Control information transmitting method and device

Abstract

The invention discloses a control information transmitting method and a control information transmitting device, wherein the control information transmitting method comprises the following steps: a special sub frame is established in advance through the orthogonal frequency division multiplexing (OFDM) symbol translational mode, the OFDM symbol in the specific resource of the control channel in the special sub frame is translated to the middle part and / or tail part of the sub frame, namely a normal sub frame is split into micro sub frames, and the flexibility is accordingly increased; when the special sub frame needs to be utilized for configuring control channel resource for a user, the control channel resource is allocated to the user according to the principle that the translational resource in the special sub frame is allocated to a user in strong interference; and the control information to be transmitted to the user is added to the allocated control channel and is transmitted to the user. With the control information transmitting method and the control information transmitting device, the interference of physical resource containing the control channel or control information between cells is relieved, the success rate of signaling receiving and resolving control is improved, and the system performance is effectively improved accordingly.

Description

technical field [0001] The present invention relates to the resource configuration technology in the mobile communication system, in particular to the method and device for sending control information. Background technique [0002] When the existing system sends control information for users, it needs to configure the control channel used. There are two specific configuration methods: one is static, that is, the time-frequency resource where the control channel is located is fixed, and correspondingly, The receiving end can acquire it at a fixed time-frequency position, and the other is dynamic, that is, the time-frequency resource where the control channel is located can be changed. Every time it changes, an update instruction message needs to be sent so that the receiving end can accurately The time-frequency position receives control messages. [0003] In the above static control channel configuration method, the structure of the common subframe is as follows figure 1 A...

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Problems solved by technology

[0003] In the above static control channel configuration method, the structure of the common subframe is as follows figure 1 As shown, the control channel resources are located at the head of the subframe. For the same-frequency networking system, the positions of the downlink control channels between adjacent cells are the same. Therefore, this method will cause the interference problem of the control channels between cells, thus Affect system performance

[0004] In the above dynamic control channel configuration method, since the control information is placed completely dynamically, it is necessary to update the instruction control, which will consume a certain amount of signaling resources

With the application of mobile Internet, such as instant messaging (IM), microblog, interactive games, etc., as well as the need for data bearing of the Internet of Things, the overhead of control signaling will be relatively large, and congestion of control signaling may occur.

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