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Collocation method of control channels in communication system

A communication system and control channel technology, applied in the field of communication, can solve problems such as no specific solutions are given, and achieve the effect of ensuring spectrum efficiency

Inactive Publication Date: 2010-09-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in order to adapt to various channel conditions, a wireless communication system has multiple frame structures. How to ensure the consistency of control channel design under the conditions of multiple frame structures, including the location of resources used to send control channels, resource Whether the number is consistent; in the same generation of communication standards, multiple communication systems coexist, how to design their own control channels to ensure that each communication system can coexist is also very important; moreover, in the development process of a communication system, it usually needs to continue in the evolution system Support its previous generation system, for example, IEEE802.16m system is the evolution system of IEEE 802.16e system, and IEEE 802.16e is the previous generation system of IEEE 802.16m, therefore, supporting the previous generation system also limits the design of the control channel of the evolution system method
[0007] At present, the existing technical solutions do not provide a specific solution to the problem of how the broadcast control channel occupies resources when cyclic prefixes of different lengths are used in a communication system that supports cyclic prefixes of different lengths

Method used

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  • Collocation method of control channels in communication system
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  • Collocation method of control channels in communication system

Examples

Experimental program
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Embodiment 1

[0073] According to an embodiment of the present invention, a method for configuring a control channel in a communication system is provided. The method includes: the communication system supports cyclic prefixes of different lengths, the number of logical resource units occupied by the broadcast control channel of the communication system is the same, and the broadcast control channel includes The primary broadcast control channel and / or the secondary broadcast control channel, and the frame structure of the communication system supports a TDD frame structure or an FDD frame structure.

[0074] Wherein, the system bandwidth of the communication system may be 5 MHz or 10 MHz or 20 MHz.

[0075] In a communication system, when the length of the cyclic prefix is ​​m, the number of OFDMA symbols contained in the subframe where the broadcast control channel is located is Msym, and when the length of the cyclic prefix is ​​n, the number of OFDMA symbols contained in the subframe whe...

example 1

[0079] figure 2 When 1 / 4CP is described, the TDD frame structure of the wireless communication system and the illustration of the broadcast control channel figure 1 ,Such as figure 2 As shown, wherein, the synchronization channel occupies the first OFDMA symbol of the subframe in the time domain, the synchronization channel refers to the primary synchronization channel and / or the secondary synchronization channel, and the broadcast control channel occupies the rest of the subframe in the time domain 5 OFDMA symbols, that is, the broadcast control channel occupies the second OFDMA symbol, the third OFDMA symbol, the fourth OFDMA symbol, the fifth OFDMA symbol, and the first subframe in the superframe in the time domain. Six OFDMA symbols. For the broadcast control channel, each logical resource unit includes 5 OFDMA symbols in the time domain and 18 subcarriers in the frequency domain, that is, the actual available subcarriers of each logical resource unit are 18x5, so that...

example 2

[0085] Figure 5 When it is 1 / 4CP, the FDD frame structure of the wireless communication system and the illustration of the broadcast control channel figure 1 ,Such as Figure 5 As shown, the first subframe in the superframe includes 6 OFDMA symbols, wherein the synchronization channel occupies the first OFDMA symbol of the subframe in the time domain, and the synchronization channel refers to the primary synchronization channel and / or the secondary synchronization channel, The broadcast control channel occupies the remaining 5 OFDMA symbols in the subframe in the time domain, that is, the broadcast control channel occupies the second OFDMA symbol and the third OFDMA symbol of the first subframe in the superframe in the time domain. , the fourth OFDMA symbol, the fifth OFDMA symbol, and the sixth OFDMA symbol. For the broadcast control channel, each logical resource unit includes 5 OFDMA symbols in the time domain and 18 subcarriers in the frequency domain, that is, the actu...

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Abstract

The invention discloses a collocation method of control channels in a communication system, comprising: the communication system supports cyclic prefixes with different lengths, and the numbers of logic resource units occupied by the broadcast control channels of the communication system are same. The invention solves the problem-how the control channels to occupy resource positions and modes, ensures that a terminal can accurately decode control information and ensures the frequency spectrum efficiency of a wireless communication system.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for configuring a control channel in a communication system. Background technique [0002] In a wireless communication system, a base station is a device that provides functions such as initial access, service transmission, and resource management to terminals. Usually, the base station implements the above functions through control channels and management messages. The base station communicates with the terminal through an uplink / downlink. The downlink refers to the wireless link from the base station to the terminal, and the uplink refers to the wireless link from the terminal to the base station. [0003] Orthogonal Frequency Division Multiplexing (OFDM for short) technology is a high-speed transmission technology in a wireless environment, which improves performance against multipath fading by extending the pulse width of symbols. The realization principle of OFDM technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/14H04L27/26
Inventor 关艳峰方惠英夏薇刘颖
Owner ZTE CORP
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