Call-setup method in a digital cellular radio communication system

• US 5,987,319 A
• Filed: 04/25/1997
• Issued: 11/16/1999
• Est. Priority Date: 04/26/1996
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Bruhn, Stefan, Hermansson, Hans, Minde, Tor Bjorn
• Primary Examiner(s): TO, DORIS HA
• Application Number:
  US08/845,387
• Time in Patent Office: 935 Days
• Field of Search: 455/422, 455/436, 455/440, 455/441, 455/450, 455/452-453, 455/455, 455/509, 455/516, 455/62, 370/329, 370/335, 370/337, 370/344, 370/347-348, 370/431, 370/437, 370/441-443
• US Class Current: 455/422.1
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0032 Without explicit signalling
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/267 taking into account the information rate

Abstract

A call-setup method in a digital cellular radio communication system determines a plurality of parameters defining the current state of the system. By evaluating and combining these parameters into a communication resource request, a communication resource that best matches the request may be allocated in order to optimize system resource usage and/or service quality.

Claims

1. A call-setup method for speech connections in a digital cellular radio communication system, the method comprising the steps of:

determining parameters of;

a current location of a mobile station,

a speech service requested, and

previously collected statistical data reflecting a probable current state of the system;

evaluating and combining the parameters into a communication resource request; and

allocating a communication resource that best matches the communication resource request to optimize system resource usage and/or speech service quality.

2. The method of claim 1, wherein the communication resource is the degree of channel error protection offered by the system.

3. The method of claim 1, wherein the communication resource is the gross bit rate offered by the system.

4. The method of claim 1, wherein the communication resource is the service level offered by the system.

5. The method of claim 1, wherein the parameters also include at least one of:

an expected mobility of the mobile station;

a channel quality parameter;

expected system load from previous experience;

actually measured current system load;

a possible battery-saving mode of the mobile station; and

time of day and date.

6. The method of claim 5, further comprising the step of determining the capabilities of at least some of the system components involved in a subsequent connection.

7. The method of claim 5, wherein the parameters include parameters on conditions in neighbor cells of a cell in which the call-setup is attempted.

8. The method of claim 5, further comprising the step of repeating the method during a call for dynamic reallocation of another communication resource.

9. The method of claim 1, wherein the digital cellular radio communication system is a TDMA system.

10. The method of claim 1, wherein the digital cellular radio communication system is a CDMA system.

11. The method of claim 1, wherein the digital cellular radio communication system is a FDMA system.