Paging Position Allocation in Telecommunication Systems
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Solution Overview
Problem
Current paging mechanisms in E-UTRAN systems are inefficient when user equipment bandwidth is smaller than the network bandwidth, leading to unnecessary receiver retuning and suboptimal resource allocation, especially due to the large number of active and idle mode users and bursty packet arrivals.
Innovation Solution
A method where user equipment indicates its paging position in the frequency domain to the network, receives paging information within its bandwidth, and dynamically changes positions based on network-provided selection probabilities to ensure even distribution and efficient resource use, allowing the network to manage paging positions without duplicating messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If paging is sent in the centre of the transmission bandwidth, then user equipments with the same bandwidth as the cell transmission bandwidth can receive paging efficiently, but user equipments with smaller bandwidth must retune their receiver and resource allocation flexibility is reduced
Solution Approach 1:
The cell transmission bandwidth is divided into multiple paging regions (first paging region and second paging region) in the frequency domain. User equipments are assigned to specific paging regions based on their bandwidth capabilities and identification values, allowing simultaneous paging of multiple UEs with different bandwidths without requiring receiver retuning.
Solution Approach 2:
Different paging regions are allocated to different types of user equipments based on their specific bandwidth requirements. User equipments with smaller bandwidths are assigned to specific regions where they can receive paging without retuning, while user equipments with full bandwidth can access any region. This local optimization resolves the contradiction between paging efficiency and bandwidth adaptability.
2Quantity of substance
If the number of paging messages per cell is increased to support more active and idle mode users, then more users can be supported, but paging consumes more network resources
Solution Approach 1:
Multiple paging messages for different user equipments are merged into a single paging message by including multiple user identification values in one paging transmission. The network can page multiple UEs simultaneously by embedding their identifiers in the same paging message, reducing the total number of transmissions and conserving network resources while supporting a larger number of users.
Solution Approach 2:
The paging message structure is designed to serve multiple functions by incorporating universal identification mechanisms that can address multiple user equipments with different bandwidth capabilities. A single paging message can simultaneously target UEs in different paging regions and with different bandwidth configurations, eliminating the need for separate paging transmissions for each UE type.
3Device complexity
If user equipment bandwidth is smaller than cell transmission bandwidth, then device complexity is reduced, but the user equipment must retune its receiver for each paging opportunity
Solution Approach 1:
User equipments are pre-assigned to specific paging regions based on their bandwidth capabilities and identification values before paging occurs. This preliminary assignment allows small-bandwidth UEs to configure their receivers once to monitor only their assigned paging region, eliminating the need for repeated retuning operations while maintaining support for reduced device complexity.
Data Source
AI summary
There is provided a method for use in a user equipment when the user equipment is in idle mode or any other low activity state, and when the user equipment bandwidth is smaller than the cell transmission bandwidth. The method comprises the steps of determining a paging position of the user equipment in the frequency domain; receiving, from the network, paging information within the user equipment reception bandwidth; and changing, if indicated by the network, the paging position of the user equipment within the cell transmission bandwidth.