技术领域technical field
本发明涉及无线接口物理层的技术，尤其涉及一种搜索空间的确定方法及网元设备。The invention relates to the technology of the physical layer of the wireless interface, in particular to a method for determining a search space and network element equipment.
背景技术Background technique
物理下行控制信道(PDCCH)可用于指示用户设备(UE)所对应的物理下行共享信道(PDSCH)调度、或将要发送的物理上行共享信道(PUSCH)调度的时频资源和传输参数。要获得这些消息，UE需要首先检测到PDCCH，LTE采用了盲检测的方式让UE获取自己的PDCCH，但是，控制区域在频域上占用整个带宽，就常规子帧而言，时域上占用前3个或4个正交频分复用(OFDM)符号。如果完全的进行盲检测，会给UE带来较大的复杂度，需要更长的处理时间。搜索空间有效缩小了盲检测的范围，它定义了一些资源位置，使UE的PDCCH只可能出现在这些有限的资源位置上，从而缩小了盲检测的范围，有助于UE提高PDCCH检测效率，降低终端复杂度。The physical downlink control channel (PDCCH) can be used to indicate the physical downlink shared channel (PDSCH) scheduling corresponding to the user equipment (UE), or the time-frequency resources and transmission parameters of the physical uplink shared channel (PUSCH) scheduling to be sent. To obtain these messages, the UE needs to detect the PDCCH first. LTE uses a blind detection method to allow the UE to obtain its own PDCCH. However, the control area occupies the entire bandwidth in the frequency domain. 3 or 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols. If the blind detection is completely performed, it will bring greater complexity to the UE and require longer processing time. The search space effectively narrows the scope of blind detection. It defines some resource positions, so that the UE's PDCCH can only appear in these limited resource positions, thereby reducing the scope of blind detection, helping UE to improve PDCCH detection efficiency and reduce terminal complexity.
为子帧k的控制区域(前3个或4个OFDM符号)的所有可用于PDCCH传输的CCE进行编号，从0到NCCE,k-1，之后依据协议定义的不同聚合等级的搜搜空间进行控制信道的盲检测，聚合等级为L的搜索空间的第m个candidate定义为：其中，m＝0,…,M(L)-1，M(L)为对于给定的聚合等级为L的搜索空间包含的candidate的个数，如下表1所示。Yk是搜索空间的起始位置，对于公共搜索空间，取值为0；对于UE specific的搜索空间，为与UE ID和时隙数相关的参数。Number all the CCEs that can be used for PDCCH transmission in the control region of subframe k (the first 3 or 4 OFDM symbols), from 0 to NCCE,k -1, and then search space according to different aggregation levels defined by the protocol For blind detection of the control channel, the mth candidate of the search space whose aggregation level is L is defined as: Wherein, m=0,...,M(L) -1, M(L) is the number of candidates included in the search space for a given aggregation level L, as shown in Table 1 below. Yk is the starting position of the search space. For the common search space, the value is 0; for the UE specific search space, it is a parameter related to the UE ID and the number of time slots.
表1Table 1
在5G NR设计中，要考虑支持多种业务共存，既有增强移动宽带(eMBB)业务，对吞吐量需求要求较高，但对时延要求不高；也有超高可靠性与超低时延业务(URLLC)业务，对时延要求较高；同时也有高低频段的应用。因此在控制信道的检测流程中需要进行相应的考虑。In the design of 5G NR, it is necessary to consider supporting the coexistence of multiple services, including enhanced mobile broadband (eMBB) services, which have high requirements for throughput but not high requirements for delay; there are also ultra-high reliability and ultra-low delay Business (URLLC) business has high requirements on delay; at the same time, there are applications in high and low frequency bands. Therefore, corresponding considerations need to be taken in the detection process of the control channel.
当前控制信道的传输资源为控制信道资源集合(CORESET，control resourceset)，不同的CORESET的参数由系统配置，比如配置的时频资源不同的CORESET可以不同，控制信道在CORESET中传输等等。The transmission resource of the current control channel is a set of control channel resources (CORESET, control resourceset). The parameters of different CORESETs are configured by the system. For example, different CORESETs with different configured time-frequency resources can be different, and the control channel is transmitted in the CORESET.
采用现有技术存在的问题是：在LTE搜索空间的确定中，需要将所有控制区域的OFDM符号传输接收完成之后确定所有的CCE后，才能进行控制信道的搜索。可是，这种方式对于时延要求比较高的业务无法较好的支持，因此，包括现在的控制信道设计考虑会支持频域优先的控制信道映射，以使得能够在第一个符号上就能检测到某些候选个数(candidate)。但是，如何确定搜索空间的分配并没有具体的方案。The problem existing in the prior art is that in the determination of the LTE search space, it is necessary to determine all the CCEs after the OFDM symbol transmission and reception of all the control regions are completed, and then the control channel search can be performed. However, this method cannot well support services with relatively high delay requirements. Therefore, including the current control channel design considerations, it will support frequency-domain priority control channel mapping, so that it can be detected on the first symbol. To some candidate number (candidate). However, there is no specific solution for how to determine the allocation of the search space.
发明内容Contents of the invention
有鉴于此，本发明实施例希望提供一种搜索空间的确定方法及网元设备，至少解决了现有技术存在的问题。In view of this, the embodiments of the present invention hope to provide a method for determining a search space and a network element device, which at least solve the problems existing in the prior art.
本发明实施例的一种搜索空间的确定方法，所述方法包括：A method for determining a search space according to an embodiment of the present invention, the method includes:
根据用户搜索空间是以全部符号的策略和/或逐符号的策略配置来确定用户搜索空间的模式；Determining the mode of the user search space according to whether the user search space is configured with an all-symbol strategy and/or a symbol-by-symbol strategy;
将所述用户搜索空间的模式通知给用户设备(UE)。A user equipment (UE) is notified of the mode of the user search space.
上述方案中，将所述用户搜索空间的模式通知给UE，包括：In the above solution, notifying the UE of the mode of the user search space includes:
将所述用户搜索空间的模式以控制信道资源集合CORESET参数的形式通知给UE。The mode of the user search space is notified to the UE in the form of a control channel resource set CORESET parameter.
上述方案中，所述方法还包括：In the above scheme, the method also includes:
对所述CORESET进行配置时，配置所述CORESET支持的所述用户搜索空间的模式。When configuring the CORESET, configure the mode of the user search space supported by the CORESET.
