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Method executed by user equipment and user equipment

A technology for user equipment and small data transmission, applied in advanced technology, power management, electrical components, etc., can solve problems such as physical resources cannot meet RRC configuration, data cannot be sent, signaling overhead increases power consumption, etc., to improve communication efficiency And the effect of reliability, avoiding signaling overhead, and reducing power consumption

Pending Publication Date: 2021-10-12
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Then although the UE resumes the transmission of the DRB, the data arriving from the DRB cannot be sent on the cell that currently provides small data transmission because the physical resources of the lower layer cannot meet the existing RRC configuration.
In order to send data, the UE has to enter the connected state again, which brings additional signaling overhead and increases power consumption

Method used

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  • Method executed by user equipment and user equipment
  • Method executed by user equipment and user equipment
  • Method executed by user equipment and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Define the default or default RLC bearer configuration (default RLC-BearerConfig). The configuration information element (information element, IE) includes at least the following parameters or fields. The so-called field refers to a single Content (individual content), an information element can contain multiple fields.

[0052] -allowedServingCells, this field is set to be empty (empty), or the default state, or the non-existent (not present) state

[0053] -allowedSCS-List, this field is set to be empty (empty), or the default state, or the non-existent (not present) state

[0054] The above configuration method enables the DRB using the above default RLC bearer configuration not to be restricted by allowedServingCells and allowedSCS-List, and can work normally in a serving cell that provides small data transmission.

[0055] Define the default or default PDCP configuration (default PDCP config), which includes at least the following parameters or fields,

[0056] -...

Embodiment 2

[0066] The difference from Embodiment 1 is that the UE does not restore all DRBs, but only restores the DRBs adopting the small data transmission scheme.

[0067] The so-called "DRB adopting the small data transmission scheme" is a kind of proprietary DRB, which can be one or more.

[0068] The RRC configuration information received by the UE in the connected state may include DRB configuration information, and the DRB configuration information indicates that the DRB can be used for small data transmission. Such indication information may be associated with the ID (drb-Identity) of the DRB, or may be associated with the logical channel ID,

[0069] Specifically, such indication information can be added in RLC-BearerConfig. Since RLC-BearerConfig also includes logicalChannelIdentity and drb-Identity, it can be considered that such indication information is associated with the logical channel ID or the ID of the DRB. couplet.

[0070] When the RRC connection recovery process i...

Embodiment 3

[0073] The UE sends request information to the base station or the network side, requesting resource configuration for small data transmission, or requesting execution of small data transmission, etc. The request message carries at least the relevant information of the DRB, such as drb-Identity, or the information of the logical channel associated with the DRB, such as the logical channel ID. The DRB carried in the request information is a DRB used for small data transmission in an inactive state.

[0074] In one case, the base station or the network side fully accepts the UE's request, then it can be considered that all the DRBs indicated by the UE in the request information can be used for small data transmission.

[0075] In another case, the base station or the network side partially accepts the UE's request, and can carry DRB information, such as drb-Identity, in the response information to the request message, then the DRB indicated in the response information can be use...

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PUM

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Abstract

The invention provides a method executed by user equipment and the user equipment. The method executed by the user equipment comprises the following steps: the user equipment triggers a radio resource control (RRC) connection resume process under the condition that the user equipment is in an inactive state and needs to carry out small data transmission; and in the RRC connection resume process, the user equipment adopts predefined default configuration for a data radio bearer DRB, and resumes other configurations except the default configuration in the RRC configuration for the DRB. Therefore, when the user equipment is in the inactive state and small data transmission needs to be carried out, extra signaling overhead can be avoided, power consumption can be reduced, and therefore the communication efficiency and reliability of a wireless communication system can be improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, the present invention relates to a method executed by user equipment and a corresponding base station and user equipment. Background technique [0002] In order to shorten the transmission delay and save the signaling overhead, the UE entering the RRC INACTIVE STATE (RRC INACTIVE STATE) can send a transmission block ( Transport Block). This transmission method can be called PUR transmission. It is also possible to send a transmission block carrying user data in message 3 or message A during the random access process. Both of these methods can be called small data transfers. [0003] In order to enable the UE to perform data transmission in the inactive state, the UE first needs to resume the DRB (resumeDRB). The UE restores (restores) the RRC configuration (restore the RRCconfiguration from the stored UE AS context) and restores the PDCP state (Re...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W72/04H04W76/27H04W76/28
CPCH04W52/0216H04W76/27H04W76/28H04W72/21Y02D30/70
Inventor 张崇铭刘仁茂肖芳英
Owner SHARP KK