Methods and apparatus for transmitting and receiving signals and communication systems

Abstract

In an embodiment of the present invention, a signal transmission / reception device is provided for a RedCap UE, the device includes a first transceiver unit, the first transceiver unit is used for the RedCap UE to obtain a configuration of a first initial downlink BWP, the first initial downlink BWP is an initial downlink BWP that is configured or defined solely for the RedCap UE; and the RedCap UE to receive a signal using the first initial downlink BWP before random access is completed.

Claims

1. A device for transmitting and receiving signals, applicable to RedCap UE, A processor for acquiring the setting of a first initial downlink BWP, wherein the first initial downlink BWP is an initial downlink BWP set independently for the RedCap UE; and An apparatus including a receiver that, during the random access procedure initialization period in the initial access procedure, selects a carrier for random access and then receives a PDCCH (Physical Downlink Control Channel) using the first initial downlink BWP.

2. The apparatus according to claim 1, The receiver is a device that receives the PDCCH using the first initial downlink BWP when it receives the setting of the first initial downlink BWP, or after it has received the setting of the first initial downlink BWP.

3. The apparatus according to claim 1, The receiver is a device that receives the PDCCH using the first initial downlink BWP when it receives the setting of the first initial downlink BWP, or after it has received the setting of the first initial downlink BWP.

4. The apparatus according to claim 1, The receiver, when using the first initial uplink BWP, receives the PDCCH using the first initial downlink BWP. The device wherein the first initial uplink BWP is an initial uplink BWP set up or defined independently for the RedCap UE.

5. The apparatus according to claim 2, The receiver is a device that receives the PDCCH using the first initial downlink BWP during or after the random access resource selection procedure.

6. The apparatus according to claim 1, A device wherein, after the processor selects an SSB from the SSBs defined by the cells, the receiver receives the PDCCH using the first initial downlink BWP.

7. The apparatus according to claim 2, The receiver is a device that receives the PDCCH using the first initial downlink BWP before or when receiving the random access response (RAR).

8. The apparatus according to claim 7, A device wherein the receiver receives the random access response after sending random access message 1 (Msg1, preamble) or random access message A (preamble + PUSCH), or when the random access response window (ra-ResponseWindow) is activated.

9. The apparatus according to claim 2, A device wherein, when a random access message 3 (Msg3) is transmitted, or after the transmission of a random access message 3 (Msg3), the receiver receives the PDCCH using the first initial downlink BWP.

10. The apparatus according to claim 1, The receiver, in the initial access procedure, receives random access message 2 and random access message 4 using the first initial downlink BWP. The aforementioned first initial downlink BWP is a device that does not include a complete control resource set 0 (CORESET #0).

11. A device for transmitting and receiving signals, applicable to network equipment, Including the transmitter, The aforementioned transmitter is Send the setting of the first initial downlink BWP to the RedCap UE, the first initial downlink BWP being an initial downlink BWP set up independently for the RedCap UE; and A device that transmits a PDCCH (Physical Downlink Control Channel) to the RedCap UE using the first initial downlink BWP after the RedCap UE has selected a carrier for random access during the random access procedure initialization period in the initial access procedure.

12. The apparatus according to claim 11, The device includes, in the configuration of the first initial downlink BWP transmitted to the RedCap UE, the configuration of at least one control resource set (CORESET) and / or the configuration of at least one common search space (CSS).

13. A device for transmitting and receiving signals, applicable to RedCap UE, Including the processing unit, The aforementioned processing device is The first initial downlink BWP is set, and the first initial downlink BWP is an initial downlink BWP set or defined independently for the RedCap UE; and When the RedCap UE is in an idle or inactive state, or before the random access procedure for radio resource control (RRC) connection re-establishment, it is controlled to work on one bandwidth, wherein the one bandwidth is at least one of the candidate bandwidths. The at least one candidate bandwidth is Control resource set 0 (CORESET #0); Initial downlink BWP corresponding to non-RedCap UE; and The first initial downlink BWP, or a control resource set (CORESET) for receiving system information and / or paging and / or random access responses in the first initial downlink BWP, When the RedCap UE is working on the first initial downlink BWP, or on the control resource set (CORESET) for receiving system information and / or paging on the first initial downlink BWP, The aforementioned device further, The RedCap UE obtains the Master Information Block (MIB); Obtain system information block 1 (SIB1); and A device configured to switch to the first initial downlink BWP when it is determined that a cell can be selected.

14. The apparatus according to claim 13, When the RedCap UE is in an idle or inactive state, or before the random access procedure for re-establishing a radio resource control (RRC) connection, The RedCap UE is a device that uses one of the at least one candidate bandwidths, or determines the one bandwidth based on instruction information from a network device.

15. The apparatus according to claim 14, The device transmits the aforementioned instruction information via system information, a wireless resource control release (RRC release / RRC release with suspension indication) message, a wireless resource control reject (RRC reject) message, or a wireless resource control reconfiguration (RRC reconfiguration) message.

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