate 4 kinds of bandwidth occupation ratios, and when When the number of bits is 3, 8 bandwidth occupation ratios can be indicated.
<为下行控制信道分配的传输资源在频域上离散分布><The transmission resources allocated for the downlink control channel are discretely distributed in the frequency domain>
当为下行控制信道分配的传输资源在频域上离散分布时,也有几种方式可以指示传输资源在频域上的分布,如:When the transmission resources allocated for the downlink control channel are discretely distributed in the frequency domain, there are several ways to indicate the distribution of transmission resources in the frequency domain, such as:
1、传输资源在频域上均匀分布,则在频域上,资源位置指示参数需要能够指示起点、分段数量以及分段间隔。1. The transmission resources are evenly distributed in the frequency domain. In the frequency domain, the resource location indication parameter needs to be able to indicate the starting point, the number of segments, and the segment interval.
2、传输资源在频域上不均匀分布,则在频域上,资源位置指示参数需要能够指示起点、每一个分段的带宽以及相邻分段之间的带宽间隔。2. The transmission resources are not uniformly distributed in the frequency domain. In the frequency domain, the resource location indication parameter needs to be able to indicate the starting point, the bandwidth of each segment, and the bandwidth interval between adjacent segments.
3、在频域上,资源位置指示参数直接指示每一个分段的起点和终点。3. In the frequency domain, the resource location indication parameter directly indicates the start and end points of each segment.
相对而言,为下行控制信道分配的传输资源在频域上离散分布具有更大的灵活性,但其需要更多的开销来传输资源位置指示参数,系统设计可以根据需求选择合适的传输资源分布方式。Relatively speaking, the discrete distribution of the transmission resources allocated for the downlink control channel in the frequency domain has greater flexibility, but it requires more overhead to transmit the resource location indication parameters. The system design can choose the appropriate transmission resource distribution according to the needs. Way.
在本发明具体实施例中,并不限定带宽参数的具体实现方式,如可以是所述传输资源实际占用的带宽,也可以是描述实际占用的带宽与总带宽的比值,还可以是其他的方式,如在频域上,使用带宽参数描述所述传输资源的带宽与总带宽的比值,这种方式以较小的开销实现了为下行控制信道分配的传输资源的带宽灵活配置,举例如下。In the specific embodiment of the present invention, the specific implementation mode of the bandwidth parameter is not limited. For example, it may be the bandwidth actually occupied by the transmission resources, or it may describe the ratio of the actual occupied bandwidth to the total bandwidth, or other methods may be used. For example, in the frequency domain, the bandwidth parameter is used to describe the ratio of the bandwidth of the transmission resource to the total bandwidth. This method realizes flexible configuration of the bandwidth of the transmission resource allocated for the downlink control channel with less overhead, for example as follows.
假定频域参数为2bit时,下行控制信道的宽度为1个OFDM符号,赋值00表示全带宽,赋值01表示1/2带宽,赋值10表示1/3带宽,赋值11表示1/4带宽,如下表所示。Assuming that the frequency domain parameter is 2 bits, the width of the downlink control channel is 1 OFDM symbol, the value of 00 means the full bandwidth, the value of 01 is the 1/2 bandwidth, the value of 10 is the 1/3 bandwidth, and the value of 11 is the 1/4 bandwidth, as follows shown in the table.
本发明第一实施例中,该下行控制信道在时域上可以包括一个或多个(大于或等于2个)资源单位,在此该资源单位为OFDM符号,但本发明实施例并不局限于此。In the first embodiment of the present invention, the downlink control channel may include one or more (greater than or equal to 2) resource units in the time domain, where the resource unit is an OFDM symbol, but the embodiment of the present invention is not limited to this.
为降低开销,本发明第一实施例中,当下行控制信道在时域上包括多个(大于或等于2个)资源单位时,所述带宽参数用于指示所述多个资源单位中的一个资源单位占用的带宽,而所述多个资源单位中的其他资源单位默认占用全部带宽。To reduce overhead, in the first embodiment of the present invention, when the downlink control channel includes multiple (greater than or equal to 2) resource units in the time domain, the bandwidth parameter is used to indicate one of the multiple resource units. The bandwidth occupied by the resource unit, and other resource units in the plurality of resource units occupy the entire bandwidth by default.
上述方式还需要增加一个字段来指示所述多个资源单位中的一个资源单位为哪一个资源单位,考虑到开销,本发明第一实施例中,可以在网络侧和终端侧约定,所述多个资源单位中的一个资源单位为所述多个资源单位中的最后一个。The above method also needs to add a field to indicate which resource unit one of the multiple resource units is. Considering the overhead, in the first embodiment of the present invention, it can be agreed on the network side and the terminal side that the multiple resource units are. One resource unit of the resource units is the last of the plurality of resource units.
即当带宽参数为2bit时,下行控制信道的宽度为2个OFDM符号时,赋值的含义如下表所示。That is, when the bandwidth parameter is 2 bits, and the width of the downlink control channel is 2 OFDM symbols, the meaning of the assignment is shown in the following table.
当然,也可以把下行控制信道的宽度不同的各种情况综合考虑,如设置资源位置指示参数为3bit,资源位置指示参数赋值后可以表示的含义如下:Of course, various situations with different widths of downlink control channels can also be comprehensively considered. For example, if the resource location indication parameter is set to 3 bits, the meaning of the resource location indication parameter after assignment is as follows:
000,对应于下行控制信道的宽度为1个OFDM符号的情况,且下行控制信道占用全带宽;000, corresponding to the case where the width of the downlink control channel is 1 OFDM symbol, and the downlink control channel occupies the full bandwidth;
001,对应于下行控制信道的宽度为2个OFDM符号的情况,且下行控制信道占用第一个符号的全带宽,占用第二个符号的全带宽;001, corresponding to the case where the width of the downlink control channel is 2 OFDM symbols, and the downlink control channel occupies the full bandwidth of the first symbol and the full bandwidth of the second symbol;
010,对应于下行控制信道的宽度为1个OFDM符号的情况,且下行控制信道占用1/2带宽;010, corresponding to the case where the width of the downlink control channel is 1 OFDM symbol, and the downlink control channel occupies 1/2 of the bandwidth;
011,对应于下行控制信道的宽度为2个OFDM符号的情况,且下行控制信道占用第一个符号的全带宽,占用第二个符号的1/2带宽;011, corresponding to the case where the width of the downlink control channel is 2 OFDM symbols, and the downlink control channel occupies the full bandwidth of the first symbol and 1/2 the bandwidth of the second symbol;
100,对应于下行控制信道的宽度为1个OFDM符号的情况,且下行控制信道占用1/3带宽;100, corresponding to the case where the width of the downlink control channel is 1 OFDM symbol, and the downlink control channel occupies 1/3 of the bandwidth;
001,对应于下行控制信道的宽度为2个OFDM符号的情况,且下行控制信道占用第一个符号的全带宽,占用第二个符号的1/3带宽;001, corresponding to the case where the width of the downlink control channel is 2 OFDM symbols, and the downlink control channel occupies the full bandwidth of the first symbol, and occupies 1/3 of the bandwidth of the second symbol;
110,对应于下行控制信道的宽度为1个OFDM符号的情况,且下行控制信道占用1/4带宽;110, corresponding to the case where the width of the downlink control channel is 1 OFDM symbol, and the downlink control channel occupies 1/4 of the bandwidth;
111,对应于下行控制信道的宽度为2个OFDM符号的情况,且下行控制信道占用第一个符号的全带宽,占用第二个符号的1/4带宽。111, corresponding to the case where the width of the downlink control channel is 2 OFDM symbols, and the downlink control channel occupies the full bandwidth of the first symbol and 1/4 of the bandwidth of the second symbol.
