Apparatus and method for improved handover performance

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8787312
APP PUB NO 20110268088A1
SERIAL NO

13142670

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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There is provided a method in a first base (Node_B_S) station adapted to receive media access control layer packet data units (MAC-d; PDU 101, 102, 104, 105) from a radio network controller (RNC) relating to at least a traffic flow relating to a given user entity (UE_Q) and forwarding (MAC-hs/MAC-ehs) such packet data units to said user entity. The transmission to the given user entity is adapted to be potentially handed over to at least a second radio base station (Node B_T), the method being characterized in the following steps:—the first base station (Node_B_S) continuously updating (12, 33, 335, 41) at least a data structure (UNACK_MACD_CNT) relating to media access control layer packet data units (MAC-d PDU's) of a priority queue of the user entity, which packet data units are recently transmitted from a protocol layer (RLC) in the radio network controller (RNC RLC) whereby at least some of said packet data units may not be received by a corresponding protocol layer (RLC) in the user entity (UE_Q) yet,—the first base station, upon receiving a predetermined signal (UNACK_MACD_REQ (108)) from the radio network controller requesting the data structure, transmitting (41, 110) a current value of said data structure (UNACK_MACD_CNT) to the radio network controller (RNC). Also, a method for a radio network controller is provided and corresponding entities.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)164 83 STOCKHOLM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Almqvist, Dag Robert Edvin Molndal, SE 1 23
Lindskog, Jan Pixbo, SE 45 1175
Wallerius, Roger Savedalen, SE 10 215

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