CA2294226A1 - Cdma communication system which selectively allocates bandwidth upon demand - Google Patents

Cdma communication system which selectively allocates bandwidth upon demand Download PDF

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Publication number
CA2294226A1
CA2294226A1 CA002294226A CA2294226A CA2294226A1 CA 2294226 A1 CA2294226 A1 CA 2294226A1 CA 002294226 A CA002294226 A CA 002294226A CA 2294226 A CA2294226 A CA 2294226A CA 2294226 A1 CA2294226 A1 CA 2294226A1
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communication
channels
data rate
cdma
division multiple
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CA2294226C (en
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Fatih M. Ozluturk
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InterDigital Technology Corp
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1307—Call setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13098—Mobile subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13174—Data transmission, file transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13208—Inverse multiplexing, channel bonding, e.g. TSSI aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13294—CDMA, code division multiplexing, i.e. combinations of H04Q2213/13291 and/or H04Q2213/13292 with space division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13332—Broadband, CATV, dynamic bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Abstract

A CDMA wireless digital communication system which supports all types of voice and data communications while utilizing the minimum amount of bandwidth for the particular application. The system efficiently allocates ISDN bandwidth on demand by a subscriber. Upon initialization of the subscriber unit, the system establishes a channel and generates the necessary spreading codes to support the highest capacity channel desired by the subscriber unit. Portions of the communication spectrum bandwidth are not reserved until actually required by the subscriber unit. Since the call setpup is performed at the beginning of a call from that subscriber unit, including the assignment of spreading codes, a subscriber unit can quickly gain access to the portion of the spectrum that is required to support the particular application.

Claims (17)

1. A wireless digital code division multiple access (CDMA) communication system for dynamically switching data communication rates required by users, the system comprising:
at least a first communication station (101) including:
means for establishing (318) communication channels of predetermined data transmission rates;
means for transmitting (334) a communication at an initial data rate using at least one channel;
means for monitoring (104) said communication and determining an adjusted data rate desired for continued support of said communication;
means for allocating (104) a sufficient number of channels for the communication based on the adjusted data rate such that the sum of the data rates of the allocated channels is at least equal to the selected data rate and is not greater than the adjusted data rate plus a predetermined rate; and means for continuing the transmission (334) of said communication within said allocated channels whereby said station (101) dynamically adds or tears down channels for said communication by changing the number of allocated channels during said communication.
2. A wireless digital code division multiple access (CDMA) system as in claim 1 wherein said establishing means (318) establishes D channels at a first data rate and B

