Disclosure of Invention
The invention provides a method and a device for processing uplink and downlink resource configuration information, which are used for at least solving the problems of long period, large delay and inconsistent signaling execution between a terminal and a base station when high-level signaling is adopted for realizing under the condition of dynamically adjusting uplink and downlink configuration in the related technology, and the problems of large physical layer control signaling overhead and high equipment realization complexity when physical layer signaling is adopted for realizing.
According to an aspect of the present invention, a method for processing uplink and downlink resource configuration information is provided, including: and the base station sends the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe.
Preferably, the flexible subframe is at least one of: subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in a radio frame.
Preferably, the uplink and downlink resource configuration information is at least one of the following: uplink and downlink configuration information indicating the transmission direction of each subframe in a wireless frame; a transmission direction of the flexible subframe.
Preferably, the uplink and downlink resource configuration information indicates a transmission direction of each subframe in a radio frame, and includes at least one of the following: the uplink and downlink resource configuration information of a wireless frame where the uplink and downlink resource configuration information is located; the uplink and downlink resource configuration information of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of the uplink and downlink resource configuration information as a flexible subframe comprises at least one of the following: the transmission direction of a flexible subframe of a wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of a flexible subframe of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; and the transmission direction of one or more flexible subframes behind the flexible subframe where the uplink and downlink resource configuration information is located.
Preferably, when the subframes with subframe numbers of 3, 4, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes is at least one of the following combinations: UUUU, UUD, UUDD, UDDD, DDDD, UDUDUDUD, DDUU, DDUDUD and UDUU, wherein U is an uplink and D is a downlink; or, when the subframes with subframe numbers of 3, 4, 7, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes is at least one of the following combinations: UUUUU, UUUUD, UUDD, UUDDDD, UDUUU, UDUUDD, UDDDD, DDUU, DDUUDD, DDUDD and DDDDD, wherein U is an uplink and D is a downlink.
Preferably, the base station sends the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe by at least one of the following methods: transmitting the uplink and downlink resource configuration information in a mode of reusing uplink scheduling signaling on a flexible subframe; transmitting the uplink and downlink resource configuration information in a mode of reusing downlink scheduling signaling on a flexible subframe; transmitting the uplink and downlink resource configuration information in a mode of reusing an uplink power control signaling on a flexible subframe; and sending the uplink and downlink resource configuration information in a mode of reusing a feedback signaling of uplink data transmission on the flexible subframe.
Preferably, the uplink scheduling signaling is at least one of the following: downlink control messages DCI format0, DCI format 4; the downlink scheduling signaling is at least one of the following: DCI format1, DCI format1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 2D; the uplink power control signaling is at least one of the following: DCI format3, DCI format 3A; and the feedback signaling for uplink data transmission is signaling sent on a physical hybrid automatic repeat request indicator channel PHICH.
Preferably, the reused uplink scheduling signaling is a signaling for sending the uplink and downlink resource configuration information, and the signaling and the uplink scheduling signaling use the same source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the reused downlink scheduling signaling is a signaling used for sending the uplink and downlink resource configuration information, and the signaling and the downlink scheduling signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the reused uplink power control signaling is a signaling for sending the uplink and downlink resource configuration information, and the signaling and the uplink power control signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the feedback signaling for reusing the uplink data transmission indicates the uplink and downlink resource configuration information by using one or more PHICH channel resources.
According to another aspect of the present invention, a method for processing uplink and downlink resource configuration information is provided, including: and the terminal receives the uplink and downlink resource configuration information on the downlink control signaling of the flexible subframe.
Preferably, the flexible subframe is at least one of: subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in a radio frame.
Preferably, the uplink and downlink resource configuration information is at least one of the following: uplink and downlink configuration information indicating the transmission direction of each subframe in a wireless frame; a transmission direction of the flexible subframe.
Preferably, the uplink and downlink resource configuration information indicates a transmission direction of each subframe in a radio frame, and includes at least one of the following: the uplink and downlink resource configuration information of a wireless frame where the uplink and downlink resource configuration information is located; the uplink and downlink resource configuration information of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of the uplink and downlink resource configuration information as a flexible subframe comprises at least one of the following: the transmission direction of a flexible subframe of a wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of a flexible subframe of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; and the transmission direction of one or more flexible subframes behind the flexible subframe where the uplink and downlink resource configuration information is located.
