Cellular Paging Channel Mapping for Flexible Radio Resource Use
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cellular systems waste radio resources due to fixed allocation of transport and physical channels for paging information, which is inefficient for packet-based services like LTE, leading to limited applicability of radio resources.
Innovation Solution
A method for variably and flexibly setting up and mapping transport and physical channels to transmit paging information, including forming a paging channel in a transport channel, setting a paging indication channel based on radio resources, and allocating paging messages to physical channels with scheduling information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed allocation of transport channel and physical channel for paging information is used, then reliability of paging information transmission is improved, but radio resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from fixed channel allocation to dynamic channel selection. The base station dynamically determines whether to use the paging indication channel or the first downlink shared channel for transmitting paging information based on real-time conditions, allowing the system to adapt to varying traffic loads and optimize resource utilization while maintaining reliable delivery.
Solution Approach 2:
The patent employs parameter changes by modifying the channel selection parameter based on traffic conditions. When downlink traffic is detected, the system changes the transmission parameter from using the paging indication channel to using the first downlink shared channel, thereby optimizing the balance between reliability and resource efficiency under different operational scenarios.
2Adaptability or versatility
If physical layer channel S-CCPCH is allocated with OVSF code index, then paging capability is improved, but radio resource waste increases
Solution Approach 1:
The patent applies universality by making the first downlink shared channel serve multiple functions: it can carry user data traffic and also serve as the paging information transmission channel when needed. This eliminates the dedicated paging channel requirement and allows the same physical resource to be utilized for both purposes, thereby reducing radio resource waste while maintaining paging capability.
Solution Approach 2:
The patent merges the paging information transmission function with the downlink shared channel function. Instead of having separate dedicated channels for paging and data transmission, the system combines these functions by allowing the first downlink shared channel to carry both user data and paging information, thereby eliminating redundant resource allocation and reducing overall radio resource waste.
3Stability of the object's composition
If static operation of S-CCPCH is used, then circuit-based system stability is improved, but radio resource applicability deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static channel operation to dynamic channel selection. The base station dynamically determines whether to use the paging indication channel or the first downlink shared channel for transmitting paging information based on real-time traffic conditions, allowing the system to adapt to varying loads while maintaining stability through controlled dynamic behavior.
Solution Approach 2:
The patent employs parameter changes by modifying the channel selection parameter based on traffic conditions. When downlink traffic is detected, the system changes the transmission parameter from using the paging indication channel to using the first downlink shared channel, thereby optimizing the balance between stability and adaptability under different operational scenarios.
Data Source
AI summary
Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.