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Scheduling information acquisition method, terminal and baseband chip

A technology for dispatching information and obtaining methods, which is applied in wireless communication, electrical components, network planning, etc., and can solve problems such as channel occupancy time not exceeding 10ms, data transmission interruption, and longer data sending and receiving time

Inactive Publication Date: 2017-06-27
BAICELLS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For mobile communication systems using MulteFire technology, since multiple unlicensed frequency band devices need to coexist and work under the LBT mechanism, the MCOT (Maximum Channel OccupancyTime, maximum channel occupancy time) of a single unlicensed frequency band device after each access channel is subject to LBT Influenced by the mechanism, the channel is not always available for the unlicensed frequency band device. For example, the longest channel occupation time of the current Multefire device cannot exceed 10ms
Therefore, when performing coverage enhancement, it is necessary to consider the limitation of continuous transmission time, and it is impossible to occupy the channel for a long time for transmission
[0007] For the control channel, the terminal cannot know the specific data transmission parameters before decoding the scheduling information, which makes the data sending and receiving time longer, easily causing data transmission interruption, and unable to complete the transmission at one time within the maximum channel occupation time

Method used

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  • Scheduling information acquisition method, terminal and baseband chip
  • Scheduling information acquisition method, terminal and baseband chip
  • Scheduling information acquisition method, terminal and baseband chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 A flow chart of a method for obtaining scheduling information according to an embodiment of the present invention is shown.

[0037] Such as figure 1 As shown, the methods for obtaining scheduling information include:

[0038] Step 102: Determine the physical resource allocation size and resource location of the control channel according to the high-level signaling issued by the base station.

[0039]On the basis of the original preset primary aggregation level, a new advanced aggregation level is added. Optionally, the preset primary aggregation level is {2, 4, 8, 16}, and the preset advanced aggregation level includes {24 , one or more of 32, 40, 48, 56, 64}. For example, the preset primary aggregation levels may be {2, 4, 8, 16}, and the preset advanced aggregation levels may be {24, 32, 40, 48, 56}.

[0040] Step 104, according to the physical resource allocation size and resource location, according to the preset primary aggregation level and the prese...

Embodiment 2

[0043] On the basis of the steps shown in Embodiment 1, the preset primary aggregation levels may also be {2, 4, 8, 16}, and the preset advanced aggregation levels may be {24, 32, 40, 48, 56, 64}. When the acquired physical resource allocation size of the control channel is 2, 4, 8, or 16 PRBs (physical resource blocks, physical resource blocks), the number of possible candidate positions in the search space corresponding to the terminal is shown in Table 1 below.

[0044] Table 1

[0045] PRB L＝2 L＝4 L＝8 L＝16 L＝32 L＝24 L＝48 L＝56 L＝64 2 4 2 1 0 0 0 0 0 0 4 8 4 2 1 0 0 0 0 0 8 6 4 2 1 1 0 0 0 0 16 0 0 6 4 2 3 1 1 1

[0046] Of course, the number of possible candidate positions in the search space corresponding to the terminal is not limited to the situation shown in Table 1, and the following Table 2 may also be implemented.

[0047] Table 2

[0048] PRB L＝2 L＝4 L＝8 L＝16 L＝32 L＝24 L＝48...

Embodiment 3

[0050] In an implementation manner of the present invention, all preset aggregation levels may be used to perform blind detection of scheduling information at each corresponding candidate position, so as to ensure effective detection of scheduling information and avoid missed detection. In one embodiment, the possible number of repeated transmissions {r 1 , r 2 ,...,r N}, where r 1 2 N , the base station can configure the maximum number of repeated transmissions r of the control channel in each TTI max , when the user blindly checks the scheduling information, select no greater than r max Blind detection is performed in different corresponding search spaces for all possible repeated transmission times.

[0051] Such as figure 2 As shown, for r 1 , corresponding to r max / r 1 search spaces, and each search space repeatedly transmits r 1 Second-rate. Here, r max With base station configuration, it can be {r 1 , r 2 ,...,r N} one of the values.

[0052] In the se...

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Abstract

The invention provides a scheduling information acquisition method, a terminal and a baseband chip. The scheduling information acquisition method comprises the following steps: determining multiple candidate positions in a search space corresponding to the terminal according to the physical resource allocation size of a control channel, a preset primary aggregation level and a preset advanced aggregation level; and performing the blind detection of the scheduling information on multiple candidate positions. By use of the technical scheme provided by the invention, the coverage enhancement can be realized in one transmission time interval after adding the advanced aggregation level on the basis of the original preset primary aggregation level, and the success rate of data transmission in an unauthorized frequency band is greatly increased.

Description

[0001] 【Technical field】 [0002] The present invention relates to the technical field of communications, and in particular to a scheduling information acquisition method, a terminal and a baseband chip. [0003] 【Background technique】 [0004] Currently, the MulteFire technology is a wireless access technology that extends LTE (Long Term Evolution, Long Term Evolution) to unlicensed frequency bands. In this technology, carriers in unlicensed frequency bands can independently provide services without using licensed frequency band carriers. [0005] In order to allow multiple unlicensed frequency band devices (such as Wi-Fi devices) to fairly occupy unlicensed frequency band channels and avoid mutual interference between unlicensed frequency band devices, a carrier sense technology similar to Wi-Fi is introduced in the MF (MulteFire) physical layer The LBT (Listen Before Talk, Listen Before Talk) mechanism, when the base station or terminal monitors that the unlicensed frequency...

Claims

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Application Information

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IPC IPC(8): H04W16/26H04W72/04H04W72/12
CPCH04W16/26H04W72/53H04W72/20H04W72/535H04W72/23
Inventor 孙立新丁颖哲周明宇陈华敏
Owner BAICELLS TECH CO LTD
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