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Downlink message forwarding method and serving gateway (S-GW)

A message forwarding and service gateway technology, applied in network data management, electrical components, wireless communication, etc., can solve problems such as waste of resources, achieve the effects of avoiding waste of resources, reducing the number of forwarding times, and improving transmission efficiency

Active Publication Date: 2010-12-29
江苏金羿智芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides an improved downlink message forwarding method and a serving gateway to solve the problem that the source eNB and the source S-GW resources of the source eNB and the source S-GW are repeatedly processed downlink messages in the prior art. waste problem

Method used

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  • Downlink message forwarding method and serving gateway (S-GW)
  • Downlink message forwarding method and serving gateway (S-GW)
  • Downlink message forwarding method and serving gateway (S-GW)

Examples

Experimental program
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Effect test

Embodiment 1

[0053] In this embodiment, the target eNB and the source eNB belong to the same MME and S-GW, that is, this embodiment is S1 handover within the MME and S-GW.

[0054] Figure 4 It is a schematic diagram of the S-GW processing the data and signaling flow of the downlink message when performing S1 handover in this embodiment, as shown in Figure 4 As shown, in this embodiment, when S1 handover occurs, the handover signaling flow and image 3 Similar, the difference is that since the source MME is the same as the target MME, therefore, Figure 4 exist image 3 Message 2 and Message 5 are reduced on the basis of .

[0055] Figure 5 In this embodiment, after the source eNB sends a handover command message to the UE, the flow chart of data forwarding, such as Figure 5 As shown, the forwarding of data by the source eNB mainly includes the following steps:

[0056] Step 501, S1 handover occurs, and after the source eNB sends a handover command message, it starts forwarding me...

Embodiment 2

[0063] In this embodiment, the S1 handover within the MME and across the SGW is taken as an example for illustration.

[0064] Figure 6 It is a schematic diagram of the flow direction of data flow and signaling flow when performing S1 handover in this embodiment, as Figure 6 As shown, in this embodiment, the signaling flow and Figure 4 Basically the same, the data flow is from the source eNB to the source S-GW and then to the target S-GW, and finally reaches the target eNB.

[0065] Figure 7 In this embodiment, after the source eNB sends the handover command message to the UE, the flow chart of forwarding the data flow is as follows: Figure 7 As shown, in this embodiment, forwarding data by the source S-GW mainly includes the following steps:

[0066] Step 701, S1 handover occurs, and after the source eNB sends a handover command message, it starts to forward the message to the source S-GW through the backhaul tunnel between it and the source S-GW;

[0067] Step 702,...

Embodiment 3

[0073] In this embodiment, an S1 handover across MMEs and SGWs is taken as an example for illustration.

[0074] Figure 8 It is a schematic diagram of the flow direction of data flow and signaling flow when performing S1 handover in this embodiment, as Figure 8 As shown, in this embodiment, the signaling flow and image 3 Basically the same, the data flow is the same as Figure 6 resemblance.

[0075] Figure 9 In this embodiment, after the source eNB sends the handover command message to the UE, the flow chart of forwarding the data flow is as follows: Figure 9 As shown, in this embodiment, forwarding data by the source S-GW mainly includes the following steps:

[0076] Step 901, S1 handover occurs, and after the source eNB sends a handover command message, it starts to forward the received message that needs to be sent to the UE to the source S-GW through the backhaul tunnel between it and the source S-GW;

[0077] Step 902, after receiving the forwarding message se...

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Abstract

The invention discloses a downlink message forwarding method and a serving gateway (S-GW). The method comprises the following steps: in the switching process of user equipment from a source eNB to a target eNB, a source S-GW receives first packet data forwarded by the source eNB through a first back-propagation passage between the source eNB and the source S-GW, then caches a downlink message received from a PDN and prohibits transmitting the downlink message to the source eNB after the source eNB transmits a switching command message to the user equipment and before the user equipment is synchronized with a target cell; and the source S-GW forwards the cached downlink message to a target side through a target-side second back-propagation passage after receiving a message ending identifier transmitted by the source eNB through the first back-propagation passage. The invention can decrease the number of times of message forwarding and improve the transmission rate of the downlink message.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a downlink message forwarding method and a service gateway. Background technique [0002] In the evolved radio access network (Evolved UTRAN, referred to as E-UTRAN), the evolved base station (E-UTRAN NodeB, referred to as eNB) and the mobility management entity (Mobility Management Entity, referred to as MME) of the core network and the service Interfaces between gateways (Serving Gateway, S-GW for short) are as follows: figure 1 As shown, the interface between the MME or S-GW of the core network and the eNB is the S1 interface, and the interface between the eNBs is the X2 interface. During the handover process of User Equipment (UE), data packets can be forwarded through the X2 or S1 interface, and the X2 interface is preferred. When the X2 interface cannot be used to achieve forwarding, the S1 interface is used to forward data. [0003] At present, the 23.401 pr...

Claims

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Application Information

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IPC IPC(8): H04W8/12H04W36/02H04W36/08H04W88/16
CPCH04W36/02H04W36/12
Inventor 蔡威
Owner 江苏金羿智芯科技有限公司
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