Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link

• US 20040160982A1
• Filed: 02/11/2004
• Published: 08/19/2004
• Est. Priority Date: 06/20/1997
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Tantivy Communications Incorporated (InterDigital, Inc.)
• Inventors: Amalfitano, Carlo, Gorsuch, Thomas E.
• Granted Patent: US 7,580,715 B2
• Time in Patent Office: Days
• US Class Current: 370/468
• CPC Class Codes: H04J 13/16 Code allocation
• CPC Class Codes: H04J 13/18 Allocation of orthogonal codes
• CPC Class Codes: H04L 1/165 Variable formats
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
• CPC Class Codes: H04Q 2213/13098 Mobile subscriber
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13202 Network termination [NT]
• CPC Class Codes: H04Q 2213/13204 Protocols
• CPC Class Codes: H04Q 2213/13209 ISDN
• CPC Class Codes: H04Q 2213/13216 Code signals, frame structure
• CPC Class Codes: H04Q 2213/1327 Release and resetting of connection
• CPC Class Codes: H04Q 2213/13294 CDMA, code division multiplexing, i.e. combinations of H04Q2213/13291 and/or H04Q2213/13292 with space division
• CPC Class Codes: H04Q 2213/13298 Local loop systems, access network
• CPC Class Codes: H04Q 2213/13332 Broadband, CATV, dynamic bandwidth allocation
• CPC Class Codes: H04Q 2213/1336 Synchronisation
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 80/00 : Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/14 : WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

A technique for transmission of wireless signals across CDMA radio links. Bandwidth is allocated dynamically within a session to specific CDMA subscriber unit based upon data rate determinations. Specifically, a dynamic bandwidth allocation algorithm operates from limits calculated based upon available ports per subscriber, expected user bandwidth, and parallel user bandwidth versus throughput. Provisions for priority service, unbalanced forward and reverse spectrum utilization, voice prioritization, and band switching are also made.

Claims

1. For use with a cellular digital communication network having a base station and a plurality of subscriber units served thereby, said cellular digital communications network including a control channel by way of which digital signal transmission channels are assignable for communication sessions for said subscriber units, a method of allocating bandwidth to said subscriber units for said digital signal transmission channels comprising the steps of:

a) in response to a subscriber unit'"'"'s request for a digital signal transmission channel, allocating a portion of said available bandwidth for use by said subscriber unit for said digital signal transmission channel during a communication session; and

b) in the absence of a presentation of digital communication signals by said subscriber unit for a prescribed period of time during said and communication session, deallocating said portion of said available bandwidth from use by said subscriber unit while maintaining the appearance of a continuous connection for said communication session.

2. For use with a cellular digital communication network having a base station and a plurality of subscriber units served thereby, said cellular digital communications network including a control channel by way of which digital signal transmission channels are assignable for communication sessions for said subscriber units, a method of allocating bandwidth to said subscriber units for said digital signal transmission channels comprising the steps of:

a) in response to a subscriber unit'"'"'s need to transmit digital communication signals, allocating a portion of said available bandwidth that is selected to the extent possible for meeting said subscriber unit'"'"'s need, for use by said subscriber unit during a communication session; and

b) in the absence of a presentation of digital communication signals by said subscriber unit for a prescribed period of time during said communication session, deallocating a prescribed portion of said selected portion of said available bandwidth from said subscriber unit and, instead making said prescribed portion of said selected portion of said available bandwidth available for use by another subscriber unit.