上述方案中，将所述用户搜索空间的模式通知给UE，包括：In the above solution, notifying the UE of the mode of the user search space includes:
将所述UE支持的所述用户搜索空间的模式通知给所述UE。Notifying the UE of the user search space mode supported by the UE.
上述方案中，根据所述全部符号的策略来确定用户搜索空间的模式，包括：In the above solution, the mode of the user search space is determined according to the strategy of all symbols, including:
以所述CORESET内的多符号或者全部正交频分复用OFDM符号内的所有的控制信道单元CCE数目为参数，确定所述用户搜索空间。The user search space is determined by taking the number of all control channel elements CCEs in the multi-symbols in the CORESET or in all OFDM symbols as a parameter.
上述方案中，根据所述逐符号的策略来确定用户搜索空间的模式，包括：In the above solution, the mode of user search space is determined according to the symbol-by-symbol strategy, including:
以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间。The user search space is determined by taking the number of CCEs in each OFDM symbol in the CORESET as a parameter.
上述方案中，用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上存在偏移。In the above solution, the starting position of the user search space is offset on different OFDM symbols of the same CORESET.
上述方案中，所述方法还包括：In the above scheme, the method also includes:
将用户搜索空间的候选candidate在控制信道资源区域内的不同的OFDM符号之间进行划分；Divide the candidate candidates of the user search space among different OFDM symbols in the control channel resource region;
将用户搜索空间的划分方式通知给UE。Notify the UE of the division method of the user search space.
上述方案中，所述方法还包括：In the above scheme, the method also includes:
根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的侯选candidate在不同的OFDM符号上进行划分；In the case of determining the user search space according to the symbol-by-symbol strategy, the candidate candidates of the aggregation level of the same user are divided on different OFDM symbols;
将用户搜索空间的划分方式通知给UE。Notify the UE of the division method of the user search space.
上述方案中，将用户搜索空间的划分方式通知给UE，包括：In the above solution, the UE is notified of the division method of the user search space, including:
通过半静态的信令指示UE其搜索空间的候选candidate在不同的OFDM符号之间的划分方式。其中，划分比例属于划分方式的范畴。The method of dividing the candidate candidates of the UE's search space among different OFDM symbols is indicated through semi-static signaling. Among them, the division ratio belongs to the category of the division method.
上述方案中，将用户搜索空间的划分方式通知给UE，包括：以预设的配置规则通知给UE，在配置规则下，侯选candidate在多个OFDM符号之间的划分方式固定或者动态变化。In the above solution, notifying the UE of the division method of the user search space includes: notifying the UE with a preset configuration rule. Under the configuration rule, the division method of candidate candidates between multiple OFDM symbols is fixed or dynamically changed.
本发明实施例的一种网元设备，所述网元设备包括：A network element device according to an embodiment of the present invention, the network element device includes:
确定单元，用于根据用户搜索空间是以全部符号的策略和/或逐符号的策略配置来确定用户搜索空间的模式；A determining unit, configured to determine the mode of the user search space according to whether the user search space is configured with an all-symbol strategy and/or a symbol-by-symbol strategy;
通知单元，用于将所述用户搜索空间的模式通知给用户设备(UE)。a notification unit, configured to notify a user equipment (UE) of the mode of the user search space.
上述方案中，所述通知单元，进一步用于：In the above solution, the notification unit is further used for:
将所述用户搜索空间的模式以控制信道资源集合CORESET参数的形式通知给UE。The mode of the user search space is notified to the UE in the form of a control channel resource set CORESET parameter.
上述方案中，所述网元设备还包括：In the above solution, the network element equipment also includes:
配置单元，用于对所述CORESET进行配置时，配置所述CORESET支持的所述用户搜索空间的模式。A configuration unit, configured to configure the user search space mode supported by the CORESET when configuring the CORESET.
上述方案中，所述通知单元，进一步用于：In the above solution, the notification unit is further used for:
将所述UE支持的所述用户搜索空间的模式通知给所述UE。Notifying the UE of the user search space mode supported by the UE.
上述方案中，所述确定单元，进一步用于：In the above solution, the determining unit is further used for:
以所述CORESET内的多符号或者全部正交频分复用OFDM符号内的所有的控制信道单元CCE数目为参数，确定所述用户搜索空间。The user search space is determined by taking the number of all control channel elements CCEs in the multi-symbols in the CORESET or in all OFDM symbols as a parameter.
上述方案中，所述确定单元，进一步用于：In the above solution, the determining unit is further used for:
以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间。The user search space is determined by taking the number of CCEs in each OFDM symbol in the CORESET as a parameter.
上述方案中，所述网元设备还包括：In the above solution, the network element equipment also includes:
处理单元，用于：processing unit for:
用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上存在偏移。The starting position of the user search space is offset on different OFDM symbols of the same CORESET.
上述方案中，所述网元设备还包括：In the above solution, the network element equipment also includes:
处理单元，用于：processing unit for:
将用户搜索空间的候选candidate在控制信道资源区域内的不同的OFDM符号之间进行划分；Divide the candidate candidates of the user search space among different OFDM symbols in the control channel resource region;
将用户搜索空间的划分方式通知给UE。Notify the UE of the division method of the user search space.
上述方案中，所述网元设备还包括：In the above solution, the network element equipment also includes:
处理单元，用于：processing unit for:
根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的侯选candidate在不同的OFDM符号上进行划分；In the case of determining the user search space according to the symbol-by-symbol strategy, the candidate candidates of the aggregation level of the same user are divided on different OFDM symbols;
将用户搜索空间的划分方式通知给UE。Notify the UE of the division method of the user search space.
上述方案中，所述处理单元，进一步用于：In the above solution, the processing unit is further used for:
通过半静态的信令指示UE其搜索空间的候选candidate在不同的OFDM符号之间的划分方式。其中，划分比例属于划分方式的范畴。The method of dividing the candidate candidates of the UE's search space among different OFDM symbols is indicated through semi-static signaling. Among them, the division ratio belongs to the category of the division method.
上述方案中，所述处理单元，进一步用于：In the above solution, the processing unit is further used for:
将用户搜索空间的划分方式以预设的配置规则通知给UE，在配置规则下，侯选candidate在多个OFDM符号之间的划分方式固定或者动态变化。The division method of the user search space is notified to the UE according to the preset configuration rule, under the configuration rule, the division method of the candidate candidate among multiple OFDM symbols is fixed or dynamically changed.