可以发现,上述的资源位置指示参数不但指示了传输资源的时域特征(如000表示选择第一个符号),还指示了传输资源的频域特征(如111能够指示占用第二个符号的1/4带宽),因此能够比现有技术实现更加灵活的分配方案。It can be found that the above-mentioned resource location indication parameter not only indicates the time domain characteristics of the transmission resources (for example, 000 indicates the selection of the first symbol), but also indicates the frequency domain characteristics of the transmission resources (for example, 111 can indicate that 1 occupies the second symbol). /4 bandwidth), thus enabling a more flexible allocation scheme than the prior art.
本发明第一实施例中,资源位置指示参数可以通过多种方式通知到移动通信终端,分别说明如下。In the first embodiment of the present invention, the resource location indication parameter can be notified to the mobile communication terminal in various ways, which are described as follows.
<通过子帧的控制信道传输><Control channel transmission via subframe>
本发明第一实施例中,如图2所示,其中子帧中包括多个TTI,则可以利用子帧中为PDCCH预留的资源中使用PDCCH的格式(图2中虚线填充的部分)来传输增加的频域参数。In the first embodiment of the present invention, as shown in FIG. 2 , where a subframe includes multiple TTIs, the PDCCH format (the part filled with dotted lines in FIG. 2 ) can be used in the resources reserved for PDCCH in the subframe to Transmit increased frequency domain parameters.
由于每子帧只能传输一次,这种方式适用于每个子帧内的所有sTTI的开销在传统的控制信道调度传输时已确定的情况,可以为同一子帧内所有的sTTI内设置开销一致的控制信道,只需要传输一份控制信道开销指示。Since each subframe can only be transmitted once, this method is suitable for the situation where the overhead of all sTTIs in each subframe has been determined in the traditional control channel scheduling transmission, and the same overhead can be set for all sTTIs in the same subframe. For the control channel, only one control channel overhead indication needs to be transmitted.
当然也可以为每个sTTI独立指示控制信道开销,这些指示比特复用在同一个DCI中。这个DCI可以在传统控制信道的CSS(Common Search Space,公共搜索空间)域传输,也可以在USS(User Search Space,用户搜索空间)域传输,通过支持sTTI传输的UE的一个共同的RNTI(Radio Network Tempory Identity,无线网络临时标识)加扰,支持sTTI传输的UE能够获取sTTI的控制信道资源。在这个DCI内复用的还可以包括当前子帧中sTTI占用的带宽位置等。Of course, the control channel overhead can also be indicated independently for each sTTI, and these indication bits are multiplexed in the same DCI. This DCI can be transmitted in the CSS (Common Search Space, common search space) domain of the traditional control channel, or in the USS (User Search Space, user search space) domain, through a common RNTI (Radio Network Tempory Identity, wireless network temporary identity) scrambling, UEs that support sTTI transmission can obtain control channel resources of sTTI. Multiplexed in this DCI may also include the bandwidth position occupied by the sTTI in the current subframe, and the like.
<通过当前传输时间间隔的控制信道传输><Transmission via the control channel of the current transmission interval>
而另一种方式中,上述的资源位置指示参数可以在每个sTTI的起始位置开始传输,如在第一个OFDM符号的频域索引的前n个RE(Resource Element,资源元素)中传输,又如在sTTI的第一个OFDM符号中分散传输(适用于每个sTTI中控制信道开销动态编号的情况)。In another way, the above-mentioned resource location indication parameter can be transmitted at the start position of each sTTI, for example, in the first n REs (Resource Element, resource element) of the frequency domain index of the first OFDM symbol. , another example is scattered transmission in the first OFDM symbol of sTTI (applicable to the case where the control channel overhead is dynamically numbered in each sTTI).
本发明第二实施例提供了一种资源确定方法,用于移动通信终端,如图3所示,所述资源确定方法包括:The second embodiment of the present invention provides a resource determination method for a mobile communication terminal. As shown in FIG. 3 , the resource determination method includes:
步骤301,从网络侧接收资源位置指示参数;Step 301, receiving a resource location indication parameter from a network side;
步骤302,依据所述资源位置指示参数所指示的为下行控制信道分配的传输资源的频域特征和时域特征确定所述传输资源。Step 302: Determine the transmission resource according to the frequency domain characteristic and time domain characteristic of the transmission resource allocated for the downlink control channel indicated by the resource location indication parameter.
网络侧在指示传输资源时,不再以单一的频域特征或时域特征来进行指示,而是通过资源位置指示参数同时指示传输资源的频域特征和时域特征,这就大大提高了传输资源分配的灵活性,不同的指示方式能够解决不同的问题,对此分别说明如下。When the network side indicates transmission resources, it no longer uses a single frequency domain feature or time domain feature to indicate, but indicates the frequency domain feature and time domain feature of the transmission resource simultaneously through the resource location indication parameter, which greatly improves the transmission efficiency. The flexibility of resource allocation and different indication methods can solve different problems, which are explained as follows.
本发明实施例的方法应用于所述传输资源采用时分复用方式分配的场景时,由于该资源位置指示参数不但能够指示传输资源位于哪几个符号,同时还能够指示传输资源在符号上的带宽,也就是说,,分配的下行控制信道的资源不再在频域上占用所有的带宽,而是在频域上可以使用部分或全部的带宽。而该传输资源在频域上的分布通过频域参数来确定。When the method of the embodiment of the present invention is applied to the scenario in which the transmission resources are allocated in a time-division multiplexing manner, the resource location indication parameter can not only indicate which symbols the transmission resources are located in, but also indicate the bandwidth of the transmission resources on the symbols. , that is to say, the allocated resources of the downlink control channel no longer occupy all the bandwidth in the frequency domain, but can use part or all of the bandwidth in the frequency domain. The distribution of the transmission resources in the frequency domain is determined by frequency domain parameters.
因此,利用本发明第一实施例的资源指示方法,可以根据需要在频域上分配满足数据传输需求的部分带宽来承载下行控制信道,而剩余的部分可以用作其他用途,提高了资源的利用率。Therefore, using the resource indication method of the first embodiment of the present invention, a part of the bandwidth that meets the data transmission requirements can be allocated in the frequency domain to bear the downlink control channel, and the remaining part can be used for other purposes, which improves the utilization of resources Rate.
所述传输资源采用时分复用方式分配时,所述资源位置指示参数至少包括一带宽参数,用于确定所述传输资源的带宽。When the transmission resource is allocated in a time-division multiplexing manner, the resource location indication parameter includes at least a bandwidth parameter, which is used to determine the bandwidth of the transmission resource.
所述资源位置指示参数还包括一频点参数,用于确定所述传输资源的在频域上的起点和/或终点。The resource location indication parameter further includes a frequency point parameter, which is used to determine the starting point and/or the ending point of the transmission resource in the frequency domain.
所述频域参数可以用于描述所述传输资源的带宽与总带宽的比值。The frequency domain parameter may be used to describe the ratio of the bandwidth of the transmission resource to the total bandwidth.
而当所述传输资源在时域上包括多个资源单位(如OFDM符号)时,所述带宽参数用于指示所述多个资源单位中的一个资源单位占用的带宽,所述多个资源单位中的其他资源单位为全带宽。When the transmission resource includes multiple resource units (such as OFDM symbols) in the time domain, the bandwidth parameter is used to indicate the bandwidth occupied by one resource unit among the multiple resource units, and the multiple resource units The other resource units in are full bandwidth.
为降低频域参数的开销,所述多个资源单位中的一个资源单位为所述多个资源单位中的最后一个。In order to reduce the overhead of the frequency domain parameter, one resource unit of the plurality of resource units is the last one of the plurality of resource units.
当然,所述传输资源也可以在频域上离散分布,其指示方式在之前已经详细描述,在此不再重复。Of course, the transmission resources may also be discretely distributed in the frequency domain, and the indication manner thereof has been described in detail before, and will not be repeated here.
所述频域参数可以通过子帧的控制信道传输,也可以通过当前传输时间间隔的控制信道传输。The frequency domain parameter may be transmitted through the control channel of the subframe, or may be transmitted through the control channel of the current transmission time interval.
