Bandwidth part configurations for V2X communication
摘要
說(shuō)明書
A resource pool may be defined by a set of slots, subframes, or OFDM symbols, or groups of OFDM symbols. A transmitter UE 102 (e.g., UE1) may select the resources within the resource pool and the transmitter UE 102 may transmit a PSCCH and PSSCH associated with PSCCH. Here, which resource is selected by the transmitter UE 102, the gNB 160 may transmit information on a resource pool and the resource(s) within the resource pool. This information may be indicated via DCI, SIB, or dedicated RRC message. Alternately, the resource pool configuration may be preconfigured by each UE (e.g., UE1 or UE2). One or more resource pools for V2X transmission and one or more resource pools for V2X reception may be separately indicated via SIB, dedicated RRC message, MAC CE, or DCI.
Next, the resource pool configuration is explained. For each resource pool, the following information may be associated with all or part of the following information (e.g., resource pool information may include the following information elements to associated with V2X parameters): BWP identity (BWP ID); waveform (CP-OFDM or DFT-S-OFDM); DMRS type (e.g., DMRS type 1 and DMRS type 2 may be specified in the Uu interface, and which type is used for PSCCH or PSSCH); additional DMRS configuration; whether PT-RS is transmitted or not. In addition, PTRS density configuration (e.g., a threshold of MCS to determine time domain density (e.g., all OFDM symbols, every other OFDM symbol, and so on), and a threshold of the number of scheduled PRBs to determine frequency domain density (e.g., one subcarrier per RB, two subcarriers per RB, and so on)) may be associated with V2X parameters.