本发明实施例的搜索空间的确定方法包括：根据用户搜索空间是以全部符号的策略和/或逐符号的策略配置来确定用户搜索空间的模式；将所述用户搜索空间的模式通知给UE。The method for determining the search space in the embodiment of the present invention includes: determining the mode of the user search space according to whether the user search space is configured with an all-symbol strategy and/or a symbol-by-symbol strategy; and notifying the UE of the user search space mode.
采用本发明实施例，确定了搜索空间的分配的具体方案，通过设计控制信道的搜索空间类型，能够更好的支持各种业务的控制信道检测需求，提高控制信道的检测速度，降低用户复杂度。By adopting the embodiment of the present invention, the specific scheme for the allocation of the search space is determined, and by designing the search space type of the control channel, the control channel detection requirements of various services can be better supported, the detection speed of the control channel is improved, and the user complexity is reduced. .
附图说明Description of drawings
图1为本发明实施例一方法实现流程图；Fig. 1 is a flow chart of implementing a method according to Embodiment 1 of the present invention;
图2为应用本发明实施例一搜索空间配置的示意图；FIG. 2 is a schematic diagram of a search space configuration according to an embodiment of the present invention;
图3为应用本发明实施例又一搜索空间配置的示意图。Fig. 3 is a schematic diagram of yet another search space configuration according to an embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图对技术方案的实施作进一步的详细描述。The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings.
本发明实施例的搜索空间的确定方法，如图1所示，包括：The method for determining the search space in the embodiment of the present invention, as shown in FIG. 1 , includes:
步骤101、根据用户搜索空间是以全部符号的策略和/或逐符号的策略配置来确定用户搜索空间的模式；Step 101: Determine the mode of the user search space according to whether the user search space is configured with an all-symbol strategy and/or a symbol-by-symbol strategy;
步骤102、将所述用户搜索空间的模式通知给UE。Step 102, notify the UE of the mode of the user search space.
这里，将所述用户搜索空间的模式通知给UE，包括两种情况。1)基站侧的网元设备为CORESET进行配置，之后，以CORESET参数形式通知给UE。具体的，对CORESET进行配置时，配置所述CORESET支持的所述用户搜索空间的模式。将所述用户搜索空间的模式以CORESET参数的形式通知给UE。2)基站侧的网元设备为UE进行配置后，通知给UE。具体的，配置所述UE支持的所述用户搜索空间的模式并通知给UE。Here, notifying the UE of the mode of the user search space includes two cases. 1) The network element equipment on the base station side configures the CORESET, and then notifies the UE in the form of CORESET parameters. Specifically, when configuring the CORESET, configure the mode of the user search space supported by the CORESET. Notifying the UE of the mode of the user search space in the form of a CORESET parameter. 2) The network element equipment at the base station side notifies the UE after configuring for the UE. Specifically, the mode of the user search space supported by the UE is configured and notified to the UE.
本发明实施例的搜索空间的确定方法，是基站侧的网元设备为CORESET进行配置。所述方法包括：根据全部符号的策略和/或逐符号的策略来确定用户搜索空间的模式；对CORESET进行配置时，配置所述CORESET支持的所述用户搜索空间的模式。In the method for determining the search space in the embodiment of the present invention, the network element equipment at the base station side configures the CORESET. The method includes: determining the mode of the user search space according to the strategy of all symbols and/or the strategy of each symbol; when configuring the CORESET, configuring the mode of the user search space supported by the CORESET.
采用本发明实施例，在搜索空间的确定中，确定用户搜索空间的模式有两种策略，一种策略是根据全部符号的策略确定用户搜索空间的模式；另一种策略是根据逐符号的策略来确定用户搜索空间的模式。之后，就可以根据配置的用户搜索空间的模式来进行控制信道的搜索。在配置的用户搜索空间的模式的过程中，是对CORESET进行配置，同时配置所述CORESET支持的所述用户搜索空间的模式。由于采用不同的策略，得到不同的用户搜索空间的模式，可以支持不同的业务需求，比如，eMBB业务，对吞吐量需求要求较高，但对时延要求不高，比如，URLLC业务，对时延要求较高，同时也有高低频段的应用，通过本发明实施例确定及配置的不同用户搜索空间类型，可以对这些业务需求都进行比较好的支持。通过设计控制信道的搜索空间类型，能够更好的支持各种业务的控制信道检测需求，提高控制信道的检测速度，降低用户复杂度。Using the embodiment of the present invention, in determining the search space, there are two strategies for determining the mode of the user search space, one strategy is to determine the mode of the user search space according to the strategy of all symbols; the other strategy is to determine the mode of the user search space according to the symbol-by-symbol strategy to determine the pattern of the user search space. After that, the control channel can be searched according to the configured user search space mode. In the process of configuring the mode of the user search space, the CORESET is configured, and at the same time, the mode of the user search space supported by the CORESET is configured. Due to the adoption of different strategies, different modes of user search space can be obtained, which can support different service requirements. For example, eMBB service requires high throughput but not high requirement for delay. For example, URLLC service requires time synchronization. The delay requirement is relatively high, and there are also applications in high and low frequency bands. Through the different user search space types determined and configured in the embodiment of the present invention, these service requirements can be better supported. By designing the search space type of the control channel, it can better support the control channel detection requirements of various services, improve the detection speed of the control channel, and reduce the complexity of the user.
在本发明实施例一实施方式中，根据所述全部符号的策略来确定用户搜索空间的模式，包括：以所述CORESET内的多符号或者全部OFDM符号内的所有的CCE数目为参数，确定所述用户搜索空间。In an embodiment of the present invention, determining the mode of the user search space according to the strategy of all symbols includes: using the multi-symbols in the CORESET or the number of all CCEs in all OFDM symbols as parameters to determine the Describe the user search space.
这里，针对“CCE”而言，在LTE场景中通常称为CCE，在其他场景可以称为NR-CCE，本发明实施例中并不限于该具体名称的描述。本发明实施例中的“CCE”，只用来表示控制信道单元，英文全称为control resource element，与具体控制信道包含的RE数。Here, for "CCE", it is generally called CCE in LTE scenarios, and may be called NR-CCE in other scenarios, and the embodiment of the present invention is not limited to the description of the specific name. The "CCE" in the embodiment of the present invention is only used to represent a control channel element, and its full name in English is a control resource element, which is the number of REs contained in a specific control channel.