本发明第三实施例还提供了一种资源指示装置,用于网络侧设备,如图4所示,所述资源指示装置包括:The third embodiment of the present invention further provides a resource indication apparatus for network side equipment. As shown in FIG. 4 , the resource indication apparatus includes:
指示参数确定模块,用于确定一指示为下行控制信道分配的传输资源的频域特征和时域特征的资源位置指示参数;an indication parameter determination module, configured to determine a resource location indication parameter indicating frequency domain characteristics and time domain characteristics of the transmission resources allocated for the downlink control channel;
指示参数传输模块,用于传输所述资源位置指示参数到移动通信终端,指示移动通信终端依据所述资源位置指示参数所指示的频域特征和时域特征确定所述传输资源。The indication parameter transmission module is configured to transmit the resource location indication parameter to the mobile communication terminal, and instruct the mobile communication terminal to determine the transmission resource according to the frequency domain characteristic and time domain characteristic indicated by the resource location indication parameter.
上述的资源指示装置,其中,所述传输资源采用时分复用方式分配时,所述资源位置指示参数至少包括一带宽参数,用于确定所述传输资源的带宽。In the above resource indication device, when the transmission resource is allocated in a time division multiplexing manner, the resource location indication parameter includes at least a bandwidth parameter, which is used to determine the bandwidth of the transmission resource.
上述的资源指示装置,其中,所述资源位置指示参数还包括一频点参数,用于确定所述传输资源在频域上的起点和/或终点。In the above resource indication device, the resource location indication parameter further includes a frequency point parameter, which is used to determine the starting point and/or the ending point of the transmission resource in the frequency domain.
上述的资源指示装置,其中,所述带宽参数用于描述所述传输资源的带宽与总带宽的比值。In the above resource indication device, the bandwidth parameter is used to describe the ratio of the bandwidth of the transmission resource to the total bandwidth.
上述的资源指示装置,其中,所述传输资源在时域上包括多个资源单位时,所述带宽参数用于指示所述多个资源单位中的一个资源单位占用的带宽,所述多个资源单位中的其他资源单位占用全部带宽。The above resource indication device, wherein, when the transmission resource includes multiple resource units in the time domain, the bandwidth parameter is used to indicate the bandwidth occupied by one resource unit in the multiple resource units, and the multiple resource units Other resource units in the unit consume the full bandwidth.
上述的资源指示装置,其中,所述多个资源单位中的一个资源单位为所述多个资源单位中的最后一个。In the above resource indication device, one resource unit of the plurality of resource units is the last one of the plurality of resource units.
上述的资源指示装置,其中,所述传输资源在频域上离散分布。In the above resource indication device, the transmission resources are discretely distributed in the frequency domain.
上述的资源指示装置,其中,所述频域参数可以通过子帧的控制信道传输,也可以通过当前传输时间间隔的控制信道传输。In the above resource indication device, the frequency domain parameter may be transmitted through the control channel of the subframe, or may be transmitted through the control channel of the current transmission time interval.
本发明第四实施例还提供了一种资源确定装置,用于移动通信终端,如图5所示,所述资源确定装置包括:The fourth embodiment of the present invention further provides a resource determination device for a mobile communication terminal. As shown in FIG. 5 , the resource determination device includes:
频域参数接收模块,用于从网络侧接收资源位置指示参数;a frequency domain parameter receiving module, used for receiving resource location indication parameters from the network side;
第一资源确定模块,用于依据所述资源位置指示参数所指示的为下行控制信道分配的传输资源的频域特征和时域特征确定所述传输资源。The first resource determination module is configured to determine the transmission resource according to the frequency domain characteristic and the time domain characteristic of the transmission resource allocated for the downlink control channel indicated by the resource location indication parameter.
上述的资源确定装置,其中,所述传输资源可以在频域上连续分布,所述资源位置指示参数至少包括一带宽参数,用于确定所述传输资源的带宽。In the above resource determination apparatus, the transmission resources may be continuously distributed in the frequency domain, and the resource location indication parameter includes at least a bandwidth parameter, which is used to determine the bandwidth of the transmission resources.
上述的资源确定装置,其中,所述频域参数还可以包括一频点参数,用于确定所述传输资源的在频域上的起点和/或终点。In the above resource determination apparatus, the frequency domain parameter may further include a frequency point parameter, which is used to determine the starting point and/or the ending point of the transmission resource in the frequency domain.
上述的资源确定装置,其中,所述带宽参数用于描述所述传输资源的带宽与总带宽的比值。In the above resource determination device, the bandwidth parameter is used to describe the ratio of the bandwidth of the transmission resource to the total bandwidth.
上述的资源确定装置,其中,所述传输资源在时域上包括多个资源单位时,所述带宽参数用于指示所述多个资源单位中的一个资源单位占用的带宽,所述多个资源单位中的其他资源单位为全带宽。The above resource determination device, wherein, when the transmission resource includes multiple resource units in the time domain, the bandwidth parameter is used to indicate the bandwidth occupied by one resource unit in the multiple resource units, and the multiple resource units The other resource units in the unit are full bandwidth.
上述的资源确定装置,其中,所述多个资源单位中的一个资源单位为所述多个资源单位中的最后一个。In the above resource determination apparatus, one resource unit of the plurality of resource units is the last one of the plurality of resource units.
上述的资源确定装置,其中,所述传输资源在频域上离散分布。In the above resource determination apparatus, the transmission resources are discretely distributed in the frequency domain.
上述的资源确定装置,其中,所述频域参数所述频域参数可以通过子帧的控制信道传输,也可以通过当前传输时间间隔的控制信道传输。In the above resource determination apparatus, the frequency domain parameter may be transmitted through the control channel of the subframe, or may be transmitted through the control channel of the current transmission time interval.
现有技术中,EPDCCH和其他信道可以通过频分的方式进行资源分配。但这种方式对于sTTI而言会存在为移动通信终端配置的资源超出sTTI的范围的问题,对此举例说明如下。In the prior art, the EPDCCH and other channels may be allocated resources in a frequency division manner. However, for the sTTI, there is a problem that the resources configured for the mobile communication terminal exceed the scope of the sTTI, which is described as an example as follows.
假定在某一时刻,sTTI的带宽为100RB,而网络侧基于100RB的带宽为EPDCCH配置的资源为第30个和第60个RB,而在下一时刻,sTTI的带宽变化为50RB,可以发现,上一时刻配置的第60个RB已经不属于sTTI,而是属于传统的PDSCH,最终导致移动通信终端通信失败。Assume that at a certain moment, the bandwidth of sTTI is 100RB, and the resources configured by the network side for EPDCCH based on the bandwidth of 100RB are the 30th and 60th RB, and at the next moment, the bandwidth of sTTI changes to 50RB, it can be found that the above The 60th RB configured at a moment no longer belongs to the sTTI, but belongs to the traditional PDSCH, which eventually causes the communication failure of the mobile communication terminal.
本发明第五实施例的资源指示方法,用于网络侧设备,如图6所示,所述资源指示方法包括:The resource indication method according to the fifth embodiment of the present invention is used for a network side device. As shown in FIG. 6 , the resource indication method includes:
步骤601,基于基准传输资源集合为下行控制信道分配原始传输资源;Step 601: Allocate original transmission resources for downlink control channels based on a reference transmission resource set;
步骤602,根据所述原始传输资源在基准传输资源集合的分布确定一第一资源分配指示;
步骤603,根据当前调度使用的实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中实际为下行控制信道分配的目标传输资源;
步骤604,传输所述第一资源分配指示到移动通信终端,由所述移动通信终端根据所述第一资源分配指示确定所述原始传输资源,并根据所述资源映射规则确定所述实际传输资源集合中的所述目标传输资源。Step 604: Transmit the first resource allocation indication to a mobile communication terminal, and the mobile communication terminal determines the original transmission resource according to the first resource allocation indication, and determines the actual transmission resource according to the resource mapping rule the target transmission resource in the set.
