Paging Resource Configuration for Wireless Device Power Reduction
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Solution Overview
Problem
Existing wireless communication systems face issues with false wake-ups and high power consumption due to UEs monitoring paging messages intended for other UEs, as they do not efficiently sense mobility and configure paging resources.
Innovation Solution
The proposed solution involves configuring multiple tracking area codes (TACs) based on TAC characteristics, allowing UEs to select the appropriate TAC for paging messages, and configuring UE-specific paging resources to reduce unnecessary monitoring and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all UEs within the TAC monitor the common search space for paging messages, then the network can deliver paging to any UE in the TAC, but UEs mistakenly wake up for paging messages not intended for them, increasing power consumption
Solution Approach 1:
The patent segments the common search space into multiple search space sets, each associated with specific TACs. UEs are configured to monitor only the search space sets corresponding to their assigned TACs, rather than monitoring all common search spaces. This segmentation reduces the number of PDCCH candidates UEs need to monitor, thereby reducing power consumption while maintaining reliable paging delivery within each TAC segment.
Solution Approach 2:
The patent applies local quality by configuring different search space monitoring characteristics for different TACs. Each UE receives customized search space configuration information based on its specific TAC assignment, allowing UEs to optimize their monitoring behavior locally according to their TAC rather than using a uniform monitoring approach across all TACs.
2Reliability
If UEs monitor the common search space to resolve paging messages, then paging delivery can be achieved, but the probability of false wake-up increases
Solution Approach 1:
By segmenting the search space monitoring into TAC-specific search space sets, the patent reduces the number of paging messages UEs need to check. UEs only monitor search space sets associated with their configured TACs, which reduces the probability of encountering and falsely processing paging messages intended for other UEs, thereby reducing false wake-ups while maintaining reliable delivery to intended recipients.
Solution Approach 2:
The patent performs preliminary configuration of search space sets and their associated TACs before the UE begins monitoring. The network provides the UE with configuration information including search space set identifiers and their corresponding TACs in advance, allowing the UE to pre-determine which search spaces to monitor and avoid unnecessary monitoring of irrelevant paging messages.
3Reliability
If UEs monitor all paging messages in the common search space, then comprehensive paging coverage is achieved, but device complexity increases
Solution Approach 1:
The patent divides the monitoring task into segmented search space sets, each with defined TAC associations. This segmentation simplifies the UE's monitoring complexity by providing a clear structure: the UE monitors only those search space sets whose associated TACs match its configured TACs, rather than blindly monitoring all common search spaces without distinction.
Solution Approach 2:
The network performs preliminary configuration by providing the UE with search space set configuration information including identifiers and associated TACs before monitoring begins. This preliminary action reduces device complexity by pre-establishing the monitoring rules, allowing the UE to efficiently determine which search spaces to monitor without complex real-time decisions.
Data Source
AI summary
Methods, apparatus and systems for configuring a paging resource in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication device is disclosed. The method comprises: receiving a first message from a wireless communication node, wherein the first message comprises information about a plurality of tracking area codes (TACs) and a plurality of TAC characteristics; transmitting a second message to the wireless communication node, wherein the second message includes a TAC that is selected from the plurality of TACs based on at least one of the plurality of TAC characteristics of the wireless communication device; and receiving a third message within the TAC, wherein the TAC comprises at least one cell.