在本发明实施例一实施方式中，根据所述逐符号的策略来确定用户搜索空间的模式，包括：以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间。In an embodiment of the present invention, determining the user search space mode according to the symbol-by-symbol strategy includes: using the number of CCEs in each OFDM symbol in the CORESET as a parameter to determine the user search space.
在本发明实施例一实施方式中，当所述CORESET为一个时，所述方法还包括：根据当前是否存在超高可靠性与超低时延业务URLLC业务，来决定配置所述用户搜索空间的模式。In an embodiment of the present invention, when there is one CORESET, the method further includes: deciding to configure the user search space according to whether there is an ultra-high reliability and ultra-low latency URLLC service currently model.
在本发明实施例一实施方式中，所述方法还包括：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，配置不同OFDM符号上用户搜索空间的起始位置不同。In an embodiment of the present invention, the method further includes: when the user search space is determined according to the symbol-by-symbol strategy, configuring different starting positions of the user search space on different OFDM symbols.
在本发明实施例一实施方式中，所述方法还包括：用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上可以不相同。也就是说，用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上可以存在一定的偏移，偏移值可以为0，偏移值可以包括正偏移和负偏移。In an embodiment of the present invention, the method further includes: the starting position of the user search space may be different on different OFDM symbols of the same CORESET. That is to say, the starting position of the user search space may have a certain offset on different OFDM symbols of the same CORESET, and the offset value may be 0, and the offset value may include positive offset and negative offset.
在本发明实施例一实施方式中，所述方法还包括：将用户搜索空间在控制信道资源区域内的不同的OFDM符号之间进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者通过预定义的规则通知给UE。In an embodiment of the present invention, the method further includes: dividing the user search space among different OFDM symbols in the control channel resource region; notifying the division method of the user search space to the UE, or notify the UE through predefined rules.
在本发明实施例一实施方式中，所述方法还包括：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的不同candidate可以在不同的OFDM符号上进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者以预设的配置规则通知给UE。In an embodiment of the present invention, the method further includes: when the user search space is determined according to the symbol-by-symbol strategy, different candidates of the aggregation level of the same user may be on different OFDM symbols Carry out division; notify the UE of the division mode of the user search space by means of an explicit instruction, or notify the UE by a preset configuration rule.
在本发明实施例一实施方式中，所述以显式指示方式通知给UE，包括：通过半静态的信令指示，为不同类型的UE分配其用户搜索空间的candidate在不同的OFDM符号之间进行分配。具体的，包括：1)对每个聚合等级的candidate，平均分配在用户的控制信道资源占用的每个OFDM符号上；和/或，2)配置非低时延用户的candidate较多的分配在用户的控制信道资源区域的非第一个OFDM符号上；和/或，3)配置低延迟用户所有的candidate位于第一个OS上。上述划分方式仅为举例说明，划分的方式不限于上述举例。In an embodiment of the present invention, the notification to the UE in the form of an explicit indication includes: through semi-static signaling indication, assigning the candidates of the user search space for different types of UEs between different OFDM symbols to allocate. Specifically, it includes: 1) For candidates of each aggregation level, evenly allocate each OFDM symbol occupied by the user's control channel resources; and/or, 2) Configure the allocation of more candidates for non-low-latency users in On the non-first OFDM symbol in the user's control channel resource area; and/or, 3) configure all candidates of the low-delay user to be located on the first OS. The above division methods are only examples for illustration, and the division methods are not limited to the above examples.
在本发明实施例一实施方式中，所述以预设的配置规则通知给UE，包括：在根据所述逐符号的策略来确定所述用户搜索空间的情况下，直接配置不同类型的UE在多个OFDM符号之间的划分方式和/或比例。In an embodiment of the present invention, the notifying the UE of the preset configuration rules includes: directly configuring different types of UEs in the case of determining the user search space according to the symbol-by-symbol strategy The division manner and/or ratio among multiple OFDM symbols.
在本发明实施例一实施方式中，所述以预设的配置规则通知给UE，包括：动态配置candidate在用户控制信道区域内的OFDM符号上的划分。具体的，1)动态的确定所有的candidate位于控制信道区域内的第n个符号上，在不同的slot中可能位于的n值不同；和/或，2)动态的在控制信道区域内的OFDM符号之间划分candidate的比例；和/或，3)动态的调整candidate在搜索空间内的位置。对于较小的聚合等级，调整其相对于最大聚合等级的相对位置。上述划分方式仅为举例说明，划分的方式不限于上述举例。In an implementation manner of an embodiment of the present invention, the notification to the UE with a preset configuration rule includes: dynamically configuring the division of the candidate on the OFDM symbols in the user control channel region. Specifically, 1) dynamically determine that all candidates are located on the nth symbol in the control channel region, and the n values that may be located in different slots are different; and/or, 2) OFDM in the control channel region dynamically The ratio of dividing candidates between symbols; and/or, 3) dynamically adjusting the positions of candidates in the search space. For smaller aggregation levels, adjust their relative position to the largest aggregation level. The above division methods are only examples for illustration, and the division methods are not limited to the above examples.
本发明实施例的一种搜索空间的确定方法，是基站侧的网元设备为UE进行配置。具体的，所述方法包括：根据全部符号的策略和/或逐符号的策略来确定用户搜索空间的模式；配置所述UE支持的所述用户搜索空间的模式。A method for determining a search space in an embodiment of the present invention is that a network element device at a base station side configures for a UE. Specifically, the method includes: determining a user search space mode according to an all-symbol policy and/or a symbol-by-symbol policy; configuring the user search space mode supported by the UE.
在本发明实施例一实施方式中，根据所述全部符号的策略来确定用户搜索空间的模式，包括：以所述CORESET内的多符号或者全部OFDM符号内的所有的CCE数目为参数，确定所述用户搜索空间的模式。In an embodiment of the present invention, determining the mode of the user search space according to the strategy of all symbols includes: using the multi-symbols in the CORESET or the number of all CCEs in all OFDM symbols as parameters to determine the Describe the schema of the user search space.
