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Radio bearer management at a donor base station in a wireless network with relays

A wireless bearer and supply-side technology, applied in network traffic/resource management, connection management, network topology, etc., can solve problems such as unobservable capacity of Uu interface and congestion of DeNBUn interface

Inactive Publication Date: 2012-12-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, when the condition of the backhaul link between the relay node and the DeNB deteriorates or when too many Uu bearers have been allowed on the backhaul link, the DeNB may suffer from congestion
At the same time, no capacity problem is observed on the Uu interface between the relay node and the UE served by the relay node

Method used

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  • Radio bearer management at a donor base station in a wireless network with relays
  • Radio bearer management at a donor base station in a wireless network with relays
  • Radio bearer management at a donor base station in a wireless network with relays

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Embodiment Construction

[0025] Certain aspects of the present disclosure provide apparatuses and techniques for managing radio bearers in a wireless communication network having relay nodes and supplier base stations. In some networks, such as LTE networks with relay nodes, the relay node can serve multiple UE packet streams. The Uu radio bearer used for the UE packet flow between the relay node and the UE it serves is carried by the Un data radio bearer used for the relay packet flow between the relay node and its supplier base station.

[0026] As described above, when the backhaul link between the relay node and the donor base station deteriorates or when too many UE flows are allowed on the backhaul link, the donor base station may suffer congestion on its Un interface. When this happens, the donor base station is expected to release the UE context or part of the Uu bearer of the UE served under the relay node. However, although the supplier base station is visible to the Uu bearer under the LTE re...

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Abstract

Certain aspects of the present disclosure provide techniques and apparatuses for managing radio bearers during traffic congestion in a wireless communications networks having relays. According to certain aspects, a donor base station may detect traffic congestion on a Un radio bearer configured to interface between the relay node and the donor base station, where the Un radio bearer carries a plurality of Uu bears configured o interface between the relay node and at least one user equipment (UE). According to certain aspects, the donor base station may take one or more actions to trigger removal of at least one of the Uu bearers carried on the Un bearer.

Description

[0001] Claim priority based on 35U.S.C.§119 [0002] This patent application claims to protect the serial number 61 / 317,632 filed on March 25, 2010, titled "A method and device for carrying out bearer management at an evolved node B of a long-term evolution system with relay" The rights and interests of the US provisional patent application, which has been assigned to the assignee of this application, is expressly incorporated herein by reference. Technical field [0003] In summary, certain aspects of the present disclosure relate to wireless communication systems, and in particular, to techniques for managing wireless bearers in telecommunications networks with relays. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice and data. These systems may be multiple-access systems that support communication with multiple users by sharing available system resources (eg, bandwidth, transmit power...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W84/047H04W76/064H04B7/2606H04W72/0486H04W28/18H04W28/24H04W76/34H04W72/52H04W88/08H04W28/0827H04W28/0289
Inventor X·黄F·乌卢皮纳尔
Owner QUALCOMM INC