Constrained UE Relay Selection via Maximum Packet Size
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Solution Overview
Problem
Constrained User Equipment (UE) in wireless communication systems face challenges in selecting an appropriate relay UE without knowing its configuration, leading to potential failures or delays in data transmission to a MSGin5G server.
Innovation Solution
The method involves a constrained UE sending a relay configuration request message to multiple UEs, receiving relay configuration response messages, and identifying the most suitable UE for relay services based on maximum allowed packet size and other parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constrained UE attempts to transmit data directly to a MSGin5G server without knowing relay UE configuration, then transmission speed may be fast when direct connection is available, but transmission reliability deteriorates when direct connection is unavailable
Solution Approach 1:
The constrained UE performs preliminary actions by broadcasting a relay configuration request message before actual data transmission when direct connection is unavailable. The UE collects relay configuration information from multiple relay UEs in advance, including their maximum allowed packet sizes, and pre-selects an appropriate relay UE based on this information. This preliminary relay selection process ensures that when data needs to be transmitted, a suitable relay path is already established, improving transmission reliability without requiring complex real-time decision-making.
2Reliability
If the constrained UE requests relay configuration from multiple UEs and selects based on maximum allowed packet size, then transmission reliability improves, but time consumption increases
Solution Approach 1:
The constrained UE applies partial action by requesting relay configuration from a limited number of nearby UEs (e.g., 3-5 UEs) rather than all possible UEs in the network. The UE broadcasts a relay configuration request message and collects responses from multiple relay candidates, then selects one based on maximum allowed packet size comparison. This partial approach to querying multiple UEs provides sufficient reliability improvement while limiting the time loss to a manageable duration, as the UE does not need to exhaustively search the entire network.
3Adaptability or versatility
If the constrained UE uses a relay UE with smaller maximum allowed packet size than needed, then device compatibility improves, but data transmission efficiency deteriorates
Solution Approach 1:
The constrained UE applies parameter changes by comparing its required packet size with the maximum allowed packet size parameter of each candidate relay UE. The UE extracts the maximum allowed packet size parameter from relay configuration response messages and selects a relay UE whose parameter matches or exceeds the required size. This parameter-based selection ensures that the chosen relay UE can handle the constrained UE's data transmission requirements efficiently, avoiding the need to fragment large packets and thereby maintaining high transmission productivity while ensuring compatibility.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to an embodiment, a method performed by a first user equipment (UE) which is a constrained UE in a wireless communication system is provided. The method comprises transmitting, to a plurality of UEs, a first message for requesting a relay configuration for the first UE, receiving, from at least one UE with a relay capability among the plurality of UEs, a second message as a response to the first message, the second message comprising information on the relay configuration, and identifying a second UE for a relay service among the at least one UE with the relay capability based on the information on a maximum allowed packet size of the second UE.