在本发明实施例一实施方式中，根据所述逐符号的策略来确定用户搜索空间的模式，包括：以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间的模式。In an embodiment of the present invention, determining the mode of the user search space according to the symbol-by-symbol strategy includes: using the number of CCEs in each OFDM symbol in the CORESET as a parameter to determine the mode of the user search space .
在本发明实施例一实施方式中，所述方法还包括：不同的所述用户搜索空间的模式，位于同一个所述CORESET内部，配置所述UE根据其对应的用户搜索空间类型进行相应的控制信道检测。In an embodiment of the present invention, the method further includes: different user search space modes are located inside the same CORESET, and configuring the UE to perform corresponding control according to its corresponding user search space type channel detection.
在本发明实施例一实施方式中，当所述CORESET为一个时，所述方法还包括：根据当前是否存在超高可靠性与超低时延业务URLLC业务，来决定配置所述用户搜索空间的模式。In an embodiment of the present invention, when there is one CORESET, the method further includes: deciding to configure the user search space according to whether there is an ultra-high reliability and ultra-low latency URLLC service currently model.
在本发明实施例一实施方式中，所述方法还包括：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，配置不同OFDM符号上用户搜索空间的起始位置不同。In an embodiment of the present invention, the method further includes: when the user search space is determined according to the symbol-by-symbol strategy, configuring different starting positions of the user search space on different OFDM symbols.
在本发明实施例一实施方式中，所述方法还包括：用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上为可以不相同。也就是说，用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上可以存在一定的偏移，偏移值可以为0，偏移值可以包括正偏移和负偏移。In an embodiment of the present invention, the method further includes: the starting position of the user search space may be different on different OFDM symbols of the same CORESET. That is to say, the starting position of the user search space may have a certain offset on different OFDM symbols of the same CORESET, and the offset value may be 0, and the offset value may include positive offset and negative offset.
在本发明实施例一实施方式中，所述方法还包括：将用户搜索空间在控制信道资源区域内的不同的OFDM符号之间进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者通过预定义的规则通知给UE。In an embodiment of the present invention, the method further includes: dividing the user search space among different OFDM symbols in the control channel resource region; notifying the division method of the user search space to the UE, or notify the UE through predefined rules.
在本发明实施例一实施方式中，所述方法还包括：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的不同侯选个数candidate可以在不同的OFDM符号上进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者以预设的配置规则通知给UE。In an embodiment of the present invention, the method further includes: when the user search space is determined according to the symbol-by-symbol strategy, the number of candidates of different aggregation levels of the same user can be in different Divide on the OFDM symbols; notify the UE of the division mode of the user search space by an explicit indication, or notify the UE by a preset configuration rule.
在本发明实施例一实施方式中，所述以显式指示方式通知给UE，包括：通过半静态的信令指示，为不同类型的UE分配其用户搜索空间的candidate在不同的OFDM符号之间进行分配。具体的，包括：1)对每个聚合等级的candidate，平均分配在用户的控制信道资源占用的每个OFDM符号上；和/或，2)配置非低时延用户的candidate较多的分配在用户的控制信道资源区域的非第一个OFDM符号上；和/或，3)配置低延迟用户所有的candidate位于第一个OS上。In an embodiment of the present invention, the notification to the UE in the form of an explicit indication includes: through semi-static signaling indication, assigning the candidates of the user search space for different types of UEs between different OFDM symbols to allocate. Specifically, it includes: 1) For candidates of each aggregation level, evenly allocate each OFDM symbol occupied by the user's control channel resources; and/or, 2) Configure the allocation of more candidates for non-low-latency users in On the non-first OFDM symbol in the user's control channel resource area; and/or, 3) configure all candidates of the low-delay user to be located on the first OS.
在本发明实施例一实施方式中，所述以预设的配置规则通知给UE，包括：在根据所述逐符号的策略来确定所述用户搜索空间的情况下，直接配置不同类型的UE在多个OFDM符号之间的划分方式和/或比例。In an embodiment of the present invention, the notifying the UE of the preset configuration rules includes: directly configuring different types of UEs in the case of determining the user search space according to the symbol-by-symbol strategy The division manner and/or ratio among multiple OFDM symbols.
在本发明实施例一实施方式中，所述以预设的配置规则通知给UE，包括：动态配置candidate在用户控制信道区域内的OFDM符号上的划分。具体的，1)动态的确定所有的candidate位于控制信道区域内的第n个符号上，在不同的slot中可能位于的n值不同；和/或，2)动态的在控制信道区域内的OFDM符号之间划分candidate的比例；和/或，3)动态的调整candidate在搜索空间内的位置。对于较小的聚合等级，调整其相对于最大聚合等级的相对位置。In an implementation manner of an embodiment of the present invention, the notification to the UE with a preset configuration rule includes: dynamically configuring the division of the candidate on the OFDM symbols in the user control channel region. Specifically, 1) dynamically determine that all candidates are located on the nth symbol in the control channel region, and the n values that may be located in different slots are different; and/or, 2) OFDM in the control channel region dynamically The ratio of dividing candidates between symbols; and/or, 3) dynamically adjusting the positions of candidates in the search space. For smaller aggregation levels, adjust their relative position to the largest aggregation level.
本发明实施例的一种网元设备，所述网元设备包括：确定单元，用于根据用户搜索空间是以全部符号的策略和/或逐符号的策略配置来确定用户搜索空间的模式；通知单元，用于将所述用户搜索空间的模式通知给用户设备(UE)。通知单元有2种具体实现：1)通知单元，进一步用于：对CORESET进行配置时，同时配置所述CORESET支持的所述用户搜索空间的模式；将所述用户搜索空间的模式以CORESET参数的形式通知给UE；2)通知单元，进一步用于：配置所述UE支持的所述用户搜索空间的模式，并通知给UE。A network element device according to an embodiment of the present invention, the network element device includes: a determining unit, configured to determine the mode of the user search space according to whether the user search space is configured with an all-symbol strategy and/or a symbol-by-symbol strategy; notify A unit, configured to notify a user equipment (UE) of the mode of the user search space. The notification unit has two specific implementations: 1) the notification unit is further used for: when configuring the CORESET, configure the mode of the user search space supported by the CORESET at the same time; 2) a notification unit, further configured to: configure the user search space mode supported by the UE, and notify the UE.