本发明第六实施例的资源确定方法,用于移动通信终端,如图7所示,所述资源确定方法包括:The resource determination method according to the sixth embodiment of the present invention is used for a mobile communication terminal. As shown in FIG. 7 , the resource determination method includes:
步骤701,从网络侧接收第一资源分配指示;
步骤702,根据所述第一资源分配指示确定基准传输资源集合中的原始传输资源;Step 702: Determine the original transmission resource in the reference transmission resource set according to the first resource allocation indication;
步骤703,根据所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中与所述原始传输资源对应的,由网络侧实际为下行控制信道分配的目标传输资源。Step 703: According to the resource mapping rule between the actual transmission resource set and the reference transmission resource set, determine the target actually allocated by the network side for the downlink control channel corresponding to the original transmission resource in the actual transmission resource set. transfer resources.
本发明第五实施例中,考虑到TTI的时变特性,网络侧会基于基准传输资源集合为下行控制信道分配原始传输资源,并根据实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中实际为下行控制信道分配的目标传输资源。而移动通信终端在从网络侧接收到基于基准传输资源集合的资源分配指示时,会根据所述实际传输资源集合和基准传输资源集合之间的资源映射规则,来确定实际传输资源集合中由网络侧实际为下行控制信道分配的目标传输资源。In the fifth embodiment of the present invention, considering the time-varying characteristics of TTI, the network side allocates original transmission resources for the downlink control channel based on the reference transmission resource set, and allocates the original transmission resources for the downlink control channel based on the reference transmission resource set, and allocates the original transmission resources for the downlink control channel according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set , and determine the target transmission resource actually allocated for the downlink control channel in the actual transmission resource set. When the mobile communication terminal receives the resource allocation instruction based on the reference transmission resource set from the network side, it will determine the actual transmission resource set by the network according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set. The target transmission resource actually allocated by the side for the downlink control channel.
通过上述的方法,移动通信终端能够准确定位网络侧实际为下行控制信道分配的传输资源,避免了移动通信终端通信失败的出现。Through the above method, the mobile communication terminal can accurately locate the transmission resources actually allocated by the network side for the downlink control channel, thereby avoiding the occurrence of communication failure of the mobile communication terminal.
同时,本发明第五实施例中,网络侧在资源分配指示方面可以继承原来的方法,无需改变,因此简化了网络进化过程中对网络侧的修改。Meanwhile, in the fifth embodiment of the present invention, the network side can inherit the original method in terms of resource allocation indication without changing, thus simplifying the modification of the network side in the process of network evolution.
为简化映射规则,本发明第五实施例中,为下行控制信道分配目标传输资源采用频分复用的方式分配,即所述原始传输资源和目标传输资源在时域上连续分布。In order to simplify the mapping rules, in the fifth embodiment of the present invention, the target transmission resources for downlink control channels are allocated in the manner of frequency division multiplexing, that is, the original transmission resources and the target transmission resources are continuously distributed in the time domain.
在本发明的具体实施例中,当采用频分复用方式为下行控制信道分配资源时,该映射规则需要关注如下两方面:In a specific embodiment of the present invention, when frequency division multiplexing is used to allocate resources for downlink control channels, the mapping rule needs to pay attention to the following two aspects:
1、分配的资源的数量;1. The amount of resources allocated;
2、分配的资源在实际传输资源集合中的位置。2. The position of the allocated resource in the actual transmission resource set.
上述两方面确定之后,移动通信终端即可确定所述实际传输资源集合由网络侧实际为下行控制信道分配的目标传输资源。After the above two aspects are determined, the mobile communication terminal can determine the target transmission resources actually allocated by the network side for the downlink control channel in the actual transmission resource set.
下面就上述的两方面分别描述如下。The above two aspects are described below.
在分配的资源的数量方面,应该保证目标传输资源的数量大于或等于原始传输资源的数量,以避免出现分配的资源无法满足数据传输需求。In terms of the number of allocated resources, it should be ensured that the number of target transmission resources is greater than or equal to the number of original transmission resources, so as to avoid that the allocated resources cannot meet the data transmission requirements.
为下行控制信道分配目标传输资源采用频分复用的方式分配,即所述原始传输资源和目标传输资源在时域上连续分布时,假定如图8所示,所述基准传输资源集合在时域上包括X1个时域资源单位,所述实际传输资源集合在时域上包括X2个时域资源单位,所述原始传输资源为N1个在所述X1个时域资源单位上连续的频域资源单位,所述目标传输资源为N2个在所述X2个时域资源单位上连续的频域资源单位,则原始传输资源的资源数量为:N1*X1,而目标传输资源的资源数量为:N2*X2,因此:N2大于或等于N1*X1/X2。The target transmission resources for the downlink control channel are allocated in the manner of frequency division multiplexing, that is, when the original transmission resources and the target transmission resources are continuously distributed in the time domain, it is assumed that as shown in FIG. In the domain, it includes X1 time-domain resource units, the actual transmission resource set includes X2 time-domain resource units in the time domain, and the original transmission resources are N1 consecutive frequency domain on the X1 time-domain resource units Resource unit, the target transmission resource is N2 consecutive frequency domain resource units on the X2 time domain resource units, then the resource quantity of the original transmission resource is: N1*X1, and the resource quantity of the target transmission resource is: N2*X2, therefore: N2 is greater than or equal to N1*X1/X2.
但为了避免资源的浪费,N2取大于或等于N1*X1/X2的最小正整数即可。However, in order to avoid waste of resources, N2 can be the smallest positive integer greater than or equal to N1*X1/X2.
通过上述的规则,保证了在实际传输资源集合以频分复用方式分配的目标传输资源能够满足数据传输的需求。Through the above rules, it is ensured that the target transmission resources allocated in the actual transmission resource set in the frequency division multiplexing manner can meet the requirements of data transmission.
而对于目标传输资源在实际传输资源集合中的位置,在本发明具体实施例中可以建立多种规则来设置目标传输资源在实际传输资源集合中的位置,举例说明如下。As for the position of the target transmission resource in the actual transmission resource set, in a specific embodiment of the present invention, various rules can be established to set the position of the target transmission resource in the actual transmission resource set, and examples are described as follows.
1、在频域上连续分布,在频域上配置目标传输资源在实际传输资源集合中的分配起始位置;1. Continuously distribute in the frequency domain, and configure the allocation starting position of the target transmission resource in the actual transmission resource set in the frequency domain;
2、在频域上等距离离散分布,在频域上配置目标传输资源在实际传输资源集合中的分配起始位置以及一个相邻的目标传输资源的间距;2. Distribute equidistantly and discretely in the frequency domain, and configure the allocation starting position of the target transmission resource in the actual transmission resource set and the distance between an adjacent target transmission resource in the frequency domain;
3、在频域上不等距离离散分布,在频域上配置目标传输资源在实际传输资源集合中的分配起始位置以及频域上所有相邻的目标传输资源的间距;3. Discrete distribution at unequal distances in the frequency domain, and configure the allocation starting position of the target transmission resources in the actual transmission resource set in the frequency domain and the distance between all adjacent target transmission resources in the frequency domain;
4、以频率分集增益最高的方式分布;4. Distributed in a way with the highest frequency diversity gain;
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在本发明具体实施例中,还提供一种基于基准传输资源集合中的原始传输资源的分布来确定目标传输资源在实际传输资源集合中的位置的实施方式,说明如下。In a specific embodiment of the present invention, there is also provided an implementation manner of determining the position of the target transmission resource in the actual transmission resource set based on the distribution of the original transmission resource in the reference transmission resource set, which is described as follows.
如图8所示,假定所述基准传输资源集合在频域上包括Y1个频域资源单位,所述实际传输资源集合在频域上包括Y2个频域资源单位,则在所述N2个频域资源单位和所述N1个频域资源单位中存在对应的频域资源单位对,所述频域资源单位对中属于目标传输资源的频域资源单位在所述Y2个频域资源单位中的序号为:A1*Y2/Y1的取整,A1为所述频域资源单位对属于原始传输资源的频域资源单位在所述Y1个频域资源单位中的序号。As shown in FIG. 8 , assuming that the reference transmission resource set includes Y1 frequency domain resource units in the frequency domain, and the actual transmission resource set includes Y2 frequency domain resource units in the frequency domain, then in the N2 frequency domain There is a corresponding pair of frequency domain resource units in the domain resource unit and the N1 frequency domain resource units, and the frequency domain resource unit belonging to the target transmission resource in the frequency domain resource unit pair is in the Y2 frequency domain resource units. The sequence number is: the rounding of A1*Y2/Y1, where A1 is the sequence number of the frequency-domain resource unit in the Y1 frequency-domain resource units for the frequency-domain resource unit belonging to the original transmission resource.
