# US 8,275,385 B2 · Method and arrangement for allocating radio resources in a communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,275,385 B2 - Document ID: US8275385B2 - Status: Granted - Kind: B2 - Application number: 12/443,719 - Filed: 2007-10-09 - Published: 2010-01-21 - Granted: 2012-09-25 - Earliest claimed: 2006-10-27 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Bo Göransson; Stephen Grant; George Jöngren - Web page: https://patentgrep.com/patent/US8275385B2 ## CPC - H04W 72/542: using measured or perceived quality - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/0029: {Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling (power control H04W52/04)} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present invention relates to a method and an arrangement of facilitating the allocation of radio resources in a communication network, comprising a communication network node (15) communicating with said user equipment (18) by means of data streams over a radio interface on radio channels. A channel quality message having a length of a predefined number of bits is provided comprising information which is used for comparing an obtained channel quality if a single data stream transmission is selected or if a multi data stream transmission is selected for said communication. The available radio resources are then allocated based on said channel quality message. ## Claims ### Claim 1 A method, performed at a user equipment, of facilitating radio resource allocation in a communication network comprising a communication network node communicating with said user equipment via data streams over a radio interface on radio channels, the method comprising: preparing a channel quality message having a length of a pre-defined number of bits, the channel quality message comprising: information that a network node in a communication network will use in a comparison to determine an obtained channel quality based on whether the network node selects a single data stream transmission, or a multi data stream transmission, for communicating with the user equipment; and an indication of how many data streams the user equipment is requesting; and transmitting the channel quality message to the network node so that the network node can allocate available radio resources based on the channel quality message. ### Claim 2 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises using one bit of the channel quality message to indicate how many data streams the user equipment is requesting. ### Claim 3 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises using sequences in the channel quality message to indicate how many data streams said user equipment is requesting. ### Claim 4 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises scrambling the channel quality message using different techniques to indicate how many data streams said user equipment is requesting. ### Claim 5 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises including a channel quality indicator to indicate a first data stream if a multi stream transmission is indicated, and including information to indicate a difference between the channel quality of the first data stream and one or more second data streams. ### Claim 6 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises including a channel quality indicator to indicate a first data stream if a single stream transmission is indicated, and including information indicating how much worse the channel quality will be if the network node selects a multi stream transmission to communicate with the user equipment. ### Claim 7 (depends on 1) The method of claim 1 wherein preparing a channel quality message comprises including a first channel quality indicator in the channel quality message for a first data stream, and including a second channel quality indicator in the channel quality message for at least one second data stream. ### Claim 8 A method, performed at a network node, of facilitating radio resource allocation in a communication network comprising the network node, wherein the network node communicates with a user equipment via data streams over a radio interface on radio channels, the method comprising: receiving a channel quality message from a user equipment, the channel quality message having a length of a pre-defined number of bits and comprising: information that will be used by the network node in a comparison to determine an obtained channel quality based on whether the network node selects a single data stream transmission, or a multi data stream transmission, to communicate with the user equipment; and an indication of how many data streams the user equipment is requesting; and allocating available radio resources based on the channel quality message. ### Claim 9 A user equipment that facilitates radio resource allocation in a communication network having a network node communicating with the user equipment via data streams over a radio interface on radio channels, the user equipment comprising: a reporting function configured to prepare a channel quality message to have a length of a pre-defined number of bits, and to comprise: information that a network node in a communication network will use in a comparison to determine an obtained channel quality based on whether the network node selects a single data stream transmission, or a multi data stream transmission, for communicating with the user equipment; and an indication of how many data streams the user equipment is requesting; and a transmitter configured to transmit the channel quality message to the network node so that the network node can allocate available radio resources based on the channel quality message. ### Claim 10 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to include one bit in the channel quality message to indicate how many data streams the user equipment is requesting. ### Claim 11 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to include sequences in the channel quality message to indicate how many data streams the user equipment is requesting. ### Claim 12 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to scramble the channel quality message in different ways to indicate how many data streams the user equipment is requesting. ### Claim 13 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to include a channel quality indicator for a first data stream if a multi stream transmission is indicated, and include information indicating a difference between the channel quality of the first data stream and one or more second data streams. ### Claim 14 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to include a channel quality indicator for a first data stream if a single stream transmission is indicated, and include information indicating how much worse the channel quality will be if the network node selects a multi stream transmission to communicate with the user equipment. ### Claim 15 (depends on 9) The user equipment of claim 9 wherein the reporting function is configured to include a first channel quality indicator in the channel quality message for a first data stream, and include a second channel quality indicator in the channel quality message for at least one second data stream. ### Claim 16 A network node for facilitating radio resource allocation in a communication network including the network node, wherein the network node communicates with a user equipment via data streams over a radio interface on radio channels, the network node comprising: a receiver configured to receive a channel quality message from a user equipment