channels at a second data rate which is greater than said first data rate.
3. A wireless digital code division multiple access (CDMA) system as in claim 2 wherein said first data rate is 16 kb/s and said second date rate is 64 kb/s.
4. A wireless digital code division multiple access (CDMA) system as in claim 3 wherein the communication is an ISDN communication and said allocating means (104) allocates a single D channel and a sufficient number of B channels for continued transmission of the communication. from said station (101) and said predetermined rate is equal to said second data rate.
5. A wireless digital code division multiple access (CDMA) system as in claim 2 wherein the communication is an ISDN communication and said allocating means (104) allocates a single D channel and a sufficient number of B channels for continued transmission of the communication from said station (101) and said predetermined rate is equal to said second data rate.
6. A wireless digital code division multiple access (CDMA) system as in claim 1 wherein a set of assigned channel codes are assigned for the communication and the allocating means (104) allocates channels having codes within said assigned set.
7. A wireless digital code division multiple access (CDMA) system as in claim 1 further comprising:
at least a second communication station (200) including:
means for receiving (206) from said first station (101) the communication within said allocated channels.
8. A wireless digital code division multiple access (CDMA) as in claim 7 wherein:
said second communication station (200) further includes:
means for establishing (236) return communication channels of different data transmission rates;
means for monitoring (236) a return communication and determining a desired return data rate;
means for allocating (236) a sufficient number of channels for the return communication based on desired the return data rate such that the total data rate of the allocated return channels is at least equal to the desired return data rate and is not greater than the desired return data rate plus a predetermined rate; and means for transmitting (234) the return communication within said allocated return channels; and said first communication station (101) includes means for receiving (306) the return communication within said allocated return channels.
9. A wireless digital code division multiple access (CDMA) system as in claim 8 wherein each said establishing means (236, 318) establishes D channels at a first data rate and B channels at a second data rate which is greater than said first data rate.
10. A wireless digital code division multiple access (CDMA) system as in claim 9 wherein said first data rate is 16 kb/s and said second date rate is 64 kb/s.
11. A wireless digital code division multiple access (CDMA) system as in claim 9 wherein the communication and return communication are an ISDN communication; each said allocating means (104, 236) allocates a single D channel and a sufficient number of B channels; and said predetermined rates are equal to said second data rate.
12. A wireless digital code division multiple access (CDMA) as in claim 7 wherein said first communication station (101) is a base station which further comprises:
a physical layer generating CDMA codes, synchronizing between said base station (101) and subscriber units (200), providing bearers, spreading and transmitting bits on a CDMA
code, measuring received signal strength to permit automatic power control, and generating transmission of pilot signals;
a medium access control (MAC) layer encoding and decoding for forward error correcting, assigning CDMA codes, encrypting and decrypting communication signals, encrypting and error-correcting to the bearers provided by the physical layer, framing, error checking and discriminating medium access control peer to peer messages and data, linking control frames, and processing automatic control information;
and a data link control layer providing an error-free link among the layers, wherein the data link control layer initiates changes in the allocation of channels based on determining the minimum desired data rate for communications channels via physical layer.
13. A wireless digital code division multiple access (CDMA) communication system as in claim 12 wherein said second communication station (200) is a subscriber unit which further comprises:
a physical layer generating CDMA codes; synchronizing between said base station (101) and said subscriber unit (200); providing bearers; spreading and transmitting bits on a CDMA code; measuring received signal strength to permit automatic power control; and generating transmission of pilot signals;
a MAC layer encoding and decoding for forward error correcting; assigning CDMA codes; encrypting and decrypting communication signals; encrypting and error-correcting to the bearers provided by the physical layer; framing; error checking and discriminating medium access control, peer to peer messages and data; linking control frames; and processing automatic control information; and a data link control layer providing an error-free link among the layers, wherein the data link control layer initiates changes in the allocation of channels based on determining the minimum desired data rate for communications channels via physical layer.
14. A method for allocating bandwidth and dynamically switching between different bandwidths in a communication station (101) of a code division multiple access (CDMA) system based upon the data communication rates required by a user comprising:
a) transmitting a communication at an initial data rate using at least one channel;
b) monitoring said communication and determining an adjusted data rate desired for continued support of said communication;
c) allocating a sufficient number of channels for the communication based on the adjusted data rate such that the total data rate of the allocated channels is at least equal to the adjusted data rate and is not greater than the adjusted data rate plus a predetermined rate; and d) continuing transmission of said communication within said allocated channels whereby said communication station (101) dynamically adds or tears down channels for said. communication by changing the number of allocated channels during said communication.
15. A method according to claim 14 wherein steps b, c, and d are repeated during transmission of said communication to determine new adjusted data rates and new allocations of channels during said communication.
16. A method according to claim 14 wherein said communication station (101) establishes D channels at a first data rate and B channels at a second data rate which is greater than said first data rate and said allocating includes the allocation of a single D channel and a sufficient number of B channels using said second data rate as said predetermined rate.
17. A method according to claim 16 wherein said communication station (101) establishes D channels at a data rate cf 16 kb/s and said B channels at a data rate of 64 kb/s.
CA2294226A 1997-06-16 1998-05-26 Cdma communication system which selectively allocates bandwidth upon demand Expired - Lifetime CA2294226C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US4963797P 1997-06-16 1997-06-16
US60/049,637 1997-06-16
US08/898,537 1997-07-22
US08/898,537 US6075792A (en) 1997-06-16 1997-07-22 CDMA communication system which selectively allocates bandwidth upon demand
PCT/US1998/010600 WO1998058456A2 (en) 1997-06-16 1998-05-26 Cdma communication system which selectively allocates bandwidth upon demand

Publications (2)

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CA2294226A1 true CA2294226A1 (en) 1998-12-23
CA2294226C CA2294226C (en) 2011-05-10

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CA2294226A Expired - Lifetime CA2294226C (en) 1997-06-16 1998-05-26 Cdma communication system which selectively allocates bandwidth upon demand

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US (13) US6075792A (en)
EP (3) EP0990312A2 (en)
JP (11) JP2002513540A (en)
KR (13) KR101434126B1 (en)
CN (4) CN1905384A (en)
AU (1) AU743633B2 (en)
BR (1) BR9810164A (en)
CA (1) CA2294226C (en)
DE (1) DE990312T1 (en)
ES (1) ES2146564T1 (en)
WO (1) WO1998058456A2 (en)

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