Resource management and traffic control in time-division-duplex communication systems

• US 20050048985A1
• Filed: 06/06/2003
• Published: 03/03/2005
• Est. Priority Date: 06/25/1999
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Haartsen, Jacobus Cornelis
• Granted Patent: US 7,313,123 B2
• Time in Patent Office: Days
• US Class Current: 455/453
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A system and method for resource management and traffic control in time division duplex communication systems is discloses. A multi-radio base station maintains communication links with a plurality of remote terminals, each of which requests a specific bandwidth ratio. A controller analyzes the requested bandwidth ratios and allocates slots in the base station radios according to a packing scheme that synchronizes the transmission and receive timing of the multiple base station radios communication links. The resource management and traffic control techniques may be applied to a variety of communication devices communicating over a variety of interfaces, such as WLAN or BLUETOOTH. Furthermore, the techniques can be employed with devices communicating with two or more remote devices via different interfaces.

Claims

1. A method of operating a communication system that implements communication links between a multi radio base station and a plurality of remote terminals, wherein the remote terminals request a bandwidth ratio, comprising the steps of:

(a) periodically analyzing the requested bandwidth ratios of the remote terminals; and

(b) allocating slots in the base station radios according to a packing scheme that synchronizes the transmission and receive timing of the multiple base station radios'"'"' communication links with the plurality of remote terminals, wherein for at least two of the plurality of remote terminals each having respective communication links with different corresponding base station radios of the multi radio base station, the corresponding base station radios transmit data at substantially the same time and receive data at substantially the same time over each of the respective communication links.

2. The method of claim 1, wherein the slot allocation step provides synchronization to avoid one or more transmitting radios from blocking data reception by one or more receiving radios.

3. A communication system, comprising:

a base station having a plurality of radio transceivers for establishing communication links with remote terminals;

a plurality of remote terminals; and

a controller for allocating the radio transceivers among the plurality of remote terminals in range of the base station,

wherein the controller allocates slots in the radio transceivers'"'"' according to a packing scheme that synchronizes the transmission and receive timing of the multiple radio transceivers'"'"' communication links with the plurality of remote terminals, and wherein for at least two of the plurality of remote terminals each having respective communication links with different corresponding transceivers of the base station, the corresponding transceivers transmit data at substantially the same time and receive data at substantially the same time over each of the respective communication links.

4. The communication system of claim 3, wherein the slot allocation provides synchronization to avoid one or more transmitting transceivers from blocking data reception by one or more receiving transceivers.

5. A communication system according to claim 3, further comprising:

a plurality of base stations, each having a plurality of radio transceivers for establishing communication links with remote terminals; and

a base station controller for managing bandwidth allocation between the plurality of base stations.

6. A communication device, comprising:

a plurality of radio transceivers for establishing communication links with one or more remote devices;

a controller for allocating the radio transceivers among the one or more remote devices, wherein the controller allocates slots in the radio transceivers according to a packing scheme that synchronizes the transmission and receive timing of the multiple radio transceivers'"'"' communication links with the plurality of remote devices, and wherein for at least two of the plurality of remote devices each having respective communication links with different corresponding transceivers of the communication device, the corresponding transceivers transmit data at substantially the same time and receive data at substantially the same time over each of the respective communication links.

7. The communication device of claim 6, wherein the slot allocation provides synchronization to avoid one or more transmitting transceivers from blocking data reception by one or more receiving transceivers.

8. The communication device of claim 6, wherein at least two of the plurality of transceivers each support a different air interface for establishing the communication links.

9. The communication device of claim 8, wherein at least one of the plurality of transceivers supports WLAN communication.

10. The communication device of claim 8, wherein at least one of the plurality of transceivers supports BLUETOOTH communication.