Common Control Signaling Entry for Modular LTE Channel Structure
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Solution Overview
Problem
In LTE and other B3G wireless communication systems, efficiently decoding control channel structures and signaling entries for short sub-frame periods is challenging due to separate coding of control channels and lack of common signaling information.
Innovation Solution
Implementing a tree-structured control channel with cat0 information that provides non-UE-specific signaling about the control channel structure, including the number of multicarrier symbols, effective code rate, allocation list, and acknowledgement list, to assist UEs in decoding the control channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate coding of control channels is used, then each control channel can be independently decoded, but the search complexity and processing requirements for UEs increase significantly
Solution Approach 1:
The patent combines multiple control channels into a single common control channel structure. Instead of separately coding and transmitting multiple control channels that require independent decoding, the invention merges them into one unified channel with a hierarchical structure containing common information and UE-specific information, thereby reducing search complexity while maintaining independent decoding capability.
Solution Approach 2:
The common control channel serves multiple functions simultaneously: it provides common signaling information for all UEs, contains UE-specific control information, and enables both common and individual decoding operations. This multi-functional design reduces the need for separate control channels while maintaining the ability to independently decode specific UE information.
2Reliability
If common signaling information is not provided, then each UE must independently decode all control channel structures, but this increases processing requirements and reduces efficiency
Solution Approach 1:
The patent implements preliminary action by providing common signaling information at the beginning of the control channel structure. This common information includes parameters such as resource allocation, modulation schemes, and other configuration data that multiple UEs need to decode their specific control information efficiently. By preparing this common information in advance, UEs can quickly decode their specific data without re-processing common parameters.
Solution Approach 2:
The common signaling information acts as an intermediary that facilitates efficient decoding for all UEs. Instead of each UE independently decoding the entire control channel structure, the common signaling serves as a shared reference that enables UEs to efficiently extract their specific information, thereby improving overall decoding efficiency while maintaining accuracy.
3Adaptability or versatility
If dedicated signaling channels are set up for each UE, then each UE receives personalized control information, but the system complexity and resource overhead increase
Solution Approach 1:
The patent segments the control channel into hierarchical levels: common control information applicable to all UEs and UE-specific control information. This segmentation allows the system to provide personalized control information to each UE while sharing common information across all UEs, thereby reducing system complexity compared to having completely separate dedicated signaling channels for each UE.
Solution Approach 2:
The invention introduces a new dimensional structure to the control channel by organizing information hierarchically across different levels (common level and UE-specific level). This dimensional organization allows efficient delivery of both common and personalized information within a unified channel structure, reducing the need for multiple separate channels while maintaining UE-specific adaptability.
Data Source
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AI summary
Exemplary embodiments of the invention provide information (e.g., a common control signaling entry) for a control channel. The information may include signaling information about the overall control channel structure in a given sub-frame and/or other common information to assist UEs in decoding the channel (e.g., definitions related to the overall arrangement and parameterization of the channel structure). The information may provide non-UE-specif ic, common signaling information for the UEs served in the cell. In one exemplary embodiment of the invention, a method includes: providing at least one control channel allocated over at least one set of subcarrier resources, wherein the at least one control channel extends over a number n of multicarrier symbols (121); and transmitting information via a portion of the sub-carrier resources, wherein the transmitted information is indicative of at least one property of the at least one control channel (122).