Preferably, when the subframes with subframe numbers of 3, 4, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes is at least one of the following combinations: UUUU, UUD, UUDD, UDDD, DDDD, UDUDUDUD, DDUU, DDUDUD and UDUU, wherein U is an uplink and D is a downlink; or, when the subframes with subframe numbers of 3, 4, 7, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes is at least one of the following combinations: UUUUU, UUUUD, UUDD, UUDDDD, UDUUU, UDUUDD, UDDDD, DDUU, DDUUDD, DDUDD and DDDDD, wherein U is an uplink and D is a downlink.
Preferably, the terminal sends the uplink and downlink resource configuration information on a downlink control signaling of a flexible subframe by at least one of the following methods: transmitting the uplink and downlink resource configuration information in a mode of reusing uplink scheduling signaling on a flexible subframe; transmitting the uplink and downlink resource configuration information in a mode of reusing downlink scheduling signaling on a flexible subframe; transmitting the uplink and downlink resource configuration information in a mode of reusing an uplink power control signaling on a flexible subframe; and sending the uplink and downlink resource configuration information in a mode of reusing a feedback signaling of uplink data transmission on the flexible subframe.
Preferably, the uplink scheduling signaling is at least one of the following: downlink control messages DCI format0, DCI format 4; the downlink scheduling signaling is at least one of the following: DCI format1, DCI format1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 2D; the uplink power control signaling is at least one of the following: DCI format3, DCI format 3A; and the feedback signaling for uplink data transmission is signaling sent on a physical hybrid automatic repeat request indicator channel PHICH.
Preferably, the reused uplink scheduling signaling is a signaling for sending the uplink and downlink resource configuration information, and the signaling and the uplink scheduling signaling use the same source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the reused downlink scheduling signaling is a signaling used for sending the uplink and downlink resource configuration information, and the signaling and the downlink scheduling signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the reused uplink power control signaling is a signaling for sending the uplink and downlink resource configuration information, and the signaling and the uplink power control signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the feedback signaling for reusing the uplink data transmission indicates the uplink and downlink resource configuration information by using one or more PHICH channel resources.
According to another aspect of the present invention, there is provided an apparatus for processing uplink and downlink resource allocation information, including: and the first sending module is used for sending the uplink and downlink resource configuration information to the terminal by the base station on the downlink control signaling of the flexible subframe.
According to still another aspect of the present invention, there is provided an apparatus for processing uplink and downlink resource allocation information, including: and the first receiving module is used for the terminal to receive the uplink and downlink resource configuration information on the downlink control signaling of the flexible subframe.
By adopting the invention, the base station is adopted to send the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe, so that the problems of long period, large delay and inconsistent signaling execution between the terminal and the base station in the situation of dynamically adjusting uplink and downlink configuration in the related technology are solved, and the problems of large physical layer control signaling overhead and high equipment realization complexity are solved in the case of realizing high layer signaling, so that the problems of large high layer signaling delay and inconsistent understanding of the terminal and the base station on the signaling execution time are effectively avoided on the premise of not occupying additional physical layer resources, not increasing additional control signaling overhead and not improving the equipment complexity, and the efficient and accurate transmission of the uplink and downlink resource configuration information is realized.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In this embodiment, a method for processing uplink and downlink resource allocation information is provided, and fig. 3 is a first flowchart of a method for processing uplink and downlink resource allocation information according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S302, the base station sends the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe.
Through the step, the sub-frames in the wireless frame are divided into fixed sub-frames and flexible sub-frames, the fixed sub-frames are the sub-frames with unchanged uplink and downlink transmission directions, the flexible sub-frames are the sub-frames with uncertain uplink and downlink transmission directions, and then the base station sends uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible sub-frames; compared with the situation that the uplink and downlink configuration is dynamically adjusted in the related technology, when the high-level signaling is adopted for implementation, the long period and the large delay exist, the signaling execution between the terminal and the base station is inconsistent, when the physical-level signaling is adopted for implementation, the physical-level control signaling overhead exists, the equipment implementation complexity is high, the problems that the high-level signaling delay is large and the understanding of the terminal and the base station to the signaling execution time is inconsistent are effectively solved, and the efficient and accurate transmission of the uplink and downlink resource configuration information is realized on the premise that no additional physical-level resource is occupied, no additional control signaling overhead is increased, and the complexity of the equipment is not improved.
