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Downlink control information transmission method, device and system

A technology of control information and transmission method, applied in the communication field, can solve the problem that the channel control information of the downlink control channel cannot be guaranteed to be correctly received by the user equipment, the downlink control channel resources of the air interface cannot be saved, and the user equipment cannot be guaranteed to correctly receive the downlink control channel channel. Control information, etc.

Active Publication Date: 2014-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first method can save the channel resources of the air interface downlink control channel, but when the user equipment moves fast or when the user equipment is at the edge of the cell, it cannot make the user equipment obtain a cell with good enough signal quality, and cannot guarantee that the user equipment can receive the signal correctly. Channel control information of the downlink control channel
The second method can ensure that high-speed user equipment obtains better-quality cell signals, but for slow-speed user equipment or user equipment that uses joint reception and transmission at the center of the cell, a cell with better channel quality can always be found, without the need for every All the coordinated cells send the downlink control channel for the user equipment, which can ensure that the user equipment can correctly receive the channel control information of the downlink control channel, which causes a waste of channel resources of the air interface downlink control channel
[0008] The above two methods cannot ensure that the user equipment can correctly receive the channel control information in the downlink control channel when saving the air interface downlink control channel resources; when it can ensure that the user equipment can correctly receive the channel control information in the downlink control channel Save air interface downlink control channel resources

Method used

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  • Downlink control information transmission method, device and system
  • Downlink control information transmission method, device and system
  • Downlink control information transmission method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] An embodiment of the present invention provides a downlink control information transmission system, such as figure 1 As shown, the system includes: a network side device 11 and a user equipment 12 .

[0049]The network-side device 11 is configured to determine the receiving mode information of the user equipment control channel, and send the determined receiving mode information of the user equipment control channel to the user equipment, so as to instruct the user equipment to start from the corresponding receiving mode information of the user equipment The downlink control information is received in the control channel of the cell.

[0050] The user equipment 12 is configured to receive receiving mode information of a user equipment control channel; and receive downlink control information from a control channel of a cell corresponding to the receiving mode information.

[0051] An embodiment of the present invention provides a downlink control information transmissi...

Embodiment 2

[0065] An embodiment of the present invention provides a downlink control information transmission system, such as Figure 5 As shown, the system includes: a network side device 51 and a user equipment 52 .

[0066] The network side device 51 is used to determine the reception mode of the user equipment control channel according to the current speed of the user equipment or the quality of the user equipment; after the reception mode of the user equipment control channel is determined, the network side device 51 will determine the The receiving mode is sent to the user equipment through a downlink control channel, so as to instruct the user equipment to receive downlink control information from the control channel of the cell corresponding to the receiving mode. Wherein, when the user equipment receives the downlink control information from the control channel of the cell, it generally receives the downlink control information from the downlink control channel of the cell.

[...

Embodiment 3

[0105] An embodiment of the present invention provides a downlink control information transmission system, such as Figure 10 As shown, the system includes: a network side device 1001 and a user equipment 1002 .

[0106] The network side device 1001 is used to determine the receiving mode of the user equipment control channel according to the current speed of the user equipment or the quality of the user equipment; after the network side device determines the receiving mode of the user equipment control channel, the network The side device 1001 carries the information element containing the user equipment control channel reception mode and the cell identifier corresponding to the reception mode for sending downlink control information for the user equipment to the user equipment in high layer signaling.

[0107] The user equipment 1002 is used to obtain the receiving mode of the user equipment control channel sent by high-level signaling, and after the receiving mode of the us...

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Abstract

The embodiment of the invention discloses a downlink control information transmission method, device and system, which relate to a network communication technology and solve the problems of channel resource waste of an empty-port downlink control channel and incapability of correctly receiving the control information in the downlink control channel by user equipment. The downlink control information transmission method comprises the following steps: determining the receiving-mode information of the control channel of the user equipment by a network side, and sending the determined receiving-mode information to the user equipment; receiving the receiving-mode information of the control channel of the user equipment by the user equipment, and receiving the downlink control information in the control channel of a district, corresponding to the receiving-mode information of the control channel of the user equipment. The embodiment is mainly used in the communication process of heterogeneous networks, so that the channel resource of the empty-port downlink control channel is reasonably utilized, and the user equipment can be ensured to correctly receive the channel control information in the downlink control channel.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a downlink control information transmission method, device and system. Background technique [0002] In a wireless communication system, a coordinated multi-point transmission (CoMP, Coordinated Multi-Point transmission) technology is an important means to improve the overall performance of a cell and the performance of users at the cell edge. In the CoMP system, the network nodes include eNodeB (evolved NodeB, evolved base station) and at least one AP (Access Point, access point). Multiple APs can cooperate to transmit and receive UE data. These coordinated APs can come from the same eNodeB, or Can be from different eNodeBs. The relationship between an AP and a cell in the traditional sense may be that one cell contains one AP, or one cell contains multiple APs. [0003] In the LTE system, the physical layer obtains data by demodulating corresponding time-fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/12H04W72/14
Inventor 宋巍巍于映辉任晓涛
Owner HUAWEI TECH CO LTD