Interference Processing for Wireless Uplink Downlink Control Channels
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Solution Overview
Problem
In wireless communication systems, especially in FDD and TDD systems, there is interference between uplink and downlink control channels between neighboring base stations, which affects the efficient use of resources and data transmission reliability.
Innovation Solution
A method and apparatus for interference processing that involve receiving uplink control channel configuration information from a neighboring base station, determining the location of interference, and eliminating it by not allocating overlapping resources, thereby preventing interference between uplink and downlink control channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a base station sends uplink control signaling through a blank uplink subframe to ensure backward compatibility and flexible scheduling, then backward compatibility and scheduling flexibility are improved, but interference is generated to downlink control channel signaling reception by neighboring base stations
Solution Approach 1:
The invention applies preliminary action by having the serving base station send uplink control channel configuration information of the neighboring base station to the UE in advance. This allows the UE to identify interference locations before actual interference occurs and take preventive measures during downlink control channel reception, thus resolving the contradiction between maintaining backward compatibility and avoiding interference to neighboring base stations.
2Productivity
If UL resources are used for downlink transmission to improve utilization of FDD UL frequency band, then resource utilization is improved, but interference occurs between uplink control signaling from one base station and downlink control channel signaling at another base station
Solution Approach 1:
The invention uses the UE as an intermediary to receive and process uplink control channel configuration information from the serving base station. The UE then identifies interference locations and eliminates interference, acting as a mediator between the base stations to enable resource sharing while preventing harmful interference between uplink and downlink control channels.
3Measurement precision
If the UE receives and processes uplink control channel configuration information to identify interference locations, then interference elimination accuracy is improved, but device complexity increases
Solution Approach 1:
The invention applies local quality by focusing the UE's processing efforts specifically on identifying interference locations in the downlink control channel, rather than requiring comprehensive analysis of all signal parameters. The UE uses the received uplink control channel configuration information to pinpoint specific resource locations where interference may occur, thereby achieving high precision with minimal additional complexity.
Data Source
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AI summary
The present invention discloses an interference processing method, including: receiving, by a user terminal UE, uplink control channel configuration information of a cell of a neighboring base station, which is sent by a serving base station where the uplink control channel configuration information includes physical uplink control channel PUCCH configuration information, physical random access channel PRACH configuration information, or channel sounding reference symbol Sounding RS configuration information of the cell of the neighboring base station; determining, by the UE, according to the configuration information, a location where the serving base station suffers interference from the neighboring base station; and eliminating the interference according to the determined interference location. The present invention also discloses an interference elimination apparatus.