本发明实施例的一种网元设备，为CORESET配置用户搜索空间的情况下，所述网元设备包括：确定单元，用于根据全部符号的策略和/或逐符号的策略来确定用户搜索空间的模式；配置单元，用于对控制信道资源集合CORESET进行配置时，配置所述CORESET支持的所述用户搜索空间的模式。In a network element device according to an embodiment of the present invention, when a user search space is configured for CORESET, the network element device includes: a determination unit configured to determine the user search space according to a strategy for all symbols and/or a strategy for each symbol mode; a configuration unit configured to configure a mode of the user search space supported by the CORESET when configuring the control channel resource set CORESET.
在本发明实施例一实施方式中，所述确定单元，进一步用于：以所述CORESET内的多符号或者全部正交频分复用OFDM符号内的所有的控制信道单元CCE数目为参数，确定所述用户搜索空间。In an embodiment of the present invention, the determining unit is further configured to: use the multi-symbols in the CORESET or the number of all control channel elements CCEs in all OFDM symbols in the CORESET as parameters to determine The user search space.
在本发明实施例一实施方式中，所述确定单元，进一步用于：以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间。In an embodiment of the present invention, the determining unit is further configured to: determine the user search space by using the number of CCEs in each OFDM symbol in the CORESET as a parameter.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：当所述CORESET为一个时，根据当前是否存在超高可靠性与超低时延业务URLLC业务，来决定配置所述用户搜索空间的模式。In an embodiment of the present invention, the network element device further includes: a processing unit, configured to: when there is one CORESET, according to whether there is currently an ultra-high reliability and ultra-low latency service URLLC service, A mode in which to configure the user search space is determined.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，配置不同OFDM符号上用户搜索空间的起始位置不同。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit configured to: when the user search space is determined according to the symbol-by-symbol strategy, configure user search space on different OFDM symbols The starting position of the space is different.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上可以不相同。也就是说，用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上可以存在一定的偏移，偏移值可以为0，偏移值可以包括正偏移和负偏移。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit, used for starting positions of user search spaces, which may be different on different OFDM symbols of the same CORESET. That is to say, the starting position of the user search space may have a certain offset on different OFDM symbols of the same CORESET, and the offset value may be 0, and the offset value may include positive offset and negative offset.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于将用户搜索空间在控制信道资源区域内的不同的OFDM符号之间进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者通过预定义的规则通知给UE。In an embodiment of the present invention, the network element device further includes: a processing unit, configured to divide the user search space among different OFDM symbols in the control channel resource region; divide the user search space into The UE is notified by an explicit instruction, or notified to the UE through a predefined rule.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的不同侯选个数candidate可以在不同的OFDM符号上进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者以预设的配置规则通知给UE。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit, configured to: when the user search space is determined according to the symbol-by-symbol strategy, different aggregation levels of the same user The number of candidates can be divided on different OFDM symbols; the division mode of the user search space is notified to the UE by an explicit indication, or notified to the UE by a preset configuration rule.
在本发明实施例一实施方式中，所述处理单元，进一步用于：通过半静态的信令指示，为不同类型的UE分配其用户搜索空间的candidate在不同的OFDM符号之间进行分配。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: allocate the candidates of user search spaces for different types of UEs among different OFDM symbols through semi-static signaling instructions.
在本发明实施例一实施方式中，所述处理单元，进一步用于：在根据所述逐符号的策略来确定所述用户搜索空间的情况下，直接配置不同类型的UE在多个OFDM符号之间的划分方式和/或比例。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: directly configure different types of UEs between multiple OFDM symbols in the case of determining the user search space according to the symbol-by-symbol strategy How and/or proportions are divided between.
在本发明实施例一实施方式中，所述处理单元，进一步用于：动态配置candidate在用户控制信道区域内的OFDM符号上的划分。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: dynamically configure the division of the candidate on the OFDM symbols in the user control channel region.
本发明实施例的一种网元设备，为UE配置用户搜索空间的情况下，所述网元设备包括：确定单元，用于根据全部符号的策略和/或逐符号的策略来确定用户搜索空间的模式；配置单元，用于配置所述UE支持的所述用户搜索空间的模式。In a network element device according to an embodiment of the present invention, when a user search space is configured for a UE, the network element device includes: a determination unit configured to determine the user search space according to a strategy for all symbols and/or a strategy for each symbol mode; a configuration unit configured to configure a mode of the user search space supported by the UE.
在本发明实施例一实施方式中，所述确定单元，进一步用于：以所述CORESET内的多符号或者全部正交频分复用OFDM符号内的所有的控制信道单元CCE数目为参数，确定所述用户搜索空间的模式。In an embodiment of the present invention, the determining unit is further configured to: use the multi-symbols in the CORESET or the number of all control channel elements CCEs in all OFDM symbols in the CORESET as parameters to determine The schema of the user search space.
在本发明实施例一实施方式中，所述确定单元，进一步用于：以所述CORESET内逐个OFDM符号内的CCE数目为参数，确定所述用户搜索空间的模式。In an embodiment of the present invention, the determining unit is further configured to: use the number of CCEs in each OFDM symbol in the CORESET as a parameter to determine the mode of the user search space.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：不同的所述用户搜索空间的模式，位于同一个所述CORESET内部，配置所述UE根据其对应的用户搜索空间类型进行相应的控制信道检测。In an embodiment of the present invention, the network element device further includes: a processing unit configured to: different modes of the user search space are located inside the same CORESET, and configure the UE according to its corresponding The user search space type performs corresponding control channel detection.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：根据当前是否存在超高可靠性与超低时延业务URLLC业务，来决定配置所述用户搜索空间的模式。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit, configured to: determine whether to configure the user search space according to whether there is an ultra-high reliability and ultra-low-latency URLLC service currently model.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，配置不同OFDM符号上用户搜索空间的起始位置不同。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit configured to: when the user search space is determined according to the symbol-by-symbol strategy, configure user search space on different OFDM symbols The starting position of the space is different.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：用户搜索空间的起始位置，在同一个CORESET的不同OFDM符号上为不同。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit, configured to: start positions of the user search space are different on different OFDM symbols of the same CORESET.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：将用户搜索空间在控制信道资源区域内的不同的OFDM符号之间进行划分；In an embodiment of the present invention, the network element device further includes: a processing unit configured to: divide the user search space between different OFDM symbols in the control channel resource area;
将用户搜索空间的划分方式以显式指示方式通知给UE，或者通过预定义的规则通知给UE。Notify the UE of the division method of the user search space by means of an explicit instruction, or notify the UE through a predefined rule.
