Method and device in nodes used for wireless communication

Abstract

A method and a device in nodes used for wireless communication are disclosed by the present disclosure. The node receives a first signaling and a first signal; and then transmits a first bit block in a first time-frequency resource set; the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, which is used to indicate whether the first signal is correctly received; the first signaling is used to determine the first time-frequency resource set; a target index is equal to one of the K1 candidate indexes, and is used to determine a position of the first information block in the first bit block. The present disclosure optimizes the system performance by improving the method and device for feedback information transmission in multicast/groupcast mode.

What is claimed is: 
     
         1 . A first node for wireless communications, comprising:
 a first receiver, receiving a first signaling and a first signal, receiving a second signaling and a second signal;   a first transmitter, transmitting a first bit block in a first time-frequency resource set, the first bit block being comprised of more than one bit;   wherein the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, the first information block is used to indicate whether the first signal is correctly received, and the first information block comprises a positive integer number of bits; the first signaling is used to determine the first time-frequency resource set; an index of a serving cell to which the first signal belongs is equal to a candidate index of K1 candidate indexes, K1 being a positive integer greater than 1; a target index is equal to a candidate index of the K1 candidate indexes, and the target index is used to determine a position of the first information block in the first bit block; at least one of a property associated with the first signaling or a property associated with the first signal is used to determine the target index out of the K1 candidate indexes; a first index is equal to an index of a serving cell to which the first signal belongs, the K1 candidate indexes also comprise a second index, the second index being different from the first index, at least one of a property associated with the first signaling or a property associated with the first signal is used to determine whether the target index is the first index or the second index; the second signaling comprises configuration information of the second signal, the first bit block carries a second information block, and the second information block is used to indicate whether the second signal is correctly received; frequency-domain resources occupied by the second signal and frequency-domain resources occupied by the first signal belong to a same serving cell; there is at least one OFDM symbol belonging to time-domain resources occupied by the first signal and time-domain resources occupied by the second signal simultaneously; the first index is used to determine a position of the second information block in the first bit block; the first bit block is a piece of Uplink Control Information; a physical layer channel bearing the first signal comprises a PDSCH, a physical layer channel bearing the second signal comprises a PDSCH.   
     
     
         2 . The first node according to  claim 1 , wherein the second index is equal to a sum of the first index and a first integer, the first integer being a non-negative integer greater than 0. 
     
     
         3 . The first node according to  claim 1 , wherein the property associated with the first signaling comprises an RNTI used for scrambling CRC comprised in the first signaling; the CRC comprised in the first signaling uses a C-RNTI for scrambling and the target index is the first index, or the CRC comprised in the first signaling uses a given RNTI for scrambling and the target index is the second index. 
     
     
         4 . The first node according to  claim 1 , wherein the property associated with the first signaling comprises a time-frequency resource pool to which time-frequency resources occupied by the first signaling belong; the time-frequency resources occupied by the first signaling belong to a first time-frequency resource pool and the target index is the first index, or the time-frequency resources occupied by the first signaling belong to a second time-frequency resource pool and the target index is the second index; an identifier employed by the first time-frequency resource pool is different from an identifier employed by the second time-frequency resource pool. 
     
     
         5 . The first node according to  claim 1 , wherein the property associated with the first signal comprises a traffic type of the first signal; the traffic type of the first signal does not comprise multicast traffics and the target index is the first index, or the traffic type of the first signal comprises multicast traffics and the target index is the second index. 
     
     
         6 . The first node according to  claim 1 , wherein the first bit block comprises Q1 HARQ-ACK information blocks, and the Q1 HARQ-ACK information blocks are respectively used to indicate whether Q1 first-type signals are correctly received, the first signal being one of the Q1 first-type signals, Q1 being a positive integer greater than 1; the target index is used to determine a position of the first information block in the Q1 HARQ-ACK information blocks. 
     
     
         7 . The first node according to  claim 2 , wherein the first integer is configured by an RRC signaling. 
     
     
         8 . The first node according to  claim 1 , wherein the first receiver receives a third signaling; the third signaling is used to indicate K1 candidate indexes. 
     
     
         9 . The first node according to  claim 1 , wherein the K1 candidate indexes are respectively equal to K1 integers, the K1 integers are arranged sequentially in an ascending order, and the K1 integers are associated with K1 first-type identifiers; a serving cell to which the first signal belongs comprises K1 spatial resource sets, or a serving cell to which the first signaling belongs comprises K1 spatial resource sets; the K1 spatial resource sets are respectively associated with the K1 first-type identifiers. 
     
     
         10 . The first node according to  claim 1 , wherein the first index is a non-negative integer; the first index is a ServCellIndex, or the first index is a ServCellId, or the first index is a ServCellIdentity; the second index is a non-negative integer. 
     
     
         11 . The first node according to  claim 1 , wherein the second index is equal to a sum of the first index and a first integer, the first integer being a non-negative integer greater than 0, the first integer either being fixed or configured by an RRC signaling. 
     
     
         12 . The first node according to  claim 5 , wherein the Q1 first-type signals are sequentially associated with the Q1 HARQ-ACK information blocks in an order of firstly in time domain, then according to SPS PDSCH configuration identifiers and finally according to indexes employed. 
     
