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Hard handover (HHO) method and device for data service

A data service and hard handover technology, applied in the direction of electrical components, wireless communication, etc., can solve the problem of discarding data and achieve the effect of reducing the impact

Active Publication Date: 2013-01-02
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An embodiment of the present invention provides a hard handover method for data services to solve the technical problem in the prior art that data is discarded during the hard handover process due to the impact of the hard handover process on the upper layer data service

Method used

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  • Hard handover (HHO) method and device for data service
  • Hard handover (HHO) method and device for data service
  • Hard handover (HHO) method and device for data service

Examples

Experimental program
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Embodiment 1

[0018] This embodiment provides a hard handover method for data services. Such as figure 2 As shown, the method includes:

[0019] Step 201: receiving a hard handover trigger message from the network side;

[0020] This step is performed by Radio Resource Control (RRC, Radio Resource Control), and a hard handover trigger message from the network side is received through the Uu interface.

[0021] Step 202: Indicate the activation time, which is used to control the stop of the data service and the start of channel switching at the physical layer;

[0022] In this step, RRC indicates the activation time to the radio link control (RLC), which is used for RLC to stop sending data when the activation time arrives, and indicates the activation time to the physical layer (PHY), which is used for PHY to release when the activation time arrives. the original physical channel and establish a new physical channel. Or, the RRC indicates the activation time to the medium access contro...

Embodiment 2

[0030] This embodiment further describes in detail the hard handover method of the data service in the first embodiment by controlling the MAC to stop the data service. Such as image 3 As shown, the method includes:

[0031] Step 301: RRC receives a message from the Uu interface on the network side indicating to trigger a hard handover;

[0032] Step 302: RRC instructs the MAC to stop sending data when the activation time arrives, specifically by configuring the MAC layer to stop the uplink data transmission primitive, and bring the activation time Connection Frame Number (CFN, Connection Frame Number) in the primitive;

[0033] Step 303: The RRC sends the new cell physical channel configuration parameters to the PHY, instructing the PHY to use the new physical channel configuration parameters when the activation time arrives;

[0034] Step 304: MAC continues to send a data request to RLC to send data until the activation time arrives;

[0035] Step 305: When the activatio...

Embodiment 3

[0042] This embodiment further describes in detail the hard handover method of the data service in the first embodiment by controlling the RLC to stop the data service. Such as Figure 4 As shown, the method includes:

[0043] Step 401: RRC receives a message from the Uu interface on the network side indicating to trigger a hard handover;

[0044] Step 402: RRC instructs RLC to stop sending data when the activation time arrives, specifically by configuring the RLC layer Stop, and carrying the activation time CFN in the Stop primitive;

[0045]Step 403: The RRC sends the new cell physical channel configuration parameters to the PHY, instructing the PHY to use the new physical channel configuration parameters when the activation time arrives;

[0046] Step 404: RLC continues to send data until the activation time arrives;

[0047] Step 405: When the activation time arrives, the RLC stops sending data; the PHY releases the old physical channel, and uses the new physical channe...

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Abstract

The invention provides a hard handover (HHO) method and a device for data service, and the HHO method comprises the following steps: receiving a HHO trigger message from a network side; indicating the trigger time for controlling the beginning of stopping channel switch between data service and a physical layer; receiving the message synchronously completed by the physical layer; and indicating to restore the data service. The HHO device comprises a receiving unit for receiving the HHO trigger message from the network side and the message completed by the physical layer synchronously, a time indicating unit for indicating the trigger time to control the beginning of stopping channel switch between the data service and the physical layer, and a restoring indication unit for indicating to restore the data service. The embodiment of the invention can reduce the influence of the HHO process on upper data service so as to ensure that user data do not lose in the HHO process, data transmission can be restored as soon as possible after the HHO, and the condition that user data is discarded is avoided in the HHO process due to unnecessary reset of a wireless link by controlling the data service termination in the HHO process through the trigger time.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a hard handover method and device for data services. Background technique [0002] The data service in Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) is a common radio communication data bearing service, and the service is carried by the access layer (AS, Access Stratum), including Packet Data Convergence Protocol (PDCP , Packet Data Convergence Protocol), radio link control (RLC, Radio Link Control), media access control (MAC, Medium Access Control), physical layer (PHY, Physicai) and other modules. Service data is transmitted through user equipment (UE, User Equipment), B node (Node-B), radio network controller (RNC, Radio Network Controller), GPRS service node (SGSN, Serving GPRS Support Node), GPRS gateway support node (GGSN , GPRS Gateway Support Node) and other devices finally arrive at the server (Server). Af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/24
Inventor 刘恺石维洲
Owner HUAWEI DEVICE CO LTD