US-12621838-B2 - Information transmission method and apparatus, and communication device, and storage medium using PDCCH indication with random access procedure

Abstract

An information transmission method is applied to a base station, and includes: sending a physical downlink control channel (PDCCH) signaling corresponding to a type of a user equipment (UE) according to the type of the UE; wherein the PDCCH signaling carries random access response control information for the UE; wherein different types of UEs correspond to different PDCCH signalings, and the random access response control information is configured to indicate scheduling information associated with a random access response.

Inventors

• Qin MU

Assignees

• BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date

20260505

Application Date

20200624

Claims (18)

1. 1 . An information transmission method, applied to a base station, comprising: receiving a random access preamble sent by a user equipment (UE); determining a type of the UE according to type indication information carried in the random access preamble; and sending a physical downlink control channel (PDCCH) signaling corresponding to the type of the UE according to the type of the UE; wherein the PDCCH signaling carries random access response control information for the UE; and wherein different types of UEs correspond to different PDCCH signaling, and the random access response control information is configured to indicate scheduling information associated with a random access response.
2. 2 . The method according to claim 1 , wherein search spaces of the different PDCCH signaling corresponding to the different types of UEs belong to different control resource sets (CORESETs).
3. 3 . The method according to claim 1 , wherein sending the PDCCH signaling corresponding to the type of the UE comprises: sending the PDCCH signaling on a candidate control channel element (CCE) resource determined according to a resource determination rule; wherein resource determination rules corresponding to the different types of UEs are different.
4. 4 . The method according to claim 3 , wherein rule parameters of the resource determination rules corresponding to the different types of UEs are different; and the rule parameters comprise at least one of offset parameters or random parameters.
5. 5 . The method according to claim 1 , wherein aggregation levels of PDCCH resources of the different PDCCH signaling corresponding to the different types of UEs are different; and/or numbers of candidate transmission positions of the PDCCH resources of the different PDCCH signaling corresponding to the different types of UEs are different; and/or candidate repeated transmission positions of the different PDCCH signaling corresponding to the different types of UEs are different.
6. 6 . The method according to claim 1 , wherein sending the PDCCH signaling corresponding to the type of the UE comprises: sending the PDCCH signaling within a random access response window corresponding to the type of the UE; wherein random access response windows corresponding to the different types of UEs are different.
7. 7 . The method according to claim 6 , wherein time intervals between the random access response windows corresponding to the different types of UEs and random access preambles are different; and/or durations of the random access response windows corresponding to the different types of UEs are different.
8. 8 . The method according to claim 1 , wherein scrambling sequences of the different PDCCH signaling corresponding to the different types of UEs are different.
9. 9 . The method according to claim 8 , wherein a scrambling sequence is a random access radio network temporary identifier (RA-RNTI), wherein RA-RNTIs of the different types of UEs are different.
10. 10 . The method according to claim 1 , wherein physical downlink shared channel (PDSCH) resources corresponding to the different types of UEs scheduled by the random access response control information are different; and the PDSCH resources are configured to transmit the random access response.
11. 11 . The method according to claim 1 , further comprising: carrying random access response control information of a first type of UE with a PDCCH signaling corresponding to a second type of UE in response to a bandwidth of an initial broadband part (BWP) of the first type of UE being equal to a bandwidth of CORESET #0.
12. 12 . The method according to claim 1 , further comprising: sending a configuration signaling; wherein the configuration signaling is configured to indicate that random access response control information of a first type of UE is carried by a PDCCH signaling corresponding to the first type of UE or by a PDCCH signaling corresponding to a second type of UE.
13. 13 . The method according to claim 1 , wherein search spaces of the different PDCCH signaling corresponding to the different types of UEs are different.
14. 14 . An information transmission method, applied to a user equipment (UE), comprising: sending a random access preamble to a base station; wherein the random access preamble carries type indication information indicating a type of the UE, and receiving a physical downlink control channel (PDCCH) signaling with receiving parameters corresponding to the type of the UE; wherein the PDCCH signaling carries random access response control information of the UE; wherein different types of UEs correspond to different PDCCH signaling, and the random access response control information is configured to indicate scheduling information associated with a random access response; and wherein the receiving parameters comprise resource parameters.
15. 15 . The method according to claim 14 , wherein the receiving parameters comprise control resource set (CORESET) parameters; receiving the PDCCH signaling with the receiving parameters corresponding to the type of the UE comprises: receiving the PDCCH signaling on a CORESET of a search space of the PDCCH signaling corresponding to the type of the UE; wherein search spaces of the different PDCCH signaling corresponding to the different types of UEs belong to different CORESETs.
