Method and apparatus for transferring communication within a communication system

• US 6,295,450 B1
• Filed: 06/23/1998
• Issued: 09/25/2001
• Est. Priority Date: 06/23/1998
• Status: Expired due to Term

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Deshmukh, Jeetendra G., Lyer, Subramanian S., Susai, Antony D., Spear, Stephen
• Primary Examiner(s): Nguyen, Lee
• Assistant Examiner(s): Nguyen, Simon
• Application Number:
  US09/103,228
• Time in Patent Office: 1,190 Days
• Field of Search: 455/452, 455/524, 455/525, 455/436, 455/437, 455/438, 455/439, 455/517, 455/417, 370/346, 370/348, 370/335, 370/329, 370/455
• US Class Current: 455/436
• CPC Class Codes: H04W 36/26 by agreed or negotiated communication parameters
• CPC Class Codes: H04W 36/38 by fixed network equipment

Abstract

Transferring communication within a communication system (100) occurs as follows: During communication with a serving base station (101), a handover candidate list (110) is provided to the remote unit (113). The list (110) comprises a set of neighboring base stations (102) that are capable of supporting the service requirements of the remote unit (113) and does not include any neighboring base station (111) that are incapable of supporting the current service required by the remote unit.

Claims

1. A method for transferring communication within a communication system, the method comprising the steps of:

determining a plurality of neighboring base stations that a remote unit is capable of monitoring;

determining a plurality of base station capabilities for the plurality of neighboring base stations, wherein the plurality of base stations capabilities are from the group consisting of an ability to provide a video call, an ability to provide a data call, an ability to provide a bounded transfer delay, and an ability to provide a specified data throughput;

determining a current service required by the remote unit wherein the current service taken from the group consisting of a video call, a data call, a bounded transfer delay, and a specified data throughput; and

transmitting to the remote unit, a list comprising a set of base stations from the plurality of neighboring base stations, that are capable of supporting the current service required by the remote unit, the list additionally not including neighboring base stations that are incapable of supporting the current service required by the remote unit wherein the list is utilized by the remote unit for transferring communication within the communication system.

2. The method of claim 1 wherein the step of transmitting to the remote unit further comprises the step of transmitting a plurality of base station capabilities to the remote unit.

3. The method of claim 1 wherein the step of determining the plurality of base station capabilities for the plurality of neighboring base stations comprises the step of receiving the plurality of base station capabilities from the remote unit.

4. The method of claim 1 further comprising the step of determining a specific base station that best meets the service requirements of the remote unit for transferring communication within the communication system to the specific base station.

5. A method for transferring communication within a communication system, the method comprising the steps of:

determining a plurality of neighboring base stations that a remote unit is capable of monitoring;

determining a plurality of base station capabilities for the plurality of neighboring base stations, wherein the plurality of base stations capabilities are from the group consisting of an ability to provide a video call, an ability to provide a data call, an ability to provide a bounded transfer delay, and an ability to provide a specified data throughput;

determining a current service required by the remote unit, wherein the current service taken from the group consisting of a video call, a data call, a bounded transfer delay, and a specified data throughput;

measuring signal quality for individual base stations within a set of the plurality of neighboring base stations; and

determining a list of individual base stations from the plurality of neighboring base stations that are capable of supporting the current service required by the remote unit, the list additionally not including neighboring base stations that are incapable of supporting the current service required by the remote unit wherein the list is utilized by the remote unit for transferring communication within the communication system.

6. The method of claim 5 wherein the step of measuring signal quality for individual base stations within the set of the plurality of neighboring base stations comprises the steps of:

determining a plurality of base stations within the plurality of neighboring base stations that meet the current service required by the remote unit to create a set of the plurality of neighboring base stations; and

measuring signal quality for individual base stations within the set of the plurality of neighboring base stations.

7. An apparatus for transferring communication within a communication system, the apparatus comprising:

a logic unit for determining a list of base stations from a plurality of neighboring base stations capable of being monitored by a remote unit;

wherein the list comprises a set of base stations that are capable of supporting a current service required by the remote unit;

wherein the list additionally does not include base stations neighboring a serving base station that are incapable of supporting the current service required by the remote unit;

wherein the list is utilized for transferring communication within the communication system; and

wherein the current service required by the remote unit is a service taken from the group consisting of a video call, a data call, a bounded transfer delay, and a specified data throughput.

8. The apparatus of claim 7 further comprising a transceiver for transmitting the list to the remote unit.

9. The apparatus of claim 7 wherein the communication system is a Global System for Mobile Communications (GSM) system overlaid with a General Packet Radio Service (GPRS) system.

10. The apparatus of claim 7 further comprising a transceiver for receiving base station capabilities that are broadcast from the plurality of neighboring base stations.