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METHOD FOR ALLOCATING BANDWIDTH ON PLURALITY OF MULTI-CARRIER BASE STATIONS

IP.com Disclosure Number: IPCOM000240313D
Original Publication Date: 2015-Jan-21
Included in the Prior Art Database: 2015-Jan-21
Document File: 8 page(s) / 69K

Publishing Venue

Motorola

Related People

Szyszka, Grzegorz: INVENTOR [+3]

Abstract

A communication System Controller (SC) receives a communication request. Upon receipt of the communication request, the controller identifies a first multi-carrier Base Station (BS) that currently has available bandwidth that can support the request and that is currently supporting a greatest number of active communication channels amongst a plurality of multi-carrier BSs. Once the controller identifies the first multi-carrier BS, the controller allocates a first available channel for the communication on the first multi-carrier BS.

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Method for allocating BANDWIDTH on plurality of multi-carrier base stations

By Grzegorz Szyszka, Leszek Wojcik, Waldemar Dworakowski

Motorola Solutions, Inc.

 

ABSTRACT

 A communication System Controller (SC) receives a communication request. Upon receipt of the communication request, the controller identifies a first multi-carrier Base Station (BS) that currently has available bandwidth that can support the request and that is currently supporting a greatest number of active communication channels amongst a plurality of multi-carrier BSs. Once the controller identifies the first multi-carrier BS, the controller allocates a first available channel for the communication on the first multi-carrier BS.

 

FIELD OF THE INVENTION

The field of the invention relates to transmitting communication in networks and, more specifically, to allocating bandwidth on a plurality of multi-carrier BSs for these communication.

PROBLEM

Mobile stations operate in various operating modes, use different technologies, and utilize different protocols and different channel bandwidths as they move across different networks or across the same network. For example, mobile stations may operate according to frequency division multiple access (FDMA) or time division multiple access (TDMA) technology with different channel bandwidth, as for example 12.5 kHz in Project 25 (P25) standard defined by the Association of Public Safety Communications Officials International (APCO) or 25 kHz in Terrestrial Trunked Radio (TETRA) among many others.

These different modes may determine different operating characteristics of the mobile station. In one example, the operating mode determines whether the mobile station utilizes P25 or TETRA technologies. Being able to operate the mobile station according to different modes allows the mobile station to operate more efficiently and effectively.

The bandwidth on a communication frequency block used to conduct communications between mobile stations and other devices can be divided or structured in a variety of different ways. For example, it can be sliced into 12.5 kHz and 25 kHz channels and different communications can be conducted within these channels.

Unfortunately, situations exist where it is difficult or impossible to efficiently utilize the frequency block bandwidth. For example, when assigning wideband communications, the full bandwidth of a frequency block may be required to conduct the communication. Taking P25 and TETRA communication standards as a simple example of narrowband (12.5 kHz) and wideband (25 kHz) consecutively, single 25 kHz frequency block, supported by single multi-carrier BS, can be used for single wideband or two narrowband communications as visualized on Figure 1.

Figure 1

Consequently, in a mixed wide/narrowband system, if narrowband communications are assigned in an even distribution manner across all communication multi-carrier BSs at a site, it becomes difficult to support a wideband communication request since the...