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Scheduling method, interception method and device on unlicensed frequency band

A technology of unlicensed frequency band and scheduling method, applied in the field of listening method and equipment, and scheduling method on unlicensed frequency band, can solve the problems of demodulation failure, busy channel, no transmission, etc., and achieve the improvement of effectiveness and reliability. Effect

Active Publication Date: 2021-12-14
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the existing scheduling mechanism will generate information that is not sent because the channel is busy on the unlicensed frequency band, resulting in demodulation failure, which needs to be solved urgently

Method used

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  • Scheduling method, interception method and device on unlicensed frequency band
  • Scheduling method, interception method and device on unlicensed frequency band
  • Scheduling method, interception method and device on unlicensed frequency band

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0075] In this example, resource interleaving (Interlace) is performed in units of LBT subbands. For example: Interlace in units of 20MHz. The gNB may add an indication field in the DCI to indicate which subbands of LBTs are scheduled. For example: for 80MHz BWP, the indication field can be 4 bits, "0" means unscheduled, "1" means scheduled, and "1100" means the first two 20MHz LBT subbands in 80MHz are scheduled. For each LBT subband, the scheduling information may be exactly the same, or different Interlaces may be scheduled on each subband. When the Interlace scheduled by each subband is different, it is necessary to extend the frequency domain resource assignment (Frequency domain resource assignment) domain so that it can indicate the frequency domain resource scheduling of multiple subbands.

[0076] The terminal equipment performs LBT on the scheduled LBT subbands respectively, and performs uplink transmission according to the scheduling when the channel is detected t...

example 2

[0078] In this example, resources can be interlace and scheduled according to BWP or system bandwidth. The terminal device can perform LBT on the resource corresponding to the BWP or the system bandwidth according to the LBT subband, and decide whether to perform uplink transmission on the corresponding resource according to the LBT result. Wherein, the transmission on each LBT subband may be completely repeated according to the subband, or different redundancy versions (Redundancy Version, RV) may be sent on each LBT subband.

example 3

[0080]Since the gNB does not know the channel access state of the terminal device, the gNB does not know which LBT subbands the terminal device performs uplink transmission on. The terminal device may transmit uplink control information (Uplink Control Information, UCI) on a fixed resource element (ResourceElement, RE) of each LBT subband, indicating the LBT subband that is actually transmitted or not transmitted. For example: UCI has a total of x bits, and each bit corresponds to the actual transmission status of a subband, "1" means that there is data transmission, and "0" means that there is no data transmission, or vice versa. Assuming x=4, then "1001" indicates that the subbands of the first and fourth LBTs have data transmission, and the subbands of the other two LBTs have no data transmission.

[0081] Alternatively, the gNB may also perform demodulation reference signal (Demodulation Reference Signal, DMRS) detection on each LBT subband, and determine whether the termi...

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Abstract

Embodiments of the present invention provide a scheduling method, listening method, and device on an unlicensed frequency band. The scheduling method includes: scheduling terminal equipment in one or more first subbands of the unlicensed frequency band; Schedule terminal devices on a BWP or system bandwidth. In the embodiment of the present invention, the terminal device can flexibly use unlicensed frequency band resources, and the network device can correctly demodulate the transmitted information, thereby improving communication effectiveness and reliability.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular to a scheduling method, interception method and device on an unlicensed frequency band (unlicensed band). Background technique [0002] In the future fifth generation (5th Generation, 5G) communication system, or called New Radio (New Radio, NR) system, the unlicensed frequency band can be used as a supplement to the licensed frequency band (licensed band) to help operators implement services. expansion. In order to be consistent with NR deployment and maximize NR-based unlicensed access as much as possible, the unlicensed frequency band can work in the 5GHz, 37GHz and 60GHz frequency bands. The large bandwidth (80MHz or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of network equipment and terminal equipment. Since the unlicensed frequency band is shared by multiple Radio Access Technologies (RATs), such as:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00H04W72/12H04W74/08
CPCH04L5/0098H04L1/0071H04W74/0808H04W72/20H04L1/00H04L5/00H04W16/14H04L27/2603H04W72/0453H04L27/2613H04W72/1215
Inventor 姜蕾鲁智潘学明
Owner VIVO MOBILE COMM CO LTD