     
         13 . The first node according to  claim 1 , wherein time-domain resources respectively occupied by the first signal and the second signal are overlapping, and the first signal and the second signal are FDM in frequency domain; the first signal is used for multicast and groupcast transmissions, while the second signal is used for unicast transmission, the first signal and the second signal respectively occupying independent HARQ-ACK process numbers. 
     
     
         14 . The first node according to  claim 9 , wherein the first signal is associated with a given spatial resource set of the K1 spatial resource sets, or the first signaling is associated with a given spatial resource set of the K1 spatial resource sets; the given spatial resource set correspond to a given first-type identifier of K1 first-type identifiers, the given first-type identifier and an index of a serving cell to which the first signal belongs are used to determine a given integer of the K1 integers that is used by the first signal, and the given integer is equal to a target index employed by the first signal. 
     
     
         15 . The first node according to  claim 12 , wherein a sum of the given first-type identifier and the index of the serving cell is equal to the given integer. 
     
     
         16 . The first node according to  claim 12 , wherein the phrase that the first signal is associated with a given spatial resource set of the K1 spatial resource sets means that time-frequency resources occupied by the first signal belong to the given spatial resource set. 
     
     
         17 . The first node according to  claim 12 , wherein the phrase that the first signaling is associated with a given spatial resource set of the K1 spatial resource sets means that time-frequency resources occupied by the first signaling belong to the given spatial resource set. 
     
     
         18 . The first node according to  claim 9 , wherein the K1 spatial resource sets are respectively K1 CORESETs, and the K1 first-type identifiers are respectively K1 ControlResourceSetIds employed by the K1 CORESETs; or, the K1 spatial resource sets are respectively K1 SearchSpaces, and the K1 first-type identifiers are respectively K1 SearchSpaceIds employed by the K1 SearchSpaces; or, the K1 spatial resource sets are respectively K1 SearchSpace Sets, and the K1 first-type identifiers are respectively K1 SearchSpaceIds employed by the K1 SearchSpace Sets; or, the K1 spatial resource sets are respectively K1 CORESET Pools, and the K1 first-type identifiers are respectively K1 coresetPoolIndexes employed by the K1 CORESET Pools; or, the K1 spatial resource sets are respectively K1 BWPs, and the K1 first-type identifiers are respectively K1 BWP-ids employed by the K1 BWPs. 
     
     
         19 . A second node for wireless communications, comprising:
 a second transmitter, transmitting a first signaling and a first signal, transmitting a second signaling and a second signal;   a second receiver, receiving a first bit block in a first time-frequency resource set, the first bit block being comprised of more than one bit;   wherein the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, the first information block is used to indicate whether the first signal is correctly received, and the first information block comprises a positive integer number of bits; the first signaling is used to determine the first time-frequency resource set; an index of a serving cell to which the first signal belongs is equal to a candidate index of K1 candidate indexes, K1 being a positive integer greater than 1; a target index is equal to a candidate index of the K1 candidate indexes, and the target index is used to determine a position of the first information block in the first bit block; at least one of a property associated with the first signaling or a property associated with the first signal is used to determine the target index out of the K1 candidate indexes; a first index is equal to an index of a serving cell to which the first signal belongs, the K1 candidate indexes also comprise a second index, the second index being different from the first index, at least one of a property associated with the first signaling or a property associated with the first signal is used to determine whether the target index is the first index or the second index; the second signaling comprises configuration information of the second signal, the first bit block carries a second information block, and the second information block is used to indicate whether the second signal is correctly received; frequency-domain resources occupied by the second signal and frequency-domain resources occupied by the first signal belong to a same serving cell; there is at least one OFDM symbol belonging to time-domain resources occupied by the first signal and time-domain resources occupied by the second signal simultaneously; the first index is used to determine a position of the second information block in the first bit block; the first bit block is a piece of Uplink Control Information; a physical layer channel bearing the first signal comprises a PDSCH, a physical layer channel bearing the second signal comprises a PDSCH.   
     
     
         20 . A method in a first node for wireless communications, comprising:
 receiving a first signaling and a first signal, receiving a second signaling and a second signal; and   transmitting a first bit block in a first time-frequency resource set, the first bit block being comprised of more than one bit;   wherein the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, the first information block is used to indicate whether the first signal is correctly received, and the first information block comprises a positive integer number of bits; the first signaling is used to determine the first time-frequency resource set; an index of a serving cell to which the first signal belongs is equal to a candidate index of K1 candidate indexes, K1 being a positive integer greater than 1; a target index is equal to a candidate index of the K1 candidate indexes, and the target index is used to determine a position of the first information block in the first bit block; at least one of a property associated with the first signaling or a property associated with the first signal is used to determine the target index out of the K1 candidate indexes; a first index is equal to an index of a serving cell to which the first signal belongs, the K1 candidate indexes also comprise a second index, the second index being different from the first index, at least one of a property associated with the first signaling or a property associated with the first signal is used to determine whether the target index is the first index or the second index; the second signaling comprises configuration information of the second signal, the first bit block carries a second information block, and the second information block is used to indicate whether the second signal is correctly received; frequency-domain resources occupied by the second signal and frequency-domain resources occupied by the first signal belong to a same serving cell; there is at least one OFDM symbol belonging to time-domain resources occupied by the first signal and time-domain resources occupied by the second signal simultaneously; the first index is used to determine a position of the second information block in the first bit block; the first bit block is a piece of Uplink Control Information; a physical layer channel bearing the first signal comprises a PDSCH, a physical layer channel bearing the second signal comprises a PDSCH.