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Method for transmitting control signaling

A technology of control signaling and transmission method, applied in the field of control signaling transmission, can solve the problems of frequent control signaling transmission, increased control signaling, difficult balance control, etc., and achieve the effect of alleviating the problem of control channel congestion

Inactive Publication Date: 2015-07-15
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the transmission of short data services, the amount of data per service is small, but the transmission of control signaling is relatively frequent
In the existing control signaling transmission, the video resource where the control channel is located is fixed, and the division of the physical wireless resource used by the control signaling and the physical wireless resource used for data transmission is based on the OFDM symbol. Therefore, congestion of the control signaling may occur. However, the wireless resources in the service data area may still be idle, and it is difficult to balance the physical wireless resources used by the control and service data areas.
[0004] At the same time, in the existing control signaling transmission, the time-frequency resource where the control channel is located is relatively fixed. Although it is convenient for the receiving end to obtain, the downlink control channel positions between adjacent cells are the same. In the same frequency network, the interference between the control channels is difficult. Elimination, while some UEs need better control channel interference coordination between cells, in order to obtain better system performance
[0005] Moreover, in the public OFDM / OFDMA system, for some special services and terminals, if the general control channel is still used for control signaling transmission, additional control signaling overhead is required, and the implementation complexity is higher when multiple services coexist.

Method used

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  • Method for transmitting control signaling
  • Method for transmitting control signaling
  • Method for transmitting control signaling

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] In this embodiment, the control signaling for the short data service is transmitted in the service data area. figure 1 It is a flow chart of the control signaling transmission method for the short data service in this embodiment. Such as figure 1 The method shown includes:

[0032] In step 101, the base station semi-persistently divides an area for transmitting short data service control signaling in the data service area, and notifies UEs under the base station by broadcasting or signaling.

[0033] When dividing the control signaling area in the data service area, time-frequency resources can be selected as required. Preferably, the control signaling for transmitting the short data service can be allocated on resources adjacent to the time-frequency resources where the existing general control channel is located, for example, transmitted on the time-domain adjacent resources of the existing general control channel The control signaling of the short data service, so...

Embodiment 2

[0048] In this embodiment, the control signaling for a specific UE is transmitted in the service data area, and the specific UE refers to a cell edge UE requiring strong interference coordination, for example, a UE entering a coordinated multi-point transmission (CoMP) area. image 3 It is a flowchart of a method for transmitting control signaling of a specific UE in this embodiment. Such as image 3 The method shown includes:

[0049] In step 301, the base station semi-persistently divides an area for transmitting control signaling of a specific UE in the data service area, and notifies all UEs under the base station by broadcasting or signaling.

[0050] Wherein, the method of dividing and allocating the control signaling area is the same as that in step 101 above, so it will not be repeated here.

[0051] Further, when dividing the area for specific UE control signaling, in order to further perform interference coordination, preferably, in the same coordinated multi-point...

Embodiment 3

[0058] In this embodiment, the control signaling for the special service in the public OFDM / OFDMA system is transmitted in the service data area, and the specific special service can be a specified type of service in a private network, such as a service in a private network such as public security and traffic police . Figure 4 It is a flow chart of the control signaling transmission method of the special service in this embodiment. Such as Figure 4 The method shown includes:

[0059] In step 401, the base station semi-persistently divides an area for transmitting special service control signaling in the data service area, and notifies all UEs under the base station by broadcasting or signaling.

[0060] Wherein, the manner of dividing the control signaling area and the manner of notification are the same as those in step 101 above, and will not be repeated here.

[0061] Step 402, the base station transmits the control signaling of the special service by using the semi-pe...

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Abstract

The invention provides a method for transmitting control signaling, comprising the following steps: a base station semi-persistently allocates an area for transmitting the specified control signaling in a data service area and informs UE (user equipment) through a broadcast or signaling, and the base station transmits the specified control signaling by using the area allocated semi-persistently. Due to the adoption of the method, the service data and the resource distribution of the control signaling can be balanced flexibly, the special control channel can be provided for the corresponding UE and service flexibly, and the coexistence of various services can be realized flexibly.

Description

technical field [0001] The invention relates to the control channel technology of the communication system, in particular to a method for sending control signaling. Background technique [0002] In the current wireless communication systems including OFDM / OFDMA, the time-frequency resources of the control channel are relatively fixed, which is convenient for the UE to obtain; there are also some designs that place the control information completely dynamically, so that the control information and service data can be fully mixed and transmitted. Dynamics also increase the complexity of signaling and computation complexity. [0003] In the existing OFDM / OFDMA system, the control channel design is suitable for relatively flexible data service data, but the signaling overhead is relatively large; and with the development of the mobile Internet, short data such as microblog, twitter, game interaction, and instant messages With the emergence of a large number of services, there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/12
Inventor 易三军
Owner POTEVIO INFORMATION TECH CO LTD