Preferably, the flexible subframe may be at least one of: subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in a radio frame. The uplink and downlink resource configuration information may be at least one of the following: uplink and downlink configuration information indicating the transmission direction of each subframe in a wireless frame; a transmission direction of the flexible subframe.
Wherein, when the uplink and downlink resource configuration information is uplink and downlink configuration information indicating a transmission direction of each subframe in a radio frame, at least one of the following situations may be included: the uplink and downlink resource configuration information of the wireless frame where the uplink and downlink resource configuration information is located; the uplink and downlink resource configuration information of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; under the condition that the uplink and downlink resource configuration information is the transmission direction of the flexible subframe, at least one of the following situations may be included: the transmission direction of a flexible subframe of a wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of a flexible subframe of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; and the transmission direction of one or more flexible subframes behind the flexible subframe where the uplink and downlink resource configuration information is located.
When the flexible subframes are different subframes in a radio frame, the transmission directions of the flexible subframes may be in various combinations, for example, in the case that subframes with subframe numbers of 3, 4, 8, and 9 in the radio frame are flexible subframes, the transmission directions of the flexible subframes may be at least one of the following combinations: UUUU, UUD, UUDD, UDDD, DDDD, UDUDUDUD, DDUU, DDUDUD and UDUU, wherein U is an uplink and D is a downlink; for another example, when the subframes with subframe numbers 3, 4, 7, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes may be at least one of the following combinations: UUUUU, UUUUD, UUDD, UUDDDD, UDUUU, UDUUDD, UDDDD, DDUU, DDUUDD, DDUDD and DDDDD, wherein U is an uplink and D is a downlink.
Preferably, the base station may send the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe in multiple manners, for example, at least one of the following manners: transmitting the uplink and downlink resource configuration information by reusing the uplink scheduling signaling on the flexible subframe; transmitting the uplink and downlink resource configuration information by reusing the downlink scheduling signaling on the flexible subframe; transmitting the uplink and downlink resource configuration information by reusing the uplink power control signaling on the flexible subframe; and sending the uplink and downlink resource configuration information in a mode of reusing a feedback signaling of uplink data transmission on the flexible subframe.
The uplink scheduling signaling may be at least one of the following: downlink control messages DCI format0, DCI format 4; the downlink scheduling signaling may be at least one of the following: DCI format1, DCI format1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 2D; the uplink power control signaling may be at least one of the following: DCI format3, DCI format 3A; the feedback signaling for uplink data transmission may be signaling sent on a physical hybrid automatic repeat request indicator channel PHICH.
The reuse uplink scheduling signaling is a signaling for sending uplink and downlink resource configuration information, and the signaling and the uplink scheduling signaling use the same information source bit overhead and/or use the same CRC scrambling mode; reusing the downlink scheduling signaling as a signaling for sending uplink and downlink resource configuration information and using the same information source bit overhead and/or using the same Cyclic Redundancy Code (CRC) scrambling mode with the downlink scheduling signaling; reusing the uplink power control signaling as a signaling for sending uplink and downlink resource configuration information and using the same information source bit overhead and/or using the same CRC scrambling mode as the uplink power control signaling; and reusing the feedback signaling of the uplink data transmission to indicate uplink and downlink resource configuration information by using one or more PHICH channel resources.
In this embodiment, a method for processing uplink and downlink resource allocation information is further provided, and fig. 4 is a second flowchart of the method for processing uplink and downlink resource allocation information according to the embodiment of the present invention, as shown in fig. 4, the flowchart includes the following steps:
step S402, the terminal receives the uplink and downlink resource configuration information on the downlink control signaling of the flexible subframe.
Through the steps, the base station sends uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe, wherein, the flexible sub-frame is a sub-frame with uncertain uplink and downlink transmission directions, and has long period, large delay and inconsistent signaling execution between the terminal and the base station when being realized by adopting high-level signaling under the condition of dynamically adjusting uplink and downlink configuration in the related technology, when the physical layer signaling is adopted for implementation, the problems of large signaling control overhead of the physical layer and high equipment implementation complexity exist, the problems of large delay of high-level signaling and inconsistent understanding of the terminal and the base station on the signaling execution time are effectively solved, therefore, the efficient and accurate transmission of the uplink and downlink resource configuration information is realized on the premise of not occupying additional physical layer resources, not increasing additional control signaling overhead and not improving the complexity of equipment.
