System and method for providing data services using idle cell resources

• US 6,069,882 A
• Filed: 07/30/1997
• Issued: 05/30/2000
• Est. Priority Date: 07/30/1997
• Status: Expired due to Term

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Inventors: Zellner, Samuel N., Enzmann, Mark
• Primary Examiner(s): Vu, Huy D.
• Assistant Examiner(s): PHAN, MAN U
• Application Number:
  US08/903,534
• Time in Patent Office: 1,035 Days
• Field of Search: 370/326, 370/329, 370/347, 370/337, 370/256, 370/236, 370/348, 370/336, 370/345, 370/310, 370/341, 370/280, 455/33.1, 455/34.1, 455/439
• US Class Current: 370/329
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/745 Reaction in network
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04M 15/00 Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
• CPC Class Codes: H04M 15/745 Customizing according to wishes of subscriber, e.g. friends or family
• CPC Class Codes: H04M 15/80 Rating or billing plans; Tariff determination aspects
• CPC Class Codes: H04M 15/8016 based on quality of service [QoS]
• CPC Class Codes: H04M 2215/0108 Customization according to wishes of subscriber, e.g. customer preferences, friends and family, selecting services or billing options, Personal Communication Systems [PCS]
• CPC Class Codes: H04M 2215/0152 General billing plans, rate plans, e.g. charge rates, numbering plans, rate centers, customer accounts
• CPC Class Codes: H04M 2215/2026 Wireless network, e.g. GSM, PCS, TACS
• CPC Class Codes: H04M 2215/32 Involving wireless systems
• CPC Class Codes: H04M 2215/7414 QoS
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 4/24 Accounting or billing
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/566 of the information or information source or recipient
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 76/36 for reassigning the resources associated with the released connections
• CPC Class Codes: H04W 8/04 : Registration at HLR or HSS [Home Subscriber Server]

Abstract

Providing data services using idle cell capacity in a cellular communications system. The system and method assign priorities to each remote user device in the cellular communications system. In response to a request for service for a remote user device, the mobile switch determines whether an idle channel is available for the remote user device. If no idle channel is available, the mobile switch determines whether a remote use device with a lower priority than the requesting remote user device is using a channel. If a lower priority remote use is using a channel, its call is terminated and the channel is assigned to the requesting remote user device. If no lower priority remote user device is using a channel, the request for service is put into an ordered queue to wait for the next available idle channel.

Claims

1. In a switched communications system having a switch, remote users, a network access node, and a limited number of channels per network access node, a method for transmitting data using idle channels comprising:

a. assigning a priority to each remote user,

b. receiving a request for service at the switch for a first remote user;

c. ascertaining if any channel at the access node of the first remote user is idle; and

d. if a channel is not idle,

i. searching for a second remote user with a priority lower than the first remote user among the remote users that are using the channels of the access node;

ii. if a second remote user with a priority lower than the first remote user is found,

(a) terminating the call of the second remote user; and

(b) allocating the cannel of the second remote user to the first remote user; and

iii. if a second remote user with a priority lower than the first remote user is not found,

(a) placing the request for service for the first remote user in a queue;

(b) ordering the queue based on the priority of the remote users in the queue; and

(c) when a channel becomes idle, allocating that idle channel to the remote user at the head of the queue.

2. The method of claim 1, wherein the first remote user is assigned multiple channels with one or more priorities.

3. The method of claim 1, wherein the method further includes searching for the second remote user based on the duration of the second remote user'"'"'s call.

4. The method of claim 1, where upon termination of the call of the second remote user, a request for service for the second remote user is placed in the queue for connection when an idle channel becomes available.

5. The method of claim 1, wherein the request for service for the first remote user includes a request for the transmission of inbound data to the first remote user and the method further includes receiving the inbound data for storage at the mobile switch until the first remote user is assigned an idle channel and transmitting the inbound data to the first remote user from the mobile switch when the first remote user is assigned an idle channel.

25. The method of claim 1, wherein the step of assigning a priority to each remote user comprises associating the priority with a Mobile Identification Number of the remote user.

26. The method of claim 5, wherein the step of assigning a priority to each remote user comprises associating the priority with a Mobile Identification Number of the remote user.

6. In a switched communications system having a switch, remote users, network access nodes, and a limited number of channels per network access node, a method for transmitting data using idle channels comprising:

a. assigning a priority to each remote user,

b. receiving a request for service at the switch for a first remote user;

c. ascertaining if any channel at the access node of the first remote user is idle;

d. if a channel is not idle;

i. checking the priority of the first remote user; and

ii. searching for a second remote user with a priority lower than the first remote user among the remote users that are using the channels at the access node;

iii. if a second remote user with a priority lower than the first remote user is found, terminating the call of the second remote user and allocating the channel of the second remote user to the first remote user; and

iv. if a second remote user with a priority lower than the first remote user is not found, placing the request for service for first remote user in a queue, ordering the queue, and when a channel becomes idle, allocating that idle channel to the remote user at the head of the queue.