举例说明如下:An example is as follows:
假定X1=14,X2=7,Y1=100,Y2=50,在基准传输资源集合中分配了第5个和第90个频域资源单位作为原始传输资源,则首先可以确定N2=2*14/7=4个。Assuming that X1=14, X2=7, Y1=100, Y2=50, and the 5th and 90th frequency domain resource units are allocated as original transmission resources in the reference transmission resource set, it can be determined that N2=2*14 /7=4.
而对于位置,实际传输资源集合中第一个频域资源单位对应的位置为:(5*50/100=2.5)的取整,可以为2,也可以为3.As for the location, the location corresponding to the first frequency domain resource unit in the actual transmission resource set is: (5*50/100=2.5) rounded, which can be 2 or 3.
而另一个频域资源单位对应的位置为:(90*50/100=45)。The position corresponding to another frequency domain resource unit is: (90*50/100=45).
而另外两个频域资源单位则可以根据已经确定的频域资源单位来确定,如与已经确定的频域资源单位相邻,或者间隔分布在已经确定的频域资源单位之间等。The other two frequency domain resource units can be determined according to the already determined frequency domain resource units, such as being adjacent to the already determined frequency domain resource units, or distributed at intervals between the already determined frequency domain resource units.
其对应的映射结果如图9a所示。The corresponding mapping result is shown in Figure 9a.
而TTI在时域上变长的一种范例对应的映射结果如图9b所示,说明如下。The mapping result corresponding to an example in which the TTI becomes longer in the time domain is shown in Fig. 9b, and the description is as follows.
如实际传输资源集合中第一个频域单位的位置根据基准传输资源集合中第一个频域单位的位置确定,而由于二者在时域上的持续时间的比例关系,基准传输资源集合中第二个频域单位可以由实际传输资源集合中第一个频域单位替代。因此实际传输资源集合中第二个频域单位的位置根据基准传输资源集合中第三个频域单位的位置确定,以此类推。For example, the position of the first frequency domain unit in the actual transmission resource set is determined according to the position of the first frequency domain unit in the reference transmission resource set, and due to the proportional relationship between the two durations in the time domain, in the reference transmission resource set The second frequency domain unit may be replaced by the first frequency domain unit in the actual transmission resource set. Therefore, the position of the second frequency domain unit in the actual transmission resource set is determined according to the position of the third frequency domain unit in the reference transmission resource set, and so on.
上述的第一资源分配指示可以按照现有技术的方式进行传输,但也可以按照之前描述的那样可以通过子帧的控制信道传输,也可以通过当前传输时间间隔的控制信道传输,在此不再重复描述。The above-mentioned first resource allocation indication can be transmitted in the manner of the prior art, but can also be transmitted through the control channel of the subframe as described previously, or through the control channel of the current transmission time interval, which is not repeated here. Repeat the description.
本发明第七实施例还提供了一种资源指示装置,用于网络侧设备,如图10所示,所述资源指示装置包括:The seventh embodiment of the present invention further provides a resource indication apparatus for network side equipment. As shown in FIG. 10 , the resource indication apparatus includes:
分配模块,用于基于基准传输资源集合为下行控制信道分配原始传输资源;an allocation module, configured to allocate original transmission resources for the downlink control channel based on the reference transmission resource set;
第一指示确定模块,用于根据所述原始传输资源在基准传输资源集合的分布确定一第一资源分配指示;a first indication determination module, configured to determine a first resource allocation indication according to the distribution of the original transmission resources in the reference transmission resource set;
第一映射模块,用于据当前调度使用的所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中实际为下行控制信道分配的目标传输资源;a first mapping module, configured to determine the target transmission resource actually allocated for the downlink control channel in the actual transmission resource set according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set used in the current scheduling;
第一指示传输模块,用于传输所述第一资源分配指示到移动通信终端,由所述移动通信终端根据所述第一资源分配指示确定所述原始传输资源,并根据所述资源映射规则确定所述实际传输资源集合中的所述目标传输资源。a first indication transmission module, configured to transmit the first resource allocation indication to a mobile communication terminal, and the mobile communication terminal determines the original transmission resource according to the first resource allocation indication, and determines the original transmission resource according to the resource mapping rule the target transmission resource in the actual transmission resource set.
本发明第八实施例还提供了一种资源确定装置,用于移动通信终端,如图11所示,所述资源确定装置包括:The eighth embodiment of the present invention further provides a resource determination device for a mobile communication terminal. As shown in FIG. 11 , the resource determination device includes:
第一指示接收模块,用于从网络侧接收第一资源分配指示;a first instruction receiving module, configured to receive a first resource allocation instruction from the network side;
原始传输资源确定模块,用于根据所述第一资源分配指示确定基准传输资源集合中的原始传输资源;an original transmission resource determining module, configured to determine an original transmission resource in the reference transmission resource set according to the first resource allocation indication;
第二映射模块,用于根据所述实际传输资源集合和基准传输资源集合之间的资源映射规则,确定所述实际传输资源集合中与所述原始传输资源对应的,由网络侧实际为下行控制信道分配的目标传输资源。The second mapping module is configured to determine, according to the resource mapping rule between the actual transmission resource set and the reference transmission resource set, the actual transmission resource set in the actual transmission resource set corresponding to the original transmission resource, and the network side actually controls the downlink The target transmission resource allocated by the channel.
上述的第七和第八实施例中,所述原始传输资源和目标传输资源在时域上连续分布。In the above-mentioned seventh and eighth embodiments, the original transmission resources and the target transmission resources are continuously distributed in the time domain.
上述的第七和第八实施例中,所述基准传输资源集合在时域上包括X1个时域资源单位,所述实际传输资源集合在时域上包括X2个时域资源单位,所述原始传输资源为N1个在所述X1个时域资源单位上连续的频域资源单位,所述目标传输资源为N2个在所述X2个时域资源单位上连续的频域资源单位,N2为大于或等于N1*X1/X2的最小正整数。In the above seventh and eighth embodiments, the reference transmission resource set includes X1 time domain resource units in the time domain, the actual transmission resource set includes X2 time domain resource units in the time domain, and the original transmission resource set includes X2 time domain resource units in the time domain. The transmission resource is N1 consecutive frequency domain resource units on the X1 time domain resource units, the target transmission resource is N2 consecutive frequency domain resource units on the X2 time domain resource units, and N2 is greater than or the smallest positive integer equal to N1*X1/X2.
上述的第七和第八实施例中,所述基准传输资源集合在频域上包括Y1个频域资源单位,所述实际传输资源集合在频域上包括Y2个频域资源单位,所述N2个频域资源单位和所述N1个频域资源单位中存在对应的频域资源单位对,所述频域资源单位对中属于目标传输资源的频域资源单位在所述Y2个频域资源单位中的序号为:A1*Y2/Y1的取整,A1为所述频域资源单位对属于原始传输资源的频域资源单位在所述Y1个频域资源单位中的序号。In the above seventh and eighth embodiments, the reference transmission resource set includes Y1 frequency domain resource units in the frequency domain, the actual transmission resource set includes Y2 frequency domain resource units in the frequency domain, and the N2 frequency domain resource units. There are corresponding frequency domain resource unit pairs in the frequency domain resource units and the N1 frequency domain resource units, and the frequency domain resource unit belonging to the target transmission resource in the frequency domain resource unit pair is in the Y2 frequency domain resource units The sequence number in is: the rounding of A1*Y2/Y1, and A1 is the sequence number of the frequency-domain resource unit in the Y1 frequency-domain resource units for the frequency-domain resource unit belonging to the original transmission resource.