Preferably, the flexible subframe may be at least one of: subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in a radio frame. The uplink and downlink resource configuration information may be at least one of the following: uplink and downlink configuration information indicating the transmission direction of each subframe in a wireless frame; a transmission direction of the flexible subframe.
Wherein, the uplink and downlink resource configuration information indicates the transmission direction of each subframe in the wireless frame, and the uplink and downlink resource configuration information includes at least one of the following: the uplink and downlink resource configuration information of the wireless frame where the uplink and downlink resource configuration information is located; the uplink and downlink resource configuration information of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of the uplink and downlink resource configuration information as the flexible subframe comprises at least one of the following: the transmission direction of a flexible subframe of a wireless frame where the uplink and downlink resource configuration information is located; the transmission direction of a flexible subframe of one or more wireless frames behind the wireless frame where the uplink and downlink resource configuration information is located; and the transmission direction of one or more flexible subframes behind the flexible subframe where the uplink and downlink resource configuration information is located.
When different subframes in the radio frame are flexible subframes, the transmission directions of the flexible subframes may be different, for example, when subframes with subframe numbers of 3, 4, 8, and 9 in the radio frame are flexible subframes, the transmission directions of the flexible subframes may be at least one of the following combinations: UUUU, UUD, UUDD, UDDD, DDDD, UDUDUDUD, DDUU, DDUDUD and UDUU, wherein U is an uplink and D is a downlink; for another example, when the subframes with subframe numbers 3, 4, 7, 8, and 9 in the radio frame are flexible subframes, the transmission direction of the flexible subframes may be at least one of the following combinations: UUUUU, UUUUD, UUDD, UUDDDD, UDUUU, UDUUDD, UDDDD, DDUU, DDUUDD, DDUDD and DDDDD, wherein U is an uplink and D is a downlink.
Preferably, the base station may send the uplink and downlink resource configuration information to the terminal on the downlink control signaling of the flexible subframe through at least one of the following manners: transmitting uplink and downlink resource configuration information in a mode of reusing uplink scheduling signaling on the flexible subframe; transmitting uplink and downlink resource configuration information in a mode of reusing downlink scheduling signaling on the flexible subframe; transmitting uplink and downlink resource configuration information in a mode of reusing an uplink power control signaling on a flexible subframe; and sending the uplink and downlink resource configuration information in a mode of reusing a feedback signaling of uplink data transmission on the flexible subframe.
The uplink scheduling signaling may be at least one of the following: downlink control messages DCI format0, DCI format 4; the downlink scheduling signaling may be at least one of: DCI format1, DCI format1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 2D; the uplink power control signaling may be at least one of: DCI format3, DCI format 3A; the feedback signaling of uplink data transmission can be signaling sent on a physical hybrid automatic repeat request indicator channel PHICH.
The reused uplink scheduling signaling may be a signaling for transmitting uplink and downlink resource configuration information, and the signaling and the uplink scheduling signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; the reused downlink scheduling signaling can be signaling for sending uplink and downlink resource configuration information and the downlink scheduling signaling use the same information source bit overhead and/or use the same Cyclic Redundancy Code (CRC) scrambling mode; reusing the uplink power control signaling as a signaling for sending uplink and downlink resource configuration information and using the same information source bit overhead and/or using the same CRC scrambling mode as the uplink power control signaling; and reusing the feedback signaling of the uplink data transmission to indicate uplink and downlink resource configuration information by using one or more PHICH channel resources.
In this embodiment, an apparatus for processing uplink and downlink resource configuration information is further provided, where the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 5 is a block diagram of a configuration of an apparatus for processing uplink and downlink resource allocation information according to an embodiment of the present invention, which, as shown in fig. 5, may be applied in a base station 50, and includes a first sending module 52 configured to send uplink and downlink resource allocation information to a terminal on a downlink control signaling of a flexible subframe.
Fig. 6 is a block diagram of a second structure of an apparatus for processing uplink and downlink resource allocation information according to an embodiment of the present invention, and as shown in fig. 6, the apparatus may be applied in a terminal 60 and includes a first receiving module 62, configured to receive uplink and downlink resource allocation information on a downlink control signaling of a flexible subframe.
In view of the above problems in the related art, this embodiment provides an improved method for implementing uplink and downlink resource allocation, which is implemented to carry uplink and downlink physical layer signaling without occupying additional physical layer resources, increasing additional control signaling overhead, and increasing the complexity of the device, and is described below.
