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Advance resource allocations for association state transitions for wireless LAN systems

A central controller, wireless local area network technology, applied in the direction of wireless communication, radio/inductive link selection arrangement, network topology, etc.

Inactive Publication Date: 2007-02-07
WI FI ONE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second factor is the added delay when resource requests are incorrectly assumed to have been sent successfully

Method used

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  • Advance resource allocations for association state transitions for wireless LAN systems
  • Advance resource allocations for association state transitions for wireless LAN systems
  • Advance resource allocations for association state transitions for wireless LAN systems

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Embodiment Construction

[0052] For purposes of illustration rather than limitation, specific details, such as specific architectures, interfaces, techniques, are set forth in the following description in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail. Additionally, in some of the figures, functional blocks are presented. Those skilled in the art appreciate that these functions can be implemented using individual hardware circuits, using software operating in conjunction with a suitably programmed digital microprocessor or general purpose computer, using application specific integrated circuits (ASICs), and / or using one or more digital signal proces...

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Abstract

A central controller (CC) (22) of a wireless local area network (LAN) (20), in conjunction with an association operation with a mobile terminal (24) and up on receiving from the mobile terminal (MT) a first control signal (CS1) of a sequence of control signals involved in the association operation, pre-reserves a MAC resource for transmission of at least a further control signal in the sequence. The MAC resource for the further control signal is pre-reserved prior to information for the further control signal being stored in a transmission buffer (58) of the mobile terminal. In essence, judging from the nature of the first control signal, the central controller (CC) anticipates eventuality of the further control signal and pre-reserves the MAC resource for the further control signal. The central controller (CC) pre-reserves the MAC resource to avoid transmission of a separate message to request a MAC resource for the further control signal. In fact, in a preferred embodiment, the central controller (CC) pre-reserves MAC resources for the remaining control signals in the sequence. The association operation for which the pre-reservation occurs can be, for example, an initial association scenario or a handover scenario in which the mobile terminal (MT) is handed over to the central controller (CC).

Description

technical field [0001] The present invention relates to wireless local area network (LAN) communications and, in particular, to resource allocation during associated state transitions such as initial association or handover. Background technique [0002] A wireless local area network (LAN) usually has multiple mobile terminals (MT) and an access point (AP). An access point is usually an interface unit that acts as an interface to a fixed network (ie a link from a wireless network to a wired network). In many applications, the purpose of the AP is primarily to manage the air interface [eg allocate Media Access Control (MAC) resources] and to make the MT connection as similar as possible to a normal cable connection. [0003] HIPERLAN (High Performance Wireless LAN) Type 2 (H2) is the new standard for wireless LAN systems. HIPERLAN Type 2 (H2) is described in: (1) ETSI TS 101761-1 V1.2.1 - HiperLAN Type 2 Data Link Control, Part 1, Basic Data Transfer Functions; and (2) ETSI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04Q7/38H04W28/26H04W72/04H04W74/00H04W84/12
CPCH04W74/00H04W28/26H04W72/04H04W84/12
Inventor J·林德斯科格L·阿梅哈格F·沃西伯格
Owner WI FI ONE