本发明第九实施例的资源指示方法,用于网络侧设备,如图12所示,所述资源指示方法包括:The resource indication method according to the ninth embodiment of the present invention is used for network side equipment, as shown in FIG. 12 , the resource indication method includes:
步骤1201,确定记录为下行控制信道分配的传输资源与参考资源的资源位置相对关系的位置参数;Step 1201: Determine a location parameter that records the relative relationship between the resource location of the transmission resource allocated for the downlink control channel and the reference resource;
步骤1202,传输所述位置参数到移动通信终端,指示移动通信终端根据传输资源与参考资源的资源位置相对关系确定所述传输资源。Step 1202: Transmit the location parameter to the mobile communication terminal, and instruct the mobile communication terminal to determine the transmission resource according to the resource location relative relationship between the transmission resource and the reference resource.
之前的实施例中,为下行控制信道分配的传输资源或者在时域上连续,或者在频域上连续,而在本发明的第九实施例中,根据参考信号所在的位置来确定传输资源,使得为下行控制信道分配的传输资源能够同时在时域和频域上实现更加灵活的下行控制信道分布设计。In the previous embodiment, the transmission resources allocated for the downlink control channel are either continuous in the time domain or continuous in the frequency domain, but in the ninth embodiment of the present invention, the transmission resources are determined according to the location of the reference signal, The transmission resources allocated for the downlink control channel can realize a more flexible downlink control channel distribution design in the time domain and the frequency domain at the same time.
在本发明的第九实施例中,需要确定两个因素,即可定位实际的传输资源,分别为:In the ninth embodiment of the present invention, two factors need to be determined to locate the actual transmission resources, respectively:
参考资源;reference resources;
相对于参考资源的位置。The location relative to the reference resource.
在本发明的第九实施例中,对于参考资源的选择只需要满足一个条件即可,即:终端侧依据现有流程可以先于下行控制信道获取的资源。In the ninth embodiment of the present invention, the selection of the reference resource only needs to satisfy one condition, that is, the terminal side can obtain the resource prior to the downlink control channel according to the existing procedure.
如果终端侧依据现有流程可以先于下行控制信道获取参考资源,则终端侧可以进一步依据二者之间的相对位置定位传输资源。If the terminal side can obtain the reference resource before the downlink control channel according to the existing procedure, the terminal side can further locate the transmission resource according to the relative position between the two.
在LTE网络中,网络侧通常是分配系统带宽的一部分区域给移动通信终端,即在一个特定时间给移动通信终端分配特定的传输资源。In the LTE network, the network side usually allocates a part of the system bandwidth to the mobile communication terminal, that is, allocates a specific transmission resource to the mobile communication terminal at a specific time.
为保证移动通信终端能够确定这些传输资源的位置,网络侧需要给移动通信终端发送下行参考信号,用于终端侧的相干检测和解调等。In order to ensure that the mobile communication terminal can determine the positions of these transmission resources, the network side needs to send a downlink reference signal to the mobile communication terminal for coherent detection and demodulation on the terminal side.
下行参考信号中包括CRS(小区特定的参考信号,也叫公共参考信号)以及DRS(用户参考信号),这两种下行参考信号是终端侧可以先于下行控制信道获取的。The downlink reference signal includes CRS (cell-specific reference signal, also called common reference signal) and DRS (user reference signal), which can be acquired by the terminal side before the downlink control channel.
同时,对于CRS而言,在每个下行子帧都有,特殊子帧的下行导频时隙也有。在一个资源块内,频域上每隔六个子载波有一个,时域上每隔三个符号有一个,因此在数量的优势也使得指示传输资源的方式能够多样化。At the same time, for the CRS, it exists in every downlink subframe, and also has downlink pilot frequency slots of special subframes. In a resource block, there is one every six subcarriers in the frequency domain, and one every three symbols in the time domain, so the advantage in quantity also makes the ways of indicating transmission resources diversified.
因此,在本发明具体实施例中,选择这两种信号所在的资源作为参考资源。Therefore, in the specific embodiment of the present invention, the resource where the two signals are located is selected as the reference resource.
但应当理解的是,本发明第九实施例也可以选择其他下行信号所在的资源作为参考,只要其能够先于下行控制信道获取即可,在此不作过多描述。However, it should be understood that, in the ninth embodiment of the present invention, resources where other downlink signals are located can also be selected as a reference, as long as they can be acquired before the downlink control channel, which will not be described here.
在参考资源确定之后,就需要确定传输资源相对于参考资源的位置,在此以CRS信号为例分别说明如下。After the reference resource is determined, it is necessary to determine the position of the transmission resource relative to the reference resource, which is described as follows by taking the CRS signal as an example.
图13a-图13e表示各种可能的传输资源设计示意图,其中斜线填充的RE表示CRS所在的位置,而圆点填充的RE表示传输资源所在的位置。Figures 13a-13e show schematic diagrams of various possible transmission resource designs, in which the REs filled with slashes represent the locations where the CRSs are located, and the REs filled with dots represent the locations where the transmission resources are located.
如图13a所示,传输资源相对于参考资源的位置关系为:在频域上与参考资源相邻,且位于参考资源之后;As shown in Figure 13a, the positional relationship of the transmission resource relative to the reference resource is: adjacent to the reference resource in the frequency domain, and behind the reference resource;
如图13b所示,传输资源相对于参考资源的位置关系为:在频域上与参考资源相邻,且位于参考资源之前;As shown in FIG. 13b, the positional relationship of the transmission resource relative to the reference resource is: adjacent to the reference resource in the frequency domain, and located before the reference resource;
如图13c所示,传输资源相对于参考资源的位置关系为:在时域上与参考资源相邻,且位于参考资源之前;As shown in Figure 13c, the positional relationship of the transmission resource with respect to the reference resource is: it is adjacent to the reference resource in the time domain, and is located before the reference resource;
如图13d所示,传输资源相对于参考资源的位置关系为:在时域上与参考资源相邻,且位于参考资源之后。As shown in FIG. 13d , the positional relationship of the transmission resource with respect to the reference resource is: adjacent to the reference resource in the time domain and behind the reference resource.
如图13e所示,传输资源相对于参考资源的位置关系为:在频域上与参考资源相邻;As shown in Figure 13e, the positional relationship between the transmission resource and the reference resource is: adjacent to the reference resource in the frequency domain;
以上图样中,图13a、图13b和图13e默认在时域上全时长连续分布,而图13c和图13d默认在频域上全带宽连续分布。In the above patterns, Fig. 13a, Fig. 13b and Fig. 13e are continuously distributed in the time domain for the full duration by default, while Fig. 13c and Fig. 13d are continuously distributed in the frequency domain for the full bandwidth by default.
当然,依据本发明实施例的方法,也可以在时域和频域上均离散分布,请参考图13f-图13i,其中:Of course, according to the method of the embodiment of the present invention, the distribution can also be discretely distributed in both the time domain and the frequency domain. Please refer to FIG. 13f to FIG. 13i , in which:
如图13f所示,传输资源相对于参考资源的位置关系为:在频域上与参考资源相邻,且位于参考资源之前,时域上相同;As shown in Figure 13f, the positional relationship of the transmission resource relative to the reference resource is: adjacent to the reference resource in the frequency domain, and before the reference resource, the same in the time domain;
如图13g所示,传输资源相对于参考资源的位置关系为:在频域上与参考资源相邻,时域上相同;As shown in Figure 13g, the positional relationship between the transmission resource and the reference resource is: adjacent to the reference resource in the frequency domain, and the same in the time domain;
如图13h所示,传输资源相对于参考资源的位置关系为:在时域上与参考资源相邻,且位于参考资源之后,频域上相同;As shown in Figure 13h, the positional relationship between the transmission resource and the reference resource is: adjacent to the reference resource in the time domain, and behind the reference resource, the same in the frequency domain;
如图13i所示,传输资源相对于参考资源的位置关系为:在时域或者频域上与参考资源相邻,且时域或者频域中至少一个相同。As shown in Fig. 13i, the positional relationship of the transmission resource with respect to the reference resource is: adjacent to the reference resource in the time domain or the frequency domain, and at least one of the time domain or the frequency domain is the same.