It is assumed that the dynamic adjustment of TDD system resources is implemented as follows: when the ratio of uplink and downlink resources is dynamically changed, the transmission direction of some subframes is not changed all the time. Fig. 7 is a schematic structural diagram of a radio frame including flexible subframes according to an embodiment of the present invention, as shown in fig. 7, subframes 0 and 5 are always downlink subframes, subframes 2 and 7 are always uplink subframes, and subframes 1 and 6 are always special subframes in one radio frame. Subframes 3, 4, 8, and 9 are flexible subframes, and the transmission direction thereof may be dynamically changed into downlink or uplink. When designing an uplink data transmission scheme, all flexible subframes are assumed to be uplink subframes. Also, when designing a downlink data transmission scheme, all flexible subframes are assumed to be downlink subframes.
Under the above operating mode, fig. 8 is a schematic diagram of sending control signaling related to uplink data transmission in a fixed downlink subframe according to an embodiment of the present invention, and as shown in fig. 8, control information related to uplink data transmission is sent in the fixed downlink subframe. It should be noted that the control signaling may include at least one of the following: uplink scheduling signaling (information indicating uplink resource allocation, modulation and coding scheme used for data transmission, and the like) and ACK/NACK feedback signaling (information indicating whether uplink data transmission is correct or not).
Fig. 9 is a schematic diagram of sending feedback signaling related to downlink data transmission on a fixed uplink subframe according to an embodiment of the present invention, and as shown in fig. 9, the feedback signaling related to downlink data transmission is sent on the fixed uplink subframe in a centralized manner. Meanwhile, the scheduling signaling of the downlink data and the downlink data are sent on the same subframe.
In the above operating mode, when the flexible subframe transmits the downlink signal, some control signaling, for example, uplink scheduling signaling, uplink power control signaling, and feedback signaling related to downlink data transmission, may not be transmitted. In addition to the above, there are other ways to reduce the transmission of control information on flexible subframes. Fig. 10 is a schematic diagram of sending downlink scheduling signaling and downlink data feedback in fixed downlink and uplink subframes, respectively, according to an embodiment of the present invention, as shown in fig. 10, downlink scheduling information of a flexible subframe is transmitted by using the fixed subframe to implement cross-subframe scheduling of downlink data, so that downlink scheduling information may not be transmitted when the flexible subframe transmits a downlink signal (as shown in fig. 10). In addition, when the flexible subframe transmits the downlink signal, the resource of the original transmission control information on the subframe can be used for dynamically informing the uplink and downlink configuration conditions of the following radio frame.
For the base station side, the base station sends uplink and downlink subframe configuration information on a downlink control signaling of the flexible subframe; for the terminal side, the terminal receives the configuration information of the uplink subframe and the downlink subframe on the downlink control signaling of the flexible subframe;
preferably, the flexible subframe is a subframe in which a transmission direction can be changed at a time interval of less than 640 ms.
Preferably, the flexible subframe may be one or more of subframes 3, 4, 7, 8, 9 in a radio frame.
Preferably, the uplink and downlink configuration information may be uplink and downlink configuration signaling of a radio frame or a flexible subframe transmission direction. The uplink and downlink configuration signaling indicates the transmission direction of each subframe in the radio frame (e.g., uplink and downlink configuration shown in table 1).
It should be noted that, the transmission direction of the flexible subframes may be various, for example, (1) when 3, 4, 8, and 9 are flexible subframes, their transmission direction may be one or more of the following combinations: UUUU, UUD, UUDD, UDDD, DDDD, UDUDUDUDUDUD, DDUU, DDUDUD and UDUU; (2) when 3, 4, 7, 8, 9 are flexible subframes, their transmission direction may be one or more of the following combinations: UUUUU, UUUUD, UUDD, UUDDDD, UDUU, UDUUDD, UDDDD, DDUU, DDUUD, DDUDD and DDDDD.
The implementation manner of the downlink control signaling may also be multiple, and for example, the implementation manner may be implemented by one or more of the following manners: reusing the uplink scheduling signaling; reusing the downlink scheduling signaling; reusing the uplink power control signaling; reusing feedback signaling of uplink data transmission;
the uplink scheduling signaling may be: DCI format0 or 4; the downlink scheduling signaling may be: DCIformat 1/1A/1B/1C/1D/2/2A/2B/2C/2D; the uplink power control signaling may be: DCI format 3/3A; the feedback signaling for uplink data transmission may be: signaling transmitted on PHICH resources.
