Paging for Mobile-Terminated Small Data Reception in Idle Mode
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in handling mobile-terminated small data reception when user equipment (UE) is in idle or inactive mode, leading to increased latency and resource consumption due to repeated transitions between modes.
Innovation Solution
A method where a user equipment (UE) receives a paging communication from a base station (BS) while in idle or inactive mode, initiates a random access channel (RACH) procedure, and receives mobile-terminated downlink data along with an uplink resource and an RRC release message, allowing the UE to remain in idle or inactive mode during data reception and transmit mobile-originated uplink data using the provided resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the UE transitions to connected mode to receive mobile-terminated small data, then data reception can be achieved, but signaling overhead increases and network resources are consumed
Solution Approach 1:
The patent merges the paging procedure with data transmission by allowing the base station to send mobile-terminated small data directly during the paging process while the UE remains in inactive mode. This combines what were previously separate operations (paging + connection establishment + data transmission) into a single integrated process, eliminating the need for full connected mode transition and reducing signaling overhead.
Solution Approach 2:
The patent applies preliminary action by having the base station prepare and transmit the small data packet during the paging procedure before the UE fully transitions to connected mode. The data is readied and sent in advance during the paging exchange, so when the UE receives the data, it can process it immediately without requiring complete mode transition, thus reducing the timing window and resource consumption.
2Quantity of substance
If the UE transitions to connected mode for small data reception, then data can be received, but latency increases due to repeated mode transitions
Solution Approach 1:
The patent applies the skipping principle by allowing the UE to receive small data directly during paging without completing the full connected mode transition sequence. The UE skips the intermediate steps of full connection establishment and mode transition, receiving data in a condensed, accelerated manner that eliminates unnecessary timing delays while still achieving reliable data delivery.
3Loss of energy
If the UE remains in inactive mode for small data reception, then power saving is improved, but reliable data transmission becomes challenging
Solution Approach 1:
The patent applies parameter changes by modifying the operational parameters of the UE during paging to enable data reception in inactive mode. Specifically, the base station adjusts transmission parameters (such as using dedicated paging resources and configuring appropriate modulation and coding schemes) to ensure reliable data delivery while the UE maintains its inactive state, thus achieving both power saving and reliability.
4Reliability
If full connected mode is used for small data, then transmission reliability is ensured, but network resources are over-consumed
Solution Approach 1:
The patent applies partial action by implementing a selective approach where the UE and base station engage only in the necessary minimal procedures for small data reception rather than full connected mode establishment. The system performs just enough signaling and resource allocation to enable reliable small data transmission, avoiding the excessive resources that would be consumed by complete mode transition and full connected mode procedures.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station (BS), a paging communication while the UE is in an inactive mode or an idle mode. The UE may transmit, to the BS and based at least in part on receiving the paging communication, a first communication as part of a random access channel (RACH) procedure. The UE may receive, from the BS and based at least in part on transmitting the first communication, a second communication that includes mobile-terminated downlink data, an indication of an uplink resource, and a radio resource control (RRC) release message. The RRC release message may cause the UE to remain in the inactive mode or the idle mode while receiving the mobile-terminated downlink data. The UE may transmit mobile-originated uplink data using the uplink resource. Numerous other aspects are provided.