User Equipment Group Formation via Two-Step Random Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing method for establishing a user equipment cooperation group in wireless communications systems suffers from a long delay and low efficiency due to a contention-based four-step random access process.
Innovation Solution
A method and apparatus for establishing a user equipment cooperation group by reducing the process to a two-step random access mechanism, where neighboring user equipment receives a message from the target user equipment, sends a message to the base station, and receives a user equipment cooperation group identifier, thereby determining the group membership.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a contention-based four-step random access process is used to establish a user equipment cooperation group, then the group can be established with proper coordination, but the delay of the group establishing process becomes long and the efficiency becomes low
Solution Approach 1:
The base station pre-allocates random access resources (time-frequency resources, preamble sequences) to multiple user equipments before the actual group establishment process. This preliminary allocation allows UEs to skip the contention resolution phase and directly proceed to group formation, significantly reducing establishment delay while maintaining coordination reliability
Solution Approach 2:
The base station acts as an intermediary that coordinates the group establishment by pre-assigning resources and managing the formation process. Instead of UEs competing with each other through multiple steps, the base station mediates by providing pre-configured resources that enable direct group formation, thus reducing delay while ensuring proper coordination
2Reliability
If a contention-based four-step random access process is used to establish a user equipment cooperation group, then the group can be established with proper coordination, but the efficiency of the group establishing process becomes low
Solution Approach 1:
The base station performs preliminary resource allocation and configuration before group establishment begins. By pre-assigning random access resources to multiple UEs, the system eliminates the time-consuming contention resolution steps, thereby大幅提高 establishment efficiency while maintaining coordination through base station management
Solution Approach 2:
The invention allows the group establishment process to skip the traditional four-step contention-based random access sequence. By using pre-allocated resources, UEs can rush through directly to group formation without waiting for contention resolution, significantly improving establishment efficiency while the base station ensures proper coordination is maintained
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A method and an apparatus for establishing a user equipment cooperation group are used to resolve problems of a relatively long delay of a group establishing process and relatively low efficiency of the group establishing process in the prior art. The method includes: receiving, by neighboring user equipment NUE, a first message sent by target user equipment TUE, where the first message includes a first preamble sequence and a data part of the TUE, and the first preamble sequence is used for random access between the TUE and the NUE; determining, by the NUE, the TUE based on the data part of the TUE; sending, by the NUE, a second message to a base station, where the second message includes a second preamble sequence and the data part of the NUE, and the second preamble sequence is used for random access between the NUE and the base station; and receiving, by the NUE, a third message sent by the base station, where the third message includes a user equipment cooperation group identifier.