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System for permitting control of the purging of a node b by the serving radio network controller

A controller and node technology, applied in the field of radio communication, can solve problems such as delay and deterioration of data buffer issues

Inactive Publication Date: 2005-08-10
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Note that this example only reflects 10 PDUs, but in normal operation hundreds of PDUs can be scheduled ahead of retransmitted data PDUs, which exacerbates transmission latency and data buffering issues

Method used

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  • System for permitting control of the purging of a node b by the serving radio network controller
  • System for permitting control of the purging of a node b by the serving radio network controller
  • System for permitting control of the purging of a node b by the serving radio network controller

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Embodiment Construction

[0020] Preferred embodiments of the invention have been described with reference to the drawings, wherein like numerals indicate like components.

[0021] Referring to FIG. 3A, a method 10 of the RNC controlling the purge function within the Node B according to the present invention is shown. The RNC waits for the clearing "trigger" event (step 12) to occur with the particular UE, for example this trigger event may include a serving HS-DSCH cell change, an RLC reset or an RLC status report from the UE Generated to require retransmission of certain PDUs. Although these are three examples of triggering events, those skilled in the art will clearly recognize that any function can be used as a triggering event to clear the Node B if clearing of the Node B would yield benefits to system operation. Therefore, the method and system of the present invention described later should not be limited only to the three listed triggering events.

[0022] Depending on the purge trigger event...

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Abstract

A system and method are disclosed for managing packet data units (PDUs) received by a Node B from a radio network controller (RNC) and stored in a buffer of the Node B while awaiting transmission to a user equipment (UE). A purge triggering event with respect to PDUs associated with the UE is detected at the RNC and the RNC transmits a purge message to the Node B requesting a purge of at least a portion of the PDUs associated with the UE from the Node B's buffer. The requested PDUs are then deleted from the Node B's buffer.

Description

technical field [0001] The present invention relates to the field of radio communications, and more particularly, the present invention relates to systems and methods that allow clearing control of Node Bs by providing slave radio network controllers. Background technique [0002] The third generation (3G) Universal Terrestrial Radio Access Network (UTRAN) includes a number of radio network controllers (RNCs), each coupled to one or more Node Bs, each Node B including one or more service A base station for one or more cells, the Node B necessarily communicates with one or more user equipments (UEs). [0003] A 3G system that includes frequency division duplex (FDD) and time division duplex (TDD) modes typically uses the RNC to distribute (ie, buffer and schedule) data transmissions to UEs. However, for high-speed channels of 3G cellular systems, data is distributed by the Node B. For example, one of these high speed channels is the High Speed ​​Downlink Shared Channel (HS-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L12/46H04L47/30H04L47/32H04W28/14H04W36/02H04W52/00H04W88/08H04W88/12
CPCH04W28/14H04L47/32H04L12/4633H04L47/30H04W88/08H04L47/10H04W36/02H04W28/12H04L47/34H04L12/2856H04W88/12H04L47/14H04W8/02H04W72/23H04L1/1809H04L2001/0097H04W28/0231H04W28/0247H04L1/1607H04L43/065H04L49/90H04W8/04H04W72/20H04W88/02
Inventor 史蒂芬·E·泰利赵怡如詹姆斯·M·米勒
Owner INTERDIGITAL TECH CORP