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LAA method and LAA device of wireless communication

A unique, channel technology, applied in the field of LAA and devices in wireless communication, can solve the problem that the licensed spectrum is difficult to meet the demand of traffic, and achieve the effect of reducing the probability of false alarm and improving the transmission efficiency

Active Publication Date: 2017-07-18
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional 3GPP (3rd Generation Partner Project, 3rd Generation Partnership Project) LTE system, data transmission can only occur on the licensed spectrum. However, with the rapid increase of traffic, especially in some urban areas, the licensed spectrum may be difficult Meet business needs

Method used

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  • LAA method and LAA device of wireless communication
  • LAA method and LAA device of wireless communication
  • LAA method and LAA device of wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] Embodiment 1 illustrates the flow chart of sending signaling on the LAA carrier, as shown in the attached figure 1 shown. attached figure 1 In , the serving cell of UE U2 is maintained by base station N1, and the steps identified in blocks F1 and F2 are optional steps, respectively.

[0154] For the base station N1, in step S11, high-layer signaling is sent, and the high-layer signaling indicates K carriers. The UCI related to the target carrier can be transmitted on the K carriers.

[0155] Where K is a positive integer greater than 1.

[0156] For UE U2, in step S21, high layer signaling is received, and K carriers are determined. The UCI related to the target carrier can be transmitted on the K carriers.

[0157] For UE U2, in step S23, the first information is sent on the first carrier. Wherein, the first carrier is one of the K carriers, the first information includes at least one of {the first HARQ-ACK, the first CSI}, and the first HARQ-ACK indicates transm...

Embodiment 2

[0170] Embodiment 2 illustrates a schematic diagram of delayed sending of the first information, as shown in the attached figure 2 shown. attached figure 2 In , the squares filled with slashes identify the time-frequency resources occupied by downlink transmission blocks, the squares filled with crossed lines identify time-frequency resources that are determined to be unavailable according to CCA inspection, and the squares filled with thick lines indicate that they are determined according to CCA inspection Available time-frequency resources.

[0171] In Embodiment 2, the target carrier in the present invention is carrier #1, and the LAA carrier set in the present invention includes carriers {#1, . . . , #K1}, where K1 is a positive integer not greater than K. The first information includes the first HARQ-ACK.

[0172] The downlink transport block corresponding to the first HARQ-ACK is transmitted in the subframe #(n-p-r+1) - as indicated by the slash. If there are avai...

Embodiment 3

[0180] Embodiment 3 illustrates a schematic diagram of HARQ-ACK bundling, as shown in the attached image 3 shown. attached image 3 , the squares filled with slashes indicate the time-frequency resources occupied by the downlink transmission block, the squares filled with backslashes indicate the time-frequency resources occupied by the first HARQ-ACK, and the squares filled with thick lines indicate the time-frequency resources that are checked by the CCA Determine available time-frequency resources.

[0181] In Embodiment 3, the target carrier in the present invention is carrier #1, and the LAA carrier set in the present invention includes carriers {#1, . . . , #K1}, where K1 is a positive integer not greater than K. The first information includes the first HARQ-ACK.

[0182] The downlink transmission block corresponding to the first HARQ-ACK is transmitted in the second time window, the second time window includes multiple subframes, and the last subframe of the second ...

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Abstract

The invention discloses an LAA method and an LAA device of wireless communication. UE is used to receive high-level signaling, and K carriers are determined. First information is transmitted on a first carrier. UCI related to a target carrier can be transmitted on the K carriers, and K is a positive integer greater than one. The first carrier is one of the K carriers, and the first information comprises at least one of first HARQ-ACK and first CSI. The first HARQ-ACK is used to indicate whether a transmission block on the target carrier is correctly decoded, and the first CSI aims at the target carrier. The stability of the HARQ-ACK transmission is guaranteed, and consumption of uplink resources of authorized carriers is reduced, and integrated frequency spectrum efficiency of a system is improved.

Description

technical field [0001] The present invention relates to a scheme for communicating on multiple carriers in a wireless communication system, in particular to a communication method and device for sending uplink information on an unlicensed spectrum (Unlicensed Spectrum). Background technique [0002] In the traditional 3GPP (3rd Generation Partner Project, 3rd Generation Partnership Project) LTE system, data transmission can only occur on the licensed spectrum. However, with the rapid increase of traffic, especially in some urban areas, the licensed spectrum may be difficult Meet the needs of business volume. The 62nd plenary meeting of 3GPP RAN discussed a new research topic, that is, the research on unlicensed spectrum synthesis (RP-132085), the main purpose of which is to study the Non-standalone (non-independent) deployment of LTE on unlicensed spectrum, the so-called Non-standalone means that the communication on the unlicensed spectrum should be associated with the ser...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/18H04W72/12H04W72/14H04L5/00
CPCH04L1/0693H04L1/1806H04L5/0055H04W72/121H04W72/1221H04W72/1268H04W72/52H04W72/21H04W72/23
Inventor 蒋琦
Owner SHANGHAI LANGBO COMM TECH CO LTD
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