在本发明实施例一实施方式中，所述网元设备还包括：处理单元，用于：当根据所述逐符号的策略来确定所述用户搜索空间的情况下，同一用户的聚合等级的不同侯选个数candidate可以在不同的OFDM符号上进行划分；将用户搜索空间的划分方式以显式指示方式通知给UE，或者以预设的配置规则通知给UE。In an implementation manner of an embodiment of the present invention, the network element device further includes: a processing unit, configured to: when the user search space is determined according to the symbol-by-symbol strategy, different aggregation levels of the same user The number of candidates can be divided on different OFDM symbols; the division mode of the user search space is notified to the UE by an explicit indication, or notified to the UE by a preset configuration rule.
在本发明实施例一实施方式中，所述处理单元，进一步用于：通过半静态的信令指示，为不同类型的UE分配其用户搜索空间的candidate在不同的OFDM符号之间进行分配。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: allocate the candidates of user search spaces for different types of UEs among different OFDM symbols through semi-static signaling instructions.
在本发明实施例一实施方式中，所述处理单元，进一步用于：在根据所述逐符号的策略来确定所述用户搜索空间的情况下，直接配置不同类型的UE在多个OFDM符号之间的划分方式和/或比例。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: directly configure different types of UEs between multiple OFDM symbols in the case of determining the user search space according to the symbol-by-symbol strategy How and/or proportions are divided between.
在本发明实施例一实施方式中，所述处理单元，进一步用于：动态配置candidate在用户控制信道区域内的OFDM符号上的划分。In an implementation manner of an embodiment of the present invention, the processing unit is further configured to: dynamically configure the division of the candidate on the OFDM symbols in the user control channel region.
以一个现实应用场景为例对本发明实施例阐述如下：Taking a real application scenario as an example, the embodiment of the present invention is described as follows:
在进行CORESET配置时，同时配置CORESET支持的搜索空间类型，类型可以包括如下：When configuring CORESET, configure the search space type supported by CORESET at the same time. The types can include the following:
●搜索空间的确定是基于CORESET内的多符号或者全部OFDM符号内的所有的CCE数目为参数确定的；The determination of the search space is determined based on the multi-symbols in the CORESET or the number of all CCEs in all OFDM symbols as parameters;
●搜索空间的确定是基于CORESET内逐个符号内的CCE数目为参数进行确定的；The determination of the search space is determined based on the number of CCEs in each symbol in the CORESET as a parameter;
例如现有LTE的控制信道搜索空间是基于控制区域(前3个或4个OFDM符号)的所有可用于PDCCH传输的CCE进行编号，从0到NCCE,k-1，继而基于NCCE,k确定搜索空间。如果逐符号确定搜索空间，则是基于每个符号中包含的CCE的个数确定搜索空间。For example, the control channel search space of existing LTE is based on all CCEs available for PDCCH transmission in the control region (the first 3 or 4 OFDM symbols) for numbering, from 0 to NCCE,k -1, and then based on NCCE,k Determine the search space. If the search space is determined symbol by symbol, the search space is determined based on the number of CCEs included in each symbol.
这样当不同业务需求的UE的控制信道在不同的control resource set中传输时，对于传输URLLC业务的控制信道的CORESET可以配置其搜索空间是逐符号进行确定的，对于传输eMBB业务的控制信道的CORESET可以配置其搜索空间是基于全CORESET时，部符号作为整体确定搜索空间的。In this way, when the control channels of UEs with different service requirements are transmitted in different control resource sets, the CORESET for the control channel that transmits the URLLC service can be configured to determine its search space symbol by symbol, and the CORESET for the control channel that transmits the eMBB service When it is possible to configure its search space to be based on the full CORESET, the part symbol determines the search space as a whole.
当只有一个CORESET时，可以根据当前是否存在URLLC业务决定配置其类型。When there is only one CORESET, its type can be configured according to whether URLLC services currently exist.
前面所述是为CORESET配置搜索空间参数，另一种实现方式也可以是逐UE配置不同的搜索空间类型，如前面所述的两种类型，这种情况下不同的搜索空间类型可能位于同一个CORESET内部，UE根据其对应的搜索空间类型进行相应的控制信道检测。The above is to configure search space parameters for CORESET. Another implementation method can also be to configure different search space types on a UE-by-UE basis, such as the two types mentioned above. In this case, different search space types may be located in the same Inside CORESET, UE performs corresponding control channel detection according to its corresponding search space type.
不论对于基于CORESET还是UE配置搜索空间的方式，当逐符号确定搜索空间时，可以配置不同符号上用户搜索空间的起始位置不同，类似于不同的OFDM符号对应不同的Yk。例如可以引入OFDM符号的索引参数(比如在时隙内的索引，或者在控制信道区域内的索引)，其他的参数比如当前时隙的编号，控制信道资源集合的编号，用户ID等；这样能够达到的效果是在同一个控制信道区域的不同OFDM符号上，控制信道搜索空间的起始位置是不同的，降低用户在所有的OFDM符号上搜索空间起始位置均相同的概率，好处是，能够进一步降低UE控制信道相互阻塞的概率。Regardless of the way of configuring the search space based on CORESET or UE, when the search space is determined symbol by symbol, different starting positions of the user search space can be configured on different symbols, similar to that different OFDM symbols correspond to different Yk . For example, the index parameter (such as the index in the time slot, or the index in the control channel area) of the OFDM symbol can be introduced, and other parameters such as the number of the current time slot, the number of the control channel resource set, the user ID, etc.; The effect achieved is that the starting position of the control channel search space is different on different OFDM symbols in the same control channel area, which reduces the probability that the user has the same starting position of the search space on all OFDM symbols. The advantage is that it can The probability of mutual blocking of UE control channels is further reduced.
