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Accessing a communication channel by multiple user devices at the same time

A technology for user equipment and communication channels, applied in wireless communication, transmission path sub-channel allocation, signaling allocation, etc., can solve the problem of being unable to determine that the user equipment has not received or successfully decoded, cannot successfully complete the two-step RACH process, and the base station cannot reset Pass MsgB and other issues

Pending Publication Date: 2021-08-13
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the base station cannot determine from the HARQ ACK which user equipment received the MAC PDU
Therefore, if one of the UEs sends a HARQ ACK and the other UE does not receive and successfully decode the HARQ transmission, the base station may not be able to determine that the other UE did not receive or successfully decode the HARQ transmission
Therefore, the base station cannot retransmit MsgB to the other user equipment, and the other user equipment may not be able to successfully complete the two-step RACH procedure

Method used

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  • Accessing a communication channel by multiple user devices at the same time
  • Accessing a communication channel by multiple user devices at the same time
  • Accessing a communication channel by multiple user devices at the same time

Examples

Experimental program
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Embodiment Construction

[0032] figure 1 An example wireless communication network 100 is depicted in which devices such as base stations and user equipment (also referred to as user equipment or UE) communicate using channel access procedures.

[0033] The wireless communication network 100 in the example configuration includes a plurality of UEs 102, 106, which may be any suitable devices capable of wireless communication (as discussed further below). The wireless communication network 100 also includes a 5G New Radio (NR) base station 104 connected to a CN 107 of Core Network (CN) type 5GC. Thus, the 5G NR base station 104 operates as a gNodeB (gNB). However, in other embodiments, the wireless communication network 100 may include one or more base stations operating according to a type of radio access technology (RAT) other than NR, and these base stations may be connected to CNs of other CN types, Or be operated in standalone mode without connection to any CN. Thus, a device operating using any...

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PUM

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Abstract

Granting access to a communication channel for several user devices by a base station includes receiving, from at least a first and second user device, at least a first request to access the communication channel and a second request to access the communication channel (1202), the first request including a first random access preamble and a first payload, and the second request including a second random access preamble and a second payload, and transmitting, to at least the first and second user devices, a response message including at least a first control channel resource assignment configuring at least a first control channel resource for the at least the first user device to transmit an acknowledgement of the response message (1208).

Description

technical field [0001] The present disclosure relates to wireless communications, and more particularly, to synchronizing wireless communications during channel access. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this Background section, the work of the presently named inventors and aspects of the description that may not have qualified as prior art at the time of filing are neither express nor implied with respect to the present disclosure. recognized as prior art. [0003] To synchronize communications over the radio interface in the unlicensed portion of the radio spectrum, user equipment (referred to as user equipment or "UE") and base stations may use, for example, Random Access Channel (RACH) procedures. According to the four-step RACH procedure, (1) the user equipment sends a random access preamble (“Msg1”); (2) the base station sends a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/004H04W74/0833H04W72/23H04L1/1812H04L5/0053H04W74/0841H04W80/02
Inventor F.吴周高鹏
Owner GOOGLE LLC