Wherein, reusing the uplink or downlink scheduling signaling or the uplink power control signaling means: the signaling for sending the uplink and downlink configuration information uses the same source bit overhead and the same CRC scrambling mode as the uplink scheduling signaling or the downlink scheduling signaling or the uplink power control signaling.
Reusing the feedback signaling of uplink data transmission refers to: and jointly indicating signaling of uplink and downlink configuration information by using a plurality of PHICH channel resources.
By the above embodiments and preferred embodiments, the physical layer signaling is used to notify the uplink and downlink configurations, thereby avoiding the disadvantages of large delay of the high layer signaling and inconsistent understanding of the signaling execution time by the terminal and the base station. By reusing the existing physical signaling structure, the complexity of device implementation is reduced. In addition, when combined with a specific data transmission method (e.g., using fixed uplink and downlink subframes to transmit uplink and downlink data transmission related control information), no additional control signaling overhead is added.
The following description is given with reference to preferred embodiments.
Preferred embodiment 1
Fig. 11 is a schematic diagram of a first preferred embodiment according to the present invention, and as shown in fig. 11, subframes 0 and 5 in a radio frame are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When subframe 4 of radio frame a transmits downlink signals, uplink and downlink configuration signaling of the next radio frame, i.e. configuration 2 in table 1, are transmitted on subframe 4.
Preferred embodiment two
Fig. 12 is a diagram of a second preferred embodiment according to the present invention, and fig. 12 shows that subframes 0 and 5 are fixed downlink subframes in a radio frame; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When the subframe 8 of the radio frame a transmits a downlink signal, the uplink and downlink transmission directions of the flexible subframe transmitting the next radio frame on the subframe 8 are: UDDD. The possible transmission direction combinations of the flexible subframes 3, 4, 8 and 9 are UUUU, UUD, UDDD and DDDD.
Preferred embodiment three
Fig. 13 is a schematic diagram of a third preferred embodiment according to the present invention, and fig. 13 shows that subframes 0 and 5 are fixed downlink subframes in a radio frame; subframe 2 or a fixed uplink subframe; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 7, 8, 9 are flexible subframes.
When the subframe 8 of the radio frame a transmits a downlink signal, the uplink and downlink transmission directions of the flexible subframe transmitting the next radio frame on the subframe 8 are: UUDDD. The possible transmission direction combinations of the flexible subframes 3, 4, 7, 8 and 9 are UUUUUU, UUUUUDD, UUDDD, UDDDD and DDDDD.
Preferred embodiment four
Fig. 14 is a diagram of a fourth preferred embodiment according to the embodiment of the present invention, as shown in fig. 14, a subframe 3 in a radio frame is a flexible subframe, and a time interval of transmission direction change is 20 ms.
Preferred embodiment five
Fig. 15 is a diagram of a fifth preferred embodiment according to the embodiment of the present invention, and as shown in fig. 15, a subframe 3 in a radio frame is a flexible subframe, and a time interval of transmission direction change is 10 ms.
Preferred embodiment six
And reusing the uplink scheduling signaling on the flexible subframe, that is, DCI format0 notifies 3 or 4bit uplink and downlink configuration information, where the uplink and downlink configuration information may be uplink and downlink configuration signaling (as shown in table 1) or a transmission direction of the flexible subframe (for example, when subframes 3, 4, 7, 8, and 9 are flexible subframes, the transmission direction of the flexible subframe that can be notified is uuuuuuuuuuuuuuuuuuuud, UUDDD, and ddddddd). The specific reuse mode is as follows:
the base station sends DCI format0 on the flexible subframe for indicating uplink and downlink configuration; and if the terminal detects the DCI format0 on the flexible subframe, the terminal considers that the control signaling informs uplink and downlink configuration, instead of uplink scheduling signaling.
That is, the signaling for notifying the uplink and downlink configurations on the flexible subframe has the same source bit overhead as that of the DCI format0, the same CRC scrambling method (for example, both use C-RNTI to scramble CRC), and has 1bit (i.e., Flag format0/format1A differential field in DCI format 0) as the DCI format0, so as to distinguish the signaling from the DCI format 1A. The above conditions enable the base station to indicate uplink and downlink configurations by using DCI format0 on the flexible subframe.