图13f-图13i中的方式中,传输资源设置为与参考信号相邻(传输资源与所述参考资源在时域和/或频域上相邻),有利于下行控制信道的准确解调。13f-13i, the transmission resource is set adjacent to the reference signal (the transmission resource and the reference resource are adjacent in the time domain and/or frequency domain), which is conducive to accurate demodulation of the downlink control channel.
结合图13a-图13i来看,本发明具体实施例中,该位置参数可以设置为一图样参数,不同的图样参数对应于不同的传输资源数量和/或不同的资源位置相对关系。网络侧只需要通知终端该图样参数的编号,终端即可根据确定传输资源相对于参考资源的位置,进而根据参考资源的位置确定传输资源的实际位置。13a-13i, in a specific embodiment of the present invention, the location parameter can be set as a pattern parameter, and different pattern parameters correspond to different numbers of transmission resources and/or different resource location relative relationships. The network side only needs to notify the terminal of the number of the pattern parameter, and the terminal can determine the actual position of the transmission resource according to the position of the reference resource by determining the position of the transmission resource relative to the reference resource.
以上图13a-图13i的图样中,都是在整个带宽或者整个时间域上统一配置,为进一步提高灵活性,本发明具体实施例中还可以进一步控制传输资源所在的区域。13a to 13i above are all uniformly configured in the entire bandwidth or the entire time domain. To further improve flexibility, the specific embodiment of the present invention may further control the region where the transmission resources are located.
这种方式下,本发明第九实施例的资源指示方法,还包括:In this manner, the resource indication method according to the ninth embodiment of the present invention further includes:
确定一第二资源分配指示;determining a second resource allocation instruction;
传输所述第二资源分配指示到移动通信终端,指示移动通信终端根据第二资源分配指示确定所述传输资源所在的区域,并在区域中根据传输资源与参考资源的资源位置相对关系确定所述传输资源。transmitting the second resource allocation indication to the mobile communication terminal, instructing the mobile communication terminal to determine the area where the transmission resource is located according to the second resource allocation indication, and to determine the resource location relative relationship between the transmission resource and the reference resource in the area transfer resources.
通过上述的方式,可以将传输资源的带宽和时间长度进行限定,如图13j所示,可以限定仅在时域的前1/X(如1/2、1/3、……)上分配传输资源。In the above manner, the bandwidth and time length of transmission resources can be limited. As shown in Fig. 13j, transmission can be limited to be allocated only on the first 1/X (eg, 1/2, 1/3, ...) of the time domain. resource.
当然,也可以在频域上进行限定,或者同时限定时域和频域的范围,在此不做进一步详细描述。Of course, the limitation may also be performed in the frequency domain, or the range of the time domain and the frequency domain may be defined simultaneously, which will not be described in further detail here.
本发明具体实施例中,所述位置参数同样也可以通过子帧的控制信道传输或者通过当前传输时间间隔的控制信道传输,在此不再重复描述。In the specific embodiment of the present invention, the location parameter can also be transmitted through the control channel of the subframe or through the control channel of the current transmission time interval, and the description is not repeated here.
本发明第十实施例的资源确定方法,用于移动通信终端,如图14所示,所述资源确定方法包括:The resource determination method according to the tenth embodiment of the present invention is used for a mobile communication terminal. As shown in FIG. 14 , the resource determination method includes:
步骤1401,从网络侧接收记录传输资源与参考资源的资源位置相对关系的位置参数;Step 1401: Receive a location parameter recording the relative relationship between the resource location of the transmission resource and the reference resource from the network side;
步骤1402,根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源。Step 1402: Determine the transmission resource according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource.
上述的资源确定方法,其中,所述参考资源为小区参考信号或用户参考信号所在的传输资源。In the above resource determination method, the reference resource is a transmission resource where a cell reference signal or a user reference signal is located.
上述的资源确定方法,其中,所述传输资源与所述参考资源在时域和/或频域上相邻。In the above resource determination method, the transmission resource and the reference resource are adjacent in time domain and/or frequency domain.
上述的资源确定方法,其中,还包括:The above resource determination method, wherein, also includes:
接收第二资源分配指示;receiving a second resource allocation indication;
根据第二资源分配指示确定所述传输资源所在的区域;determining the region where the transmission resource is located according to the second resource allocation indication;
所述根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源的步骤在确定的区域内执行。The step of determining the transmission resource according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource is performed within the determined area.
上述的资源确定方法,其中,所述位置参数通过子帧的控制信道传输或者通过当前传输时间间隔的控制信道传输。In the above resource determination method, the location parameter is transmitted through the control channel of the subframe or through the control channel of the current transmission time interval.
本发明第十一实施例的资源指示装置,用于网络侧设备,如图15所示,所述资源指示装置包括:The resource indication apparatus according to the eleventh embodiment of the present invention is used for network-side equipment. As shown in FIG. 15 , the resource indication apparatus includes:
位置参数确定模块,用于确定记录为下行控制信道分配的传输资源与参考资源的资源位置相对关系的位置参数;a location parameter determination module, configured to determine a location parameter that records the relative relationship between the resource location of the transmission resource allocated for the downlink control channel and the reference resource;
位置参数传输模块,用于传输所述位置参数到移动通信终端,指示移动通信终端根据传输资源与参考资源的资源位置相对关系确定所述传输资源。The location parameter transmission module is used for transmitting the location parameter to the mobile communication terminal, and instructing the mobile communication terminal to determine the transmission resource according to the resource position relative relationship between the transmission resource and the reference resource.
上述的资源指示装置,其中,所述参考资源为小区参考信号或用户参考信号所在的传输资源。In the above resource indication device, the reference resource is a transmission resource where a cell reference signal or a user reference signal is located.
上述的资源指示装置,其中,所述传输资源与所述参考资源在时域和/或频域上相邻。In the above resource indication apparatus, the transmission resource and the reference resource are adjacent in time domain and/or frequency domain.
上述的资源指示装置,其中,还包括:The above-mentioned resource indication device, wherein, further includes:
第二指示确定模块,用于确定一第二资源分配指示;a second indication determining module, configured to determine a second resource allocation indication;
第二指示传输模块,用于传输所述第二资源分配指示到移动通信终端,指示移动通信终端根据第二资源分配指示确定所述传输资源所在的区域,并在区域中根据传输资源与参考资源的资源位置相对关系确定所述传输资源。The second indication transmission module is used for transmitting the second resource allocation indication to the mobile communication terminal, instructing the mobile communication terminal to determine the area where the transmission resource is located according to the second resource allocation indication, and in the area according to the transmission resource and the reference resource The relative relationship between the resource positions of the transmission resources is determined.
上述的资源指示装置,其中,所述位置参数通过子帧的控制信道传输或者通过当前传输时间间隔的控制信道传输。In the above resource indication device, the location parameter is transmitted through the control channel of the subframe or through the control channel of the current transmission time interval.
本发明第十二实施例的资源确定装置,用于移动通信终端,如图16所示,所述资源确定装置包括:The resource determination apparatus according to the twelfth embodiment of the present invention is used for a mobile communication terminal. As shown in FIG. 16 , the resource determination apparatus includes:
位置参数接收模块,用于从网络侧接收记录传输资源与参考资源的资源位置相对关系的位置参数;a location parameter receiving module, configured to receive, from the network side, a location parameter that records the relative relationship between the resource location of the transmission resource and the reference resource;
第三资源确定模块,用于根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源。The third resource determination module is configured to determine the transmission resource according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource.
上述的资源确定装置,其中,所述参考资源为小区参考信号或用户参考信号所在的传输资源。In the above resource determination apparatus, the reference resource is a transmission resource where a cell reference signal or a user reference signal is located.