7. The method of claim 6, wherein the first remote user is assigned multiple channels with one or more priorities.

8. The method of claim 6, where the method further includes searching for the second remote user based on the duration of the second remote user'"'"'s call.

9. The method of claim 6, where upon termination of the call of the second remote user, a request for service for the second remote user is placed in the queue for connection when an idle channel becomes available.

10. The method of claim 9, wherein the queue is ordered based on priority of each remote user in the queue.

11. The method of claim 6, wherein the queue is ordered based on priority of each remote user in the queue.

12. The method of claim 6, wherein the request for service for the first remote user includes a request for the transmission of inbound data to the first remote user and the method further includes receiving the inbound data for storage at the switch until the first remote user is assigned an idle channel and transmitting the inbound data to the first remote user from the switch when the first remote user is assigned an idle channel.

27. The system of claim 11, wherein the priority for each remote user is recorded in the database in association with a Mobile Identification Number of the remote user.

13. A switched communications system having a switch, remote users, network access nodes, and a limited number of channels per network access node, the switch comprising:

a. a memory containing a database in which a priority for each remote user is recorded; and

b. a node controller operatively connected to the memory and configured to control the functions of the switch, wherein the node controller;

i. receives a request for service at the switch for a first remote user;

ii. ascertains if any channel at the access node of the first remote user is idle; and

iii. if a channel is not idle;

(a) searches for a second remote user with a priority lower than the first remote user among the remote users that are using the channels at the access node;

(b) if the node controller finds a second remote user with a priority lower than the first remote user, terminates the call of the second remote user and allocates the channel of the second remote user to the first remote user;

(c) if the node controller does not find a second remote user with a priority lower than the first remote user, establishes a queue and places the request for service for the first remote user in the queue, orders the queue based on the priority of the remote users in the queue, and when a channel becomes idle, allocates that idle channel to the remote user at the head of the queue.

14. The switched communications system of claim 13, wherein the first remote user is assigned in the database multiple channels with one or more priorities.

15. The switched communications system of claim 13, wherein the node controller searches for the second remote user based on the duration of the second remote user'"'"'s call.

16. The switched communications system of claim 13, where upon termination of the call of the second remote user, the node controller places a request for service for the second remote user in the queue for connection when an idle channel becomes available.

17. The switched communications system of claim 13, wherein the switch further comprises a buffer for receiving and storing inbound data when the request for service for the first remote user includes transmitting the data to the first remote user, wherein the inbound data is stored in the buffer until the first remote user is assigned an idle channel and the inbound data is transmitted to the first remote user from the buffer when the first remote user is assigned an idle channel.

28. The system of claim 15, wherein the priority for each remote user is recorded in the database in association with a Mobile Identification Number of the remote user.

18. In a switched communications system having a switch, remote users, network access nodes, and a limited number of channels per network access node, the switch comprising:

a. a memory containing a database in which a priority for each remote user is recorded; and

b. a node controller operatively connected to the memory and configured to control the functions of the switch, wherein the node controller;

i. receives a request for service at the switch for a first remote user;

ii. ascertains if any channel at the access node of the first remote user is idle;

iii. if a channel is not idle;

(a) searches for a second remote user with a priority lower than the first remote user among the remote users that are using the channels at the access node;

(b) if a second remote user with a priority lower than the first remote user is found, terminates the call of the second remote user and allocates the channel of the second remote user to the first remote user; and

(c) if a second remote user with a priority lower than the first remote user is not found, establishes a queue and places the request for service for the first remote user in the queue, orders the queue, and when a channel becomes idle, allocates that idle channel to a remote user based on the order of the queue.

19. The switched communications system of claim 18, wherein the first remote user is assigned in the database multiple channels with one or more priorities.

20. The switched communications system of claim 18, wherein the node controller searches for the second remote user based on the duration of the second remote user'"'"'s call.

21. The switched communications system of claim 18, where upon termination of the call of the second remote user, the node controller places a request for service for the second remote user in the queue for connection when an idle channel becomes available.

22. The switched communications system of claim 21, wherein the node controller orders the queue based on the priority of the remote users in the queue.

23. The switched communications system of claim 18, wherein the node controller orders the queue based on the priority of the remote users in the queue.

24. The switched communications system of claim 18, wherein the switch further comprises a buffer for receiving and storing inbound data when the request for service for the first remote user includes transmitting the data to the first remote user, wherein the inbound data is stored in the buffer until the first remote user is assigned an idle channel and the inbound data is transmitted to the first remote user from the buffer when the first remote user is assigned an idle channel.