举例来说，可以为不同的符号引入一个搜索空间起始位置偏置，For example, a search space starting position offset can be introduced for different symbols,
NCCEperOS,k是CORESET内部每个OFDM符号上的NR-CCE个数，nOS,k是CORESET内部OFDM符号的索引，编号可以是0～(Nset-1).Nset是CORESET内的OFDM符号个数。nRNTI是用户的RNTI值，L是聚合等级，i取值为0～L-1，具体定义可见3GPP TS36.213第9章关于PDCCH的流程部分。NCCEperOS, k is the number of NR-CCEs on each OFDM symbol in CORESET, nOS, k is the index of OFDM symbols in CORESET, and the number can be 0~(Nset -1). Nset is OFDM in CORESET number of symbols. nRNTI is the RNTI value of the user, L is the aggregation level, and the value of i is 0 to L-1. For specific definitions, see the PDCCH process part in Chapter 9 of 3GPP TS36.213.
当逐符号确定搜索空间时，同一用户的聚合等级的不同candidate可以在不同的符号上进行划分，搜索空间的划分方式可以显式的通知给UE或者通过预定义的规则告知UE；When the search space is determined symbol by symbol, different candidates of the same user’s aggregation level can be divided on different symbols, and the division method of the search space can be explicitly notified to the UE or notified to the UE through predefined rules;
显式指示的方法可以是，通过半静态的信令指示，如RRC信令，为不同类型的UE分配其搜索空间的candidate在不同的符号之间的分配；The method of explicit indication may be, through semi-static signaling indication, such as RRC signaling, the allocation of candidates of their search spaces for different types of UEs among different symbols;
·如对每个聚合等级的candidate，平均分配在用户的控制信道资源占用的每个OFDM符号上。如图2所示为平均划分的示意图，图2中，假设聚合等级1，2，4，8的candidate数目分别为6，6，2，2，与LTE相同，则在两个符号上平均划分candidate。·For example, for candidates of each aggregation level, it is evenly allocated to each OFDM symbol occupied by the user's control channel resources. Figure 2 is a schematic diagram of the average division. In Figure 2, assuming that the number of candidates for aggregation levels 1, 2, 4, and 8 are 6, 6, 2, and 2, respectively, which is the same as LTE, it is equally divided on two symbols candidate.
·如配置非低时延用户的candidate较多的分配在用户的控制信道资源区域的非第一个OFDM符号上，以留出更多的第一个符号上的搜索空间给低延时用户；·For example, more candidates of non-low-latency users are allocated to non-first OFDM symbols in the user's control channel resource area, so as to reserve more search space on the first symbol for low-latency users;
·如对于低延迟用户，配置其所有的candidate位于第一个OS上；· For low-latency users, configure all their candidates to be located on the first OS;
通过预定义的规则可以直接定义在逐符号确定搜索空间的情况下，不同类型的终端在多个符号之间的划分方式及比例等。In the case of determining the search space symbol by symbol, the division method and ratio of different types of terminals among multiple symbols can be directly defined through the predefined rules.
也可以通过一定的规则动态的确定candidate在用户控制信道区域内的OFDM符号上的划分；以RNTI和slot为函数确定在OFDM符号上的划分，能够实现如下的划分结果：It is also possible to dynamically determine the division of the candidate on the OFDM symbols in the user control channel area through certain rules; the division on the OFDM symbols is determined by using RNTI and slot as a function, and the following division results can be achieved:
·动态的确定所有的candidate位于控制信道区域内的第n个符号上；在不同的slot中可能位于的n值不同Dynamically determine that all candidates are located on the nth symbol in the control channel area; the n values that may be located in different slots are different
·动态的在控制信道区域内的OFDM符号之间划分candidate的比例：Dynamically divide the candidate ratio between OFDM symbols in the control channel area:
如UE的控制信道区域包含两个OFDM符号，在时隙n中是第一个符号中传输所有candidate的1/3，第二个符号上传输所有candidate的2/3；时隙n+1中是第一个符号中传输所有candidate的2/3，第二个符号上传输所有candidate的1/3；For example, the control channel area of the UE contains two OFDM symbols. In slot n, 1/3 of all candidates are transmitted in the first symbol, and 2/3 of all candidates are transmitted in the second symbol; in slot n+1 It is 2/3 of all candidates transmitted in the first symbol, and 1/3 of all candidates transmitted on the second symbol;
如在时隙n中是第一个符号中传输所有candidate的1/3；时隙n+1中是第一个符号中传输所有candidate的1/2；For example, in slot n, 1/3 of all candidates are transmitted in the first symbol; in slot n+1, 1/2 of all candidates are transmitted in the first symbol;
·动态的调整Candidate在搜索空间内的位置；· Dynamically adjust the position of Candidate in the search space;
对于较小的聚合等级，调整其相对于最大聚合等级的相对位置；比如两个符号的candidate位置均从最大聚合等级搜索空间起始位置开始排列，如图3左侧所示；或者两个符号的candidate位置均相比于最大聚合等级搜索空间有一定的offset，如图3右侧所示。For a smaller aggregation level, adjust its relative position relative to the maximum aggregation level; for example, the candidate positions of the two symbols are arranged from the starting position of the search space of the maximum aggregation level, as shown on the left side of Figure 3; or two symbols The candidate positions of all have a certain offset compared to the maximum aggregation level search space, as shown on the right side of Figure 3.
这样能够实现的好处是，当均位于第一个OFDM符号上时，支持低延迟。当用户在不同的OFDM符号上均有candidate分布时，用户接受到第一个OFDM符号就可以进行控制信道盲检，如果检测到了控制信道，则可以不进行后续符号上的控制信道的检测，降低控制信道检测的功耗和时延。The benefit that this can achieve is that it supports low latency when both are on the first OFDM symbol. When the user has candidate distributions on different OFDM symbols, the user can perform blind detection of the control channel after receiving the first OFDM symbol. If the control channel is detected, the detection of the control channel on the subsequent symbols may not be performed, reducing the Power consumption and latency of control channel detection.
另外，进行UE specific的candidate划分也能够一定程度上降低用户搜索空间起始位置相同时的阻塞。In addition, performing UE-specific candidate division can also reduce to a certain extent the congestion when the starting positions of user search spaces are the same.
本发明实施例所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例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中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。If the integrated modules described in the embodiments of the present invention are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present invention can be embodied in the form of software products in essence or the part that contributes to the prior art. The computer software products are stored in a storage medium and include several instructions for Make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. . Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
相应的，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序用于执行本发明实施例的搜索空间的确定方法。Correspondingly, an embodiment of the present invention further provides a computer storage medium, in which a computer program is stored, and the computer program is used to execute the method for determining a search space in the embodiment of the present invention.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.
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