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Downlink channel control signaling sending and receiving method and apparatus thereof

A channel control and transmission method technology, applied in the field of control signaling transmission, can solve the problems of high overhead of control signaling, inability to reduce control information, inability to take into account other performances, etc., to reduce overhead, reduce wireless resources, and average listening time. reduced effect

Inactive Publication Date: 2009-03-11
ZTE CORP
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  • Description
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  • Application Information

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Problems solved by technology

[0014] At present, the research on the content and allocation method of control signaling is a hot spot, but there are few studies on effectively reducing the overhead of control signaling. At present, there are schemes to use tree structure to reduce resource allocation information in control signaling, but this This solution only uses the tree structure to reduce the resource allocation information in the control signaling, but cannot reduce other control information, nor can it take into account other performances, such as the number of blind detection times, which is unfavorable for the UE
[0015] In LTE and IMT-Advanced systems, the modulation methods of service data include QPSK, 16QAM, 64QAM, etc. It can be found that many UEs have the same modulation methods at the same time. If the control signaling of each UE This information is sent everywhere, and the overhead of control signaling will be very large

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  • Downlink channel control signaling sending and receiving method and apparatus thereof
  • Downlink channel control signaling sending and receiving method and apparatus thereof
  • Downlink channel control signaling sending and receiving method and apparatus thereof

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Embodiment Construction

[0056] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0057] figure 1 The overall structure of the sending end of the uplink and downlink channel control signaling of the base station in this embodiment is shown. The method for reducing control signaling overhead in this embodiment includes a control signaling sending method and a corresponding control signaling receiving method. In this embodiment, it is assumed that the base station manages 14 UEs, and there are three modulation modes for service data transmitted between the base station and the UEs, namely QPSK, 16QAM and 64QAM. The above data is just an example.

[0058] refer to figure 2 The control signaling sending process of this embodiment is specifically as follows:

[0059] Step 201, the base station adjusts the service modulation mode of each UE in the next time slot according to the channel quality indicator CQI, thereby generat...

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Abstract

The invention discloses a method for sending and receiving a down channel control signal and a device thereof. At a sending terminal: control information of each receiving terminal is coded and modulated to generate CCE, and control information in the CCE does not include chosen control information; CCEs of the receiving terminal having same chosen control information are regarded as one group, the CCEs in each group are performed the serial number, and indication information used for indicating the CCE number and choosing the corresponding relation of the control information is generated; after the indication information is code and modulated, which is mapped on a subcarrier together with the CCEs of the receiving terminal, and is sent out from a control channel after the post-treatment is completed. At a receiving terminal: the CCEs are detected on the control channel and the indication information is received; when the CCE sending to a user is detected, and the chosen control information of the user can be obtained according to the analyzed number of the CCE and the corresponding relation of the CCE number and the chosen control information. The invention reduces the cost of the control signal.

Description

technical field [0001] The invention relates to the transmission technology of control signaling in a multi-user wireless communication system, in particular to a method and device for sending and receiving downlink channel control signaling. Background technique [0002] At present, the physical layer transmission technology commonly used in Long Term Evolution (LTE, Long Term Evolution) system and IMT-Advanced system is Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology. Utilization rate and low processing complexity make it a promising one among various downlink solutions. OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a group of mutually orthogonal sub-carriers. [0003] According to existing LTE, radio resources in an LTE system refer to time and freq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L27/26
Inventor 毕峰袁明
Owner ZTE CORP
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