And 3 or 4 bits behind a Flag format0/format1 assignment field in the DCI format0 for notifying uplink and downlink configuration on the flexible subframe are used for indicating uplink and downlink configuration information. Except for the 3 or 4 bits and the 1bit for distinguishing the signaling and the DCI format1A, the other bits are fixed to be 1 or 0 or 3 or 4 bits of repeated uplink and downlink configuration information.
Preferred embodiment seven
And reusing the uplink power control signaling on the flexible subframe, namely notifying uplink and downlink configuration information of 3 or 4 bits by the DCI format3/3A, wherein the uplink and downlink configuration information can be uplink and downlink configuration signaling (as shown in Table 1) or a transmission direction of the flexible subframe (for example, when the subframes 3, 4, 8 and 9 are flexible subframes, the transmission direction of the flexible subframe which can be notified is UUUUU; UUD; UDDD; UUDDD; DDDD; etc.). The specific reuse mode is as follows:
the base station sends DCI format3/3A on the flexible subframe for indicating uplink and downlink configuration; and if the terminal detects the DCI format3/3A on the flexible subframe, the terminal considers that the control signaling informs uplink and downlink configuration, but not uplink power control signaling.
That is, the signaling for notifying the uplink and downlink configuration on the flexible subframe is the same as the source bit overhead of the DCI format3/3A, and the CRC scrambling method is the same (for example, the CRC is scrambled by using both TPC-RNTI). The above conditions enable the base station to indicate uplink and downlink configurations by using DCI format0 on the flexible subframe.
And the flexible subframe is used for notifying the first 3 or 4 bits in the DCI format3/3A of the uplink and downlink configuration to indicate uplink and downlink configuration information. Other bits than the above 3 or 4 bits are fixed to 1 or 0; or repeating the 3 or 4bit value of the uplink and downlink configuration information.
Preferred embodiment eight
And reusing the uplink scheduling signaling on the flexible subframe, that is, DCI format4 notifies 3 or 4bit uplink and downlink configuration information, where the uplink and downlink configuration information may be uplink and downlink configuration signaling (as shown in table 1) or a transmission direction of the flexible subframe (for example, when subframes 3, 4, 7, 8, and 9 are flexible subframes, the transmission direction of the flexible subframe that can be notified is uuuuuuuuuuuuuuuuuuuud, UUDDD, and ddddddd). The specific reuse mode is as follows:
the base station sends DCI format4 on the flexible subframe for indicating uplink and downlink configuration; and if the terminal detects the DCI format4 on the flexible subframe, the terminal considers that the control signaling informs uplink and downlink configuration, instead of uplink scheduling signaling.
That is, the signaling for notifying the uplink and downlink configuration on the flexible subframe is the same as the source bit overhead of the DCI format4, and the CRC scrambling method is the same (for example, the CRC is scrambled by using the C-RNTI). The above conditions enable the base station to indicate uplink and downlink configurations by using DCI format4 on the flexible subframe.
And the first 3 or 4 bits in the DCI format4 for notifying uplink and downlink configuration on the flexible subframe are used for indicating uplink and downlink configuration information. Except the 3 or 4 bits, other bits are fixed as 1 or 0 or repeat the 3 or 4bit values of the uplink and downlink configuration information.
Preferred embodiment nine
And reusing the downlink scheduling signaling on the flexible subframe, that is, DCI format1, or 1A, 1B, 1C, 1D, 2A, 2B, 2C, or 2D notifies the uplink and downlink configuration information of 3 or 4 bits, where the uplink and downlink configuration information may be uplink and downlink configuration signaling (as shown in table 1) or a transmission direction of the flexible subframe (for example, when subframes 3, 4, 7, 8, and 9 are flexible subframes, the transmission direction of the flexible subframe that can be notified is uuuuuuuuu, uuuuuuuuuuuuuud, UUDDD, DDDDD, ddddddd). The specific reuse mode is as follows:
the base station sends DCI format1 or 1A or 1B or 1C or 1D or 2A or 2B or 2C or 2D on the flexible subframe for indicating uplink and downlink configuration; when the terminal detects the DCI format1, 1A, 1B, 1C, 1D, 2A, 2B, 2C, or 2D on the flexible subframe, it considers that the control signaling informs the uplink and downlink configuration, but not the downlink scheduling signaling.
