Methods of electronic communication device and network node, electronic communication device, network node, and computer programs

• US 10,440,613 B2
• Filed: 07/30/2015
• Issued: 10/08/2019
• Est. Priority Date: 07/30/2015
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Chen, Maomao, Nordstrom, Fredrik
• Primary Examiner(s): Pham, Brenda H
• Application Number:
  US14/766,742
• Publication Number:
  US 20180176828A1
• Time in Patent Office: 1,531 Days
• Field of Search: 370229, 370230, 370235, 370232, 370236, 370252
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0613 using simultaneous transmission H04B7/0686 takes precedence
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 28/22 Negotiating communication rate

Abstract

A method of an electronic communication device is disclosed. The electronic communication device is arranged to operate in a radio communication system, wherein the radio communication system has capability of performing link adaptation by adapting one or more parameters of communication in view of a quality of a radio link between a network node of the radio communication system and the electronic communication device. The method comprises determining a link adaptation status for the electronic communication device, and transmitting information related to the determined link adaptation status to one or more network nodes of the radio communication system. A method of a network node, an electronic communication device, a network node, and computer programs are also disclosed.

Claims

1. A method of a network node of a radio communication system, wherein the radio communication system has capability of performing link adaptation by adapting one or more parameters of communication in view of a quality of a radio link between the network node of the radio communication system and an electronic communication device arranged to operate in the radio communication system, the method comprising:

determining whether it is allowed or forbidden for the electronic communication device to perform link adaptation, wherein it is determined that link adaptation is forbidden for the electronic communication device when the network node determines that the electronic communication device will perform a link adaptation that will result in a conflict between one or more link adaptation parameter targets of the network node and one or more link adaptation parameter targets of the electronic communication device; and

transmitting signalling to the electronic communication device, wherein the signalling comprises an indication whether link adaptation is allowed or forbidden for the electronic communication device, wherein the indication from the network node that link adaptation is forbidden instructs the electronic communication device to readily cause no link adaption to be applied;

receiving, from the electronic communication device, a link adaptation status for the electronic communication device; and

adapting link adaptation operations based on the received link adaptation status.

2. The method of claim 1, wherein the adapting of the link adaptation operations includes selecting modulation and coding scheme.

3. The method of claim 1, wherein the adapting of the link adaptation operations includes adjusting an outer loop link adaptation from decoding performance such that expected channel quality is corrected with a back-off value towards a predefined block error rate target.

4. The method of claim 1, wherein the adapting of the link adaptation operations includes adapting resource allocation for communication resources allocated to a link with the electronic communication device.

5. The method of claim 1, wherein the adapting of the link adaptation operations includes adapting scheduling for the communication with the electronic communication device.

6. The method of claim 5, wherein the adapting of scheduling comprises adapting package size for communication of a link with the electronic communication device.

7. The method of claim 1, comprising transmitting information to another network node of the radio communication system about the received link adaptation status.

8. The method of claim 1, comprising transmitting a request to the electronic communication device to determine the link adaptation status.

9. A non-transitory computer readable storage medium comprising instructions which, when executed on a processor of a network node of a radio communication system, causes the network node to perform a method, wherein the radio communication system has capability of performing link adaptation by adapting one or more parameters of communication in view of a quality of a radio link between the network node of the radio communication system and an electronic communication device arranged to operate in the radio communication system, the method comprising:

determining whether it is allowed or forbidden for the electronic communication device to perform link adaptation, wherein it is determined that link adaptation is forbidden for the electronic communication device when the network node determines that the electronic communication device will perform a link adaptation that will result in a conflict between one or more link adaptation parameter targets of the network node and one or more link adaptation parameter targets of the electronic communication device; and

transmitting signalling to the electronic communication device, wherein the signalling comprises an indication whether link adaptation is allowed or forbidden for the electronic communication device, wherein the indication from the network node that link adaptation is forbidden instructs the electronic communication device to readily cause no link adaption to be applied;

receiving, from the electronic communication device, a link adaptation status for the electronic communication device; and

adapting link adaptation operations based on the received link adaptation status.

10. A network node of a radio communication system, wherein the radio communication system has capability of performing link adaptation by adapting one or more parameters of communication in view of a quality of a radio link between the network node of the radio communication system and an electronic communication device arranged to operate in the radio communication system, wherein the network node is arranged to perform a comprising:

determining whether it is allowed or forbidden for the electronic communication device to perform link adaptation, wherein it is determined that link adaptation is forbidden for the electronic communication device when the network node determines that the electronic communication device will perform a link adaptation that will result in a conflict between one or more link adaptation parameter targets of the network node and one or more link adaptation parameter targets of the electronic communication device; and

transmitting signalling to the electronic communication device, wherein the signalling comprises an indication whether link adaptation is allowed or forbidden for the electronic communication device, wherein the indication from the network node that link adaptation is forbidden instructs the electronic communication device to readily cause no link adaption to be applied;

receiving, from the electronic communication device, a link adaptation status for the electronic communication device; and

adapting link adaptation operations based on the received link adaptation status.