System and associated method of operation for managing bandwidth in a wireless communication system supporting multimedia communications

• US 6,097,733 A
• Filed: 06/13/1997
• Issued: 08/01/2000
• Est. Priority Date: 06/13/1997
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Nortel Networks Corporation
• Inventors: Molina, Carlos A., Basu, Kalyan K.
• Primary Examiner(s): NGO, RICKY QUOC
• Application Number:
  US08/876,192
• Time in Patent Office: 1,145 Days
• Field of Search: 370/328, 370/329, 370/341, 370/465, 370/468, 370/521, 370/335, 370/336, 370/337, 370/338, 370/342, 370/345, 370/347, 370/441, 370/442, 370/437, 370/474, 370/479, 370/477, 455/422, 455/450, 455/452, 455/507, 455/509, 455/517, 455/550, 455/560, 455/561
• US Class Current: 370/468
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 Access point controller devices
• CPC Class Codes: H04W 92/12 between access points and access point controllers

Abstract

A communication system provides wireless voice and multimedia communications and includes a base station, a plurality of wireless mobile units and a bandwidth allocator. The base station provides wireless coverage throughout a service area and has a bandwidth for providing the wireless coverage. The plurality of wireless mobile units operate within the service area and communicate with the base station to transmit and receive both voice communications and multimedia communications. The bandwidth allocator selectively allocates the bandwidth in response to wireless multimedia communication requirements to achieve a minimum transmission rate for multimedia communications. The communication system may include a plurality of channels, each having a channel bandwidth with the bandwidth allocator selectively allocating the channels in response to the multimedia communication requirements to achieve the minimum transmission rate. The base station may also include a plurality of data modems, each of the data modems providing a respective portion of the bandwidth, the bandwidth allocator selectively allocating the plurality of data modems of the base station to achieve the minimum transmission rate. Further, at least one of the wireless mobile units may include a plurality of data modems with the bandwidth allocator selectively allocating the data modems of the wireless mobile unit to achieve the minimum transmission rate. In such case, each of the of the plurality of modems may be assigned a channel. In some constructions, the bandwidth allocator may allocate time divisions of the plurality of channels bandwidth while in other constructions may allocate allocating code divisions of the bandwidth to achieve the minimum transmission rate.

Claims

1. A communication system for providing wireless voice and multimedia communications to a plurality of wireless mobile units, the communication system comprising:

a base station controller including;

a wired Internet connection that provides access to the Internet;

a public switched telephone system connection;

a base station coupled to the base station controller, the base station providing wireless coverage within a cell, the base station having a bandwidth for providing the wireless coverage, the wireless coverage facilitating both voice communications and multimedia communications; and

a wireless service interface coupled to the base station controller and to the base station, the wireless service interface comprising;

a bandwidth allocator that allocates the bandwidth among transmit multimedia communications, receive multimedia communications, transmit voice communications and receive voice communications in response to requirements of the plurality of wireless units;

a multimedia communication segmentation unit that segments outgoing multimedia communications for transmission according to allocated bandwidth; and

a multimedia communication assembly unit that reconstructs incoming segmented multimedia communications according to allocated bandwidth.

2. The communication system of claim 1, the bandwidth including a plurality of channels, each channel having a channel bandwidth, the bandwidth allocator selectively allocating the channels in response to the multimedia communication requirements to achieve a minimum transmission rate.

3. The communication system of claim 1, the base station including a plurality of data modems, each of the data modems providing a respective portion of the bandwidth, the bandwidth allocator selectively allocating the plurality of data modems of the base station to achieve the minimum transmission rate.

4. The communication system of claim 3, at least one of the wireless mobile units including a plurality of data modems, the bandwidth allocator selectively allocating the data modems of the wireless mobile unit to achieve a minimum transmission rate.

5. The communication system of claim 3, the bandwidth comprising a plurality of channels, each of the plurality of modems assigned to a respective channel.

6. The communication system of claim 1, the bandwidth allocator allocating time divisions of the bandwidth to achieve the minimum transmission rate.

7. The communication system of claim 1, the bandwidth allocator allocating code divisions of the bandwidth to achieve the minimum transmission rate.

8. The communication system of claim 1, the bandwidth allocator further providing a minimum bandwidth for voice communications.

9. The communication system of claim 1, wherein at least one of the plurality of wireless mobile units interacts with the bandwidth allocator to receive a minimum transmission rate for multimedia communications.

10. The communication system of claim 9, wherein the bandwidth allocator provides the minimum bandwidth for multimedia communications to maintain a grade of service.

11. The communication system of claim 1, the wireless service interface further comprising:

a compression unit that compresses transmit voice communications and transmit multimedia communications; and

a decompression unit that decompresses receive voice communications and receive multimedia communications.

12. The communication system of claim 1, each of the plurality of wireless mobile units including a wireless multimedia interface comprising:

a multimedia communication segmentation unit that segments outgoing multimedia communications for transmission according to allocated bandwidth;

a multimedia communication assembly unit that reconstructs incoming segmented multimedia communications according to allocated bandwidth;

a bandwidth negotiation unit that allocates the bandwidth among transmit multimedia communications, receive multimedia communications, transmit voice communications and receive voice communications; and

a radio that transmits and receives the voice communications and multimedia communications.

