Method for Selecting Controller in Network and Station Device

Patent metadata

Field	Value
Publication number	US-2016007277-A1
Application number	US-201514853762-A
Country	US
Kind code	A1
Filing date	Sep 14, 2015
Priority date	Mar 15, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

The present invention provides a method for selecting a network controller and a station device. Supported channel width sets of multiple station STA devices are acquired; a PCP factor of the each STA device is generated according to a supported channel width set and an acquired directional multi-gigabit DMG capability information element of the each STA device, where the PCP factor includes the supported channel width set; a STA device with a largest PCP factor is selected as a PCP. Using the method for selecting a PCP and the STA device provided in the present invention can improve reliability of a wireless local area network WLAN.

First claim

What is claimed is:

1 . A method for selecting a network controller, comprising:
acquiring supported channel width sets of multiple station (STA) devices; generating a personal basic service set (PBSS) control point (PCP) factor of each STA device of the multiple STA devices according to a supported channel width set and an acquired directional multi-gigabit (DMG) capability information element of each STA device, wherein the PCP factor comprises the supported channel width set; and selecting an STA device with a largest PCP factor from the multiple STA devices as the network controller.

2 . The method according to claim 1 , wherein the acquiring supported channel width sets of multiple STA devices comprises performing at least one of:
acquiring DMG capability information elements of the multiple STA devices, wherein the DMG capability information elements comprise DMG STA capability information and DMG PCP or access point (PCP/AP) capability information, wherein the DMG STA capability information or the DMG PCP/AP capability information comprises the supported channel width sets; or acquiring country information elements or supported operating classes information elements of the multiple STA devices, and acquiring the supported channel width sets according to channel spacing fields and channel starting frequency fields in at least one of the country information elements or the supported operating classes information elements.

3 . The method according to claim 1 , wherein the acquired DMG capability information element comprises DMG STA capability information and DMG PCP/AP capability information;
wherein the DMG STA capability information comprises information about a total quantity of sectors; wherein the DMG PCP/AP capability information comprises power source information, decentralized PCP/AP cluster information, time division data transfer interval (TDDTI) information, pseudo static allocation information, and information about a maximum quantity of associated STAs; and wherein the generating the PCP factor of each STA device according to a supported channel width set and an acquired DMG capability information element of the each STA device comprises:
acquiring the information about the total quantity of sectors, the power source information, the decentralized PCP/AP cluster information, the TDDTI information, the pseudo static allocation information, and the information about the maximum quantity of associated STAs of the each STA device according to the DMG capability information element of the each STA device; and
sorting the information about the total quantity of sectors, the power source information, the decentralized PCP/AP cluster information, the TDDTI information, the pseudo static allocation information, the information about the maximum quantity of associated STAs, and the supported channel width set in a preset order, to generate the PCP factor of the each STA device.

4 . The method according to claim 3 , wherein the sorting the information in the preset order comprises performing at least one of:
sorting, the following in an order from a most significant bit to a less significant bit: the power source information, the decentralized PCP/AP cluster information, the supported channel width set, the TDDTI information, the pseudo static allocation information, the information about the total quantity of sectors, and the information about the maximum quantity of associated STAs; or sorting, the following in an order from a most significant bit to a less significant bit: the power source information, the supported channel width set, the decentralized PCP/AP cluster information, the TDDTI information, the pseudo static allocation information, the information about the total quantity of sectors, and the information about the maximum quantity of associated STAs.

5 . The method according to claim 1 , wherein the supported channel width set comprises one or more values that comprise at least one of a first value, a second value, a third value, a fourth value, a fifth value, a sixth value or a seventh value, wherein the first value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz, wherein the second value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, wherein the third value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz, wherein the fourth value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz and a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, wherein the fifth value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz and a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz and 2.16 GHz, wherein the sixth value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz and a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, 2.16 GHz, and 540 MHz, and wherein the seventh value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz and a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, 2.16 GHz, 540 MHz, and 270 MHz; or
one or more values that comprise at least one a first value, a second value, a third value or a fourth value, wherein the first value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz, wherein the second value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz and 2.16 GHz, wherein the third value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz, 2.16 GHz, and 4.32 GHz, and wherein the fourth value is used to indicate that the STA supports a channel whose frequency band is 60 GHz and bandwidth is 1.08 GHz, 2.16 GHz, 4.32 GHz, and 3.24 GHz; or one or more values that comprise at least one of a first value, a second value, a third value or a fourth value, wherein the first value is used to indicate that an STA supports a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, wherein the second value is used to indicate that the STA supports a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz and 540 MHz, wherein the third value is used to indicate that the STA supports a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, 540 MHz, and 270 MHz, and wherein the fourth value is used to indicate that the STA supports a channel whose frequency band is 45 GHz and bandwidth is 1.08 GHz, 540 GHz, 270 MHz, and 2.16 GHz.

6 . The method according to claim 1 , further comprising:
selecting, as the network controller, a STA device with a largest medium access control (MAC) address from at least two STA devices whose PCP factors are the same and are a largest value among PCP factors of the multiple STA devices.

7 . The method according to claim 1 , wherein the network controller is a PCP.

8 . A station (STA) device, comprising:
a receiver configured to acquire supported channel width sets and directional multi-gigabit (DMG) capability information elements of multiple STA devices; a processor; a non-transitory computer readable medium connected to the processor and having stored thereon instructions that, when executed by the processor, cause the processor to:
generate a personal basic service set (PBSS) control point

Assignees

• Huawei Tech Co Ltd

Inventors

• Li Dejian
• Liu Pei

Classifications

• H04W84/20

  Leader-follower arrangements · CPC title

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04W48/20 Primary

  Selecting an access point · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title