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Relay network flow control method

A flow control and relay network technology, applied in the direction of network flow/resource management, electrical components, wireless communication, etc., can solve the problem of inability to know data packets, achieve timely and effective flow control, improve utilization, and avoid waste. Effect

Inactive Publication Date: 2013-11-20
BEIJING RED SEA TECH
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Problems solved by technology

[0008] In the current four relay protocol structures of LTE-A, the DeNB of options 1 and 3 transparently transmits the data packets of the UE under the RN, and it cannot know which UE the currently transmitted data packet belongs to, so it is performed at the DeNB. When the flow control of the Un interface cannot be performed for UE or UE EPS bearer, only the radio bearer (Un RB) of the Un interface or the entire RN can be controlled

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Embodiment Construction

[0028] A relay network flow control method, in which the RN analyzes the link quality information fed back by the UE in combination with the status of its own buffer area (the feedback information can be carried in the uplink data packet of the UE, or can be directly sent to the RN in the form of signaling) to obtain Know the effective transmission rate of the Uu interface link, compare this rate with the rate of the Un interface, and confirm whether the two match. If there is a mismatch and the continuation of this state will cause congestion or low link utilization, it needs to be alleviated by means of flow control. At this time, the RN obtains an appropriate rate value based on the analysis to guide the UE's S-GW / P-GW node to perform flow control, change the rate at which UE data packets are sent, and match the rates of the Uu and Un interfaces.

[0029] In the foregoing, the reason why the data packets of the UE continue to accumulate at the RN is that the rate at which t...

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Abstract

The invention discloses a relay network flow control method and relates to the technical field of wireless resource management. In the prior art, the defects of resource waste, incapacity of accurately carrying out flow control and the like exist. In the invention, the relay network flow control method comprises the following steps that: a relay node analyzes quality information of a user-relay interface link, which is fed back by user equipment, by combining the state of a relay node cache region to acquire the effective transmitting speed of the user-relay interface link, and compares the effective transmitting speed with the speed of a relay-base station interface to determine whether to use the flow control; and if the usage of the flow control is determined, the relay node performs analysis to obtain a transmitting speed value suitable for the relay-base station interface according to the requirement of the effectively transmitting speed of the user-relay interface link and sends a flow control request command to a service gateway / grouped data gateway of the user equipment. By the relay network flow control method, the flow control is performed accurately and timely, the wireless channel utilization rate is improved, and the resource waste is avoided.

Description

technical field [0001] The present invention relates to the fourth generation of mobile communication technology, belongs to the technical field of wireless resource management, utilizes S-GW / P-GW (Serving Gateway / PDN Gateway, service gateway / packet data gateway) of UE (User Equipment, user equipment) to carry out UE Flow control of data packets (hereinafter referred to as flow control) avoids waste of wireless resources. Background technique [0002] Mobile communication has developed to the present stage and has become one of the hot technologies with the greatest potential in the field of communication. It also faces many problems, such as spectrum resource shortage, limited coverage and system capacity, increasing user demands, and so on. In response to the challenge, in March 2008, the ITU (International Telecommunication Union) issued a circular to solicit 4G (fourth generation mobile communication technology) candidate technology proposals from all members, officiall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10
Inventor 朱元萍曾媛徐景杨馨张晨璐杜婷
Owner BEIJING RED SEA TECH
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