13. The communication system of claim 12, the wireless multimedia interface further comprising:

a compression unit that compresses transmit voice communications and transmit multimedia communications; and

a decompression unit that decompresses receive voice communications and receive multimedia communications.

14. The communication system of claim 1, wherein the bandwidth allocator provides at least one grade of service for multimedia communications.

15. The communication system of claim 14, wherein the bandwidth allocator provides multiple classes of service, each class of service associated with a respective grade of service.

16. The communication system of claim 1, wherein the bandwidth allocator provides performance indications to a user, the performance indications relating the relative performance of the communication system.

17. In a communication system for providing wireless voice and multimedia communications that includes a base station providing a bandwidth of wireless coverage within a service area to a plurality of wireless units operating within the service area, a method of operation comprising the steps of:

receiving bandwidth requirement requests from at least some of the plurality of wireless units, the bandwidth requirement requests including multimedia bandwidth requirements;

allocating the bandwidth among the plurality of mobile units based upon the bandwidth requirement requests, the bandwidth allocated among transmit multimedia communications, receive multimedia communications, transmit voice communications and receive voice communications;

segmenting outgoing multimedia communications for transmission to a wireless unit of the plurality of wireless units according to a respective allocated bandwidth;

transmitting the segmented multimedia communications to the wireless unit using the respective allocated bandwidth;

receiving the segmented multimedia communications at the wireless unit; and

reconstructing the segmented multimedia communications at the wireless unit.

18. The method of claim 17, wherein the bandwidth includes a plurality of channels, each having a channel bandwidth, and the method includes the step of:

selectively allocating the channels in response to the bandwidth requirement requests to achieve a minimum transmission rate.

19. The method of claim 17, further comprising the step of allocating time divisions of the bandwidth to achieve a minimum transmission rate.

20. The method of claim 17, wherein the base station includes a plurality of cellular digital packet data modems with each of the cellular digital packet data modems providing a respective portion of the bandwidth, the method further comprising the step of:

selectively allocating the plurality of cellular digital packet data modems of the base station to achieve a minimum transmission rate.

21. The method of claim 20, wherein at least one of the wireless mobile units includes a plurality of cellular digital packet data modems, the method further comprising the step of:

selectively allocating the cellular digital packet data modems of the wireless mobile units to achieve a minimum transmission rate.

22. The method of claim 17, further comprising the step of providing a minimum bandwidth for voice communications.

23. The method of claim 17, further comprising the step of providing at least one grade of service, with each grade of service corresponding to a minimum transmission rate for multimedia communications within the communication system.

24. The method of claim 23, further comprising the step of providing multiple classes of service, each class of service associated with a respective grade of service.

25. The method of claim 17, further comprising the step of providing performance indications to a user, the performance indications relating the relative performance of the communication system.

35. The wireless unit of claim 24, wherein the base station provides multiple classes of service, each class of service associated with a respective grade of service.

26. A wireless unit for operation with a communication system that includes at least one base station that supports wireless multimedia communications within a corresponding cell, the wireless unit comprising:

terminal circuitry;

a radio frequency interface coupled to the terminal circuitry that is capable of wirelessly interfacing with the base station; and

a multimedia interface unit coupled to the terminal circuitry and to the radio frequency interface, the multimedia interface comprising;

a bandwidth negotiation unit that interacts with the base station to obtain an assignment of an allocated bandwidth for transmit multimedia communications, receive multimedia communications, transmit voice communications and receive voice communications;

a multimedia communication segmentation unit that segments outgoing multimedia communications for transmission according to the allocated bandwidth; and

a multimedia communication assembly unit that reconstructs incoming segmented multimedia communications according to the allocated bandwidth.

27. The wireless unit of claim 26, the bandwidth provided by a plurality of channels, each channel having a channel bandwidth, the plurality of the channels allocated in response to the multimedia communication requirements of a plurality of serviced wireless units operating within the corresponding service area to achieve a minimum transmission rate.

28. The wireless unit of claim 26, the bandwidth further allocated along time divisions of the plurality of channels to achieve a minimum transmission rate.

29. The wireless unit of claim 26, the wireless unit including a plurality of cellular digital packet data modems, each of the cellular digital packet data modems servicing a respective portion of the allocated bandwidth, the bandwidth negotiation unit selectively allocating the plurality of cellular digital packet data modems.

30. The wireless unit of claim 29, the bandwidth comprising a plurality of channels, each of which has a channel bandwidth, each of the plurality of digital packet data modems assigned to a respective channel.

31. The wireless unit of claim 26, the bandwidth negotiation unit obtaining sufficient bandwidth to achieve a minimum transmission rate for multimedia communications.

32. The wireless unit of claim 26, the bandwidth negotiation unit obtaining allocations of code divisions of the bandwidth responsive to multimedia communication requirements to achieve a minimum transmission rate.

33. The wireless unit of claim 26, the bandwidth negotiation unit obtaining allocations of time divisions of the bandwidth responsive to multimedia communication requirements to achieve a minimum transmission rate.

34. The wireless unit of claim 26, wherein the base station provides at least one grade of service for multimedia communications.

36. The wireless unit of claim 26, wherein the bandwidth allocation unit, the performance indications relating the relative performance of the communication system.