That is, the signaling for notifying the uplink and downlink configurations on the flexible subframe is the same as the source bit overhead of the DCI format1, or 1A, or 1B, or 1C, or 1D, or 2A, or 2B, or 2C, or 2D, and the CRC scrambling method is the same (for example, the CRC is scrambled by using the C-RNTI). The above conditions enable the base station to indicate uplink and downlink configurations by using DCI format1, 1A, 1B, 1C, 1D, 2A, 2B, 2C, or 2D on the flexible subframe.
And informing the first 3 or 4 bits in the DCI format1, 1A, 1B, 1C, 1D, 2A, 2B, 2C, or 2D of the uplink and downlink configuration on the flexible subframe to indicate uplink and downlink configuration information. Except the 3 or 4 bits, other bits are fixed as 1 or 0 or repeat the 3 or 4bit values of the uplink and downlink configuration information.
Note: for the DCI format1A, 1bit (i.e. flag format0/format1A differentiation field) for distinguishing the signaling from the DCI format0 cannot be used to notify uplink and downlink configuration information or take a fixed value.
Preferred embodiment ten
And reusing the used PHICH resource of an uplink data feedback signaling (namely ACK/NACK signaling) on the flexible subframe to inform the uplink and downlink configuration information of 3 or 4 bits, wherein the uplink and downlink configuration information can be uplink and downlink configuration signaling (shown in Table 1) or the transmission direction of the flexible subframe (for example, when the subframes 3, 4, 7, 8 and 9 are flexible subframes, the transmission direction of the flexible subframe which can be informed is UUUUUUUUU, UUUUDD, UUDD, UDDDD and DDDDD). The specific reuse mode is that the base station utilizes selected 3 or 4 PHICs on the flexible subframeH channel resource (PHICH channel resource pass:) Is shown in whichIs a PHICH group number,An orthogonal sequence index in a group) sends 3 or 4bit information (1 bit is sent on each PHICH resource) for indicating uplink and downlink configuration; the information detected by the terminal on the PHICH resource corresponding to the flexible subframe is uplink and downlink configuration information, but not feedback information of uplink data.
Description of the preferred embodiment
Fig. 16 is a diagram illustrating an eleventh preferred embodiment according to the present invention, and as shown in fig. 16, subframes 0 and 5 in one radio frame are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When subframe 4 of radio frame a transmits downlink signals, uplink and downlink configuration signaling of the next two radio frames, i.e. configuration 2 in table 1, are transmitted on subframe 4.
Note: the uplink and downlink configurations of the subframes a +1 and a +2 may be the same or different. When the configuration is the same, a 3bit notification may be used; when the configuration is different, the uplink configuration and the downlink configuration of the two radio frames can be respectively informed by using 2 x 3 bits.
Preferred embodiment twelve
Fig. 17 is a diagram of a twelfth preferred embodiment according to the embodiment of the present invention, as shown in fig. 17, in a radio frame, subframes 0 and 5 are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When subframe 4 of radio frame a transmits downlink signals, uplink and downlink configuration signaling of the current radio frame, i.e. configuration 2 in table 1, are transmitted on subframe 4.
Thirteen preferred embodiments
Fig. 18 is a schematic diagram of a thirteenth preferred embodiment according to the embodiment of the present invention, and as shown in fig. 18, subframes 0 and 5 in one radio frame are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When the subframe 8 of the radio frame a transmits a downlink signal, the uplink and downlink transmission directions of the flexible subframes in the two next radio frames transmitted on the subframe 8 are: UDDD. The possible transmission direction combinations of the flexible subframes 3, 4, 8 and 9 are UUUU, UUD, UDDD and DDDD.
Note: the flexible subframe transmission directions of the subframes a +1 and a +2 may be the same or different. When the same, a 2bit notification may be used; when the configurations are different, 2 x 2 bits can be used for notification respectively.
Fourteen preferred embodiments
Fig. 19 is a diagram of a fourteenth preferred embodiment according to the present invention, where in fig. 19, subframes 0 and 5 in a radio frame are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When the subframe 8 of the radio frame a transmits a downlink signal, the transmission direction of the last 5 flexible subframes transmitted on the subframe 8 is DUDDD.
Preferred embodiment fifteen
Fig. 20 is a schematic diagram of a fifteenth preferred embodiment according to the present invention, where in fig. 20, subframes 0 and 5 in a radio frame are fixed downlink subframes; subframes 2 and 7 or fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.
When the subframe 8 of the radio frame a transmits a downlink signal, the transmission direction for transmitting the flexible subframe of the current radio frame on the subframe 8 is UDDD.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.