16. 16 . The method according to claim 14 , wherein the resource parameters comprise rule parameters of a resource determination rule; and receiving the PDCCH signaling with the receiving parameters corresponding to the type of the UE comprises: receiving the PDCCH signaling on a candidate control channel element (CCE) resource determined according to the resource determination rule of the PDCCH signaling corresponding to the type of the UE; wherein resource determination rules corresponding to the different types of UEs are different.
17. 17 . The method according to claim 16 , wherein rule parameters of the resource determination rules corresponding to the different types of UEs are different; and the rule parameters comprise at least one of offset parameters or random parameters.
18. 18 . A communication device, comprising: a processor; a transceiver; and a memory storing a program executable by the processor; wherein the processor is configured to: receive a random access preamble sent by a user equipment (UE); determine a type of the UE according to type indication information carried in the random access preamble; and send a physical downlink control channel (PDCCH) signaling corresponding to the type of the UE according to the type of the UE; wherein the PDCCH signaling carries random access response control information for the UE; and wherein different types of UEs correspond to different PDCCH signaling, and the random access response control information is configured to indicate scheduling information associated with a random access response.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a US national phase application of International Application No. PCT/CN2020/098273, filed Jun. 24, 2020, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to, but is not limited to, the technical field of wireless communication, and in particular to an information transmission method, an information transmission method apparatus, a communication device, and a storage medium. BACKGROUND In the fourth generation (4G) cellular mobile communication system, in order to support the Internet of Things services, a machine type communication (MTC) technology and a narrow band Internet of Things (NB-IoT) technology have been proposed, which are mainly aimed at low-speed and high-latency scenarios, such as meter reading and environmental monitoring scenarios. The NB-IoT technology generally supports a maximum rate of a few hundred k, and the MTC technology generally supports a maximum rate of a few M. In addition, with the continuous development of the Internet of Things services, such as the popularity of video surveillance, intelligent home, wearable devices, industrial sensor monitoring and the like, these services generally require a rate of 10M to 100M, and also have relatively high requirements for the latency. Thus, it is difficult for the MTC and NB-IoT technologies in LTE to meet these requirements. In the new radio (NR) of the fifth generation (5G) cellular mobile communication system, a new type of user equipment (UE) is used to meet the requirements of such mid-end Internet of Things devices. The new type of the UE is called a reduced capability UE or a reduced capability new radio (NR-lite) for short. The requirements for the reduced capability UE are low cost, low complexity, a certain degree of coverage enhancement and power saving. Since the current 5G NR is designed for high-end terminals such as high-speed and low-latency terminals, the current design cannot meet the above-mentioned requirements for the reduced capability UE. Therefore, it is necessary to modify the current NR system to meet the requirements for the reduced capability UE. SUMMARY In view of this, embodiments of the present disclosure provide an information transmission method, an information transmission apparatus, a communication device, and a storage medium. According to a first aspect of embodiments of the present disclosure, an information transmission method is provided. The information transmission method is applied to a base station, and includes sending a physical downlink control channel (PDCCH) signaling corresponding to a type of a user equipment (UE) according to the type of the UE. The PDCCH signaling carries random access response control information for the UE. Different types of UEs correspond to different PDCCH signalings, and the random access response control information is configured to indicate scheduling information associated with a random access response. According to a second aspect of embodiments of the present disclosure, an information transmission method is provided. The information transmission method is applied to a user equipment (UE), and includes receiving a physical downlink control channel (PDCCH) signaling with receiving parameters corresponding to a type of the UE. The PDCCH signaling carries random access response control information of the UE. Different types of UEs correspond to different PDCCH signalings, and the random access response control information is configured to indicate scheduling information associated with a random access response. According to a third aspect of embodiments of the present disclosure, a communication device. The communication device includes a processor; a transceiver; a memory; and an executable program stored in the memory and capable of being run by the processor. The processor is configured to execute steps of the information transmission method according to the first aspect or the second aspect when running the executable program. It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory only and are not intended to limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of embodiments of the present disclosure. FIG. 1 is a schematic diagram illustrating a wireless communication system according to an illustrative embodiment. FIG. 2 is a flowchart illustrating an information transmission method according to an illustrative embodiment. FIG. 3 is a schematic diagram illustrating CCH resource candidate positions according to an illustrative embodiment. FIG. 4 is a flowchart illustrating another informatio