上述的资源确定装置,其中,所述传输资源与所述参考资源在时域和/或频域上相邻。In the above resource determination apparatus, wherein the transmission resource and the reference resource are adjacent in time domain and/or frequency domain.
上述的资源确定装置,其中,还包括:The above-mentioned resource determination device, wherein, also includes:
第二指示接收模块,用于接收第二资源分配指示;a second instruction receiving module, configured to receive a second resource allocation instruction;
区域确定模块,用于根据第二资源分配指示确定所述传输资源所在的区域;an area determination module, configured to determine the area where the transmission resource is located according to the second resource allocation indication;
所述第三资源确定模块具体用于在所述区域确定模块确定的区域内根据参考资源的实际位置以及传输资源与参考资源的资源位置相对关系确定所述传输资源。The third resource determination module is specifically configured to determine the transmission resource according to the actual location of the reference resource and the relative relationship between the resource location of the transmission resource and the reference resource within the area determined by the area determination module.
上述的资源确定装置,其中,所述位置参数通过子帧的控制信道传输或者通过当前传输时间间隔的控制信道传输。In the above resource determination apparatus, the location parameter is transmitted through the control channel of the subframe or through the control channel of the current transmission time interval.
上述实施例中,网络侧至少部分的通过显示的方式通知移动通信终端,当本发明实施例中也可以完全以隐式的方式实现资源的指示和确定。In the above-mentioned embodiment, the network side notifies the mobile communication terminal at least in part by way of display, but in the embodiment of the present invention, the indication and determination of resources can also be completely implemented in an implicit way.
本发明实施例还提供了一种资源确定方法,用于网络侧或移动通信终端,包括:The embodiment of the present invention also provides a resource determination method for the network side or a mobile communication terminal, including:
根据当前下行控制信道的实际开销,从预先定义的与开销对应的资源配置方案中选择满足要求资源配置方案;According to the actual overhead of the current downlink control channel, select a resource configuration scheme that meets the requirements from the predefined resource configuration schemes corresponding to the overhead;
根据满足要求的资源配置方案进行下行控制信道资源的分配或确认。Allocate or confirm downlink control channel resources according to the resource allocation scheme that meets the requirements.
为实现上述目的,本发明实施例还提供了一种资源确定装置,用于网络侧或移动通信终端,包括:In order to achieve the above purpose, an embodiment of the present invention further provides a resource determination device, which is used on the network side or a mobile communication terminal, including:
方案选择模块,用于根据当前下行控制信道的实际开销,从预先定义的与开销对应的资源配置方案中选择满足要求资源配置方案;a scheme selection module, configured to select a resource configuration scheme that meets the requirements from a predefined resource configuration scheme corresponding to the overhead according to the actual overhead of the current downlink control channel;
执行模块,用于根据满足要求的资源配置方案进行下行控制信道资源的分配或确认。The execution module is used for allocating or confirming downlink control channel resources according to the resource configuration scheme that meets the requirements.
这种方式下,在网络侧和终端侧共同保存如下的参数:In this way, the following parameters are saved on both the network side and the terminal side:
1、控制信道的最小构成单位(以sCCE描述);1. The smallest unit of control channel (described by sCCE);
2、以控制信道开销作为变量的资源映射规则。2. A resource mapping rule with control channel overhead as a variable.
举例说明如下。Examples are given below.
假设sTTI的带宽为50RB,对于时分复用的方案定义最小的sCCE由时域上连续的36个RE组成,并定义控制信道开销与带宽比例之间的关系,如:Assuming that the bandwidth of sTTI is 50RB, the minimum sCCE defined for the time division multiplexing scheme is composed of 36 consecutive REs in the time domain, and the relationship between the control channel overhead and the bandwidth ratio is defined, such as:
控制信道开销小于或等于A,则1/4带宽;If the control channel overhead is less than or equal to A, then 1/4 bandwidth;
控制信道开销大于或等于A+Delta,则1/3带宽;If the control channel overhead is greater than or equal to A+Delta, then 1/3 the bandwidth;
控制信道开销大于或等于A+2Delta,则1/2带宽;If the control channel overhead is greater than or equal to A+2Delta, then 1/2 the bandwidth;
控制信道开销大于或等于A+3Delta,则全带宽。The control channel overhead is greater than or equal to A+3Delta, then the full bandwidth.
假设当前控制信道开销为16CCE,则每个OS上有600个RE(假设没有CRS,有CRS的情况下,只有400个RE),此时使用1OS全带宽能满足控制信道开销。则基站和UE均确定控制信道开销为1OFDM符号并占用全带宽。Assuming that the current control channel overhead is 16CCEs, there are 600 REs on each OS (assuming there is no CRS, and only 400 REs in the case of CRSs), at this time, the control channel overhead can be met by using the full bandwidth of 1OS. Then both the base station and the UE determine that the control channel overhead is 1 OFDM symbol and occupies the full bandwidth.
又如,假设sTTI的带宽为50RB,时域长度为7个OS,根据控制信道开销确定需要的sRB数目,并将这些RB连续或均匀分散在整个sTTI带宽上,起始位置可以跟sTTI编号相关,或是由信令通知。同样是16个sCCE(假设每个sCCE由36个RE组成)的控制信道开销的情况下,每个sRB有84RE(考虑CRS,DMRS时更少),需要16*36/84=6.9,即需要7个sRB。As another example, suppose the bandwidth of sTTI is 50RB and the length of time domain is 7 OS. Determine the required number of sRBs according to the control channel overhead, and distribute these RBs continuously or evenly over the entire sTTI bandwidth. The starting position can be related to the sTTI number. , or by signaling. In the case of the control channel overhead of 16 sCCEs (assuming that each sCCE consists of 36 REs), each sRB has 84 REs (less when considering CRS, DMRS), which requires 16*36/84=6.9, that is, it needs 7 sRBs.
再如,sTTI的带宽为50RB,时域长度为1个slot,即7个OS;对于离散的时频域控制信道资源的情况下,假设取sTTI时域的1/2,根据控制信道开销按照CRS周围映射控制信道资源图样顺序选取控制信道资源。这种情况下不同图样内每个sPRB内的可用RE不同,则对于不同的开销,选择满足要求的图样即可,这些RB可以是连续或离散均匀分布在整个sTTI带宽上的。在某些情况下可能多种带宽都满足,则需要定义一定的规则,比如对这些图样同时满足时的选择排序,或是通过信令通知采用哪种图样。For another example, the bandwidth of sTTI is 50RB, and the length of time domain is 1 slot, that is, 7 OSs; for the case of discrete time-frequency domain control channel resources, it is assumed that 1/2 of the time domain of sTTI is taken, according to the control channel overhead. The control channel resources are selected sequentially by mapping control channel resource patterns around the CRS. In this case, the available REs in each sPRB in different patterns are different, and for different overheads, a pattern that meets the requirements can be selected, and these RBs can be continuously or discretely uniformly distributed over the entire sTTI bandwidth. In some cases, multiple bandwidths may be satisfied, and certain rules need to be defined, such as the selection ordering when these patterns are satisfied at the same time, or which pattern to use is notified through signaling.
本发明第十三实施例的网络侧设备,包括上述任意的资源指示装置。The network-side device according to the thirteenth embodiment of the present invention includes any of the above-mentioned resource indication apparatuses.
本发明第十四实施例的移动通信终端,包括上述任意的资源确定装置。The mobile communication terminal according to the fourteenth embodiment of the present invention includes any of the above-mentioned resource determination apparatuses.
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.
上述本发明实施例序号仅仅为了描述,不代表实施例的优劣。The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本发明各个实施例所述的方法。From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.
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| CN201610659761.7ACN107734665B (en) | 2016-08-11 | 2016-08-11 | Resource indication, determination method and device, network side device and mobile communication terminal |
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| CN201610659761.7ACN107734665B (en) | 2016-08-11 | 2016-08-11 | Resource indication, determination method and device, network side device and mobile communication terminal |
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| CN201610659761.7AActiveCN107734665B (en) | 2016-08-11 | 2016-08-11 | Resource indication, determination method and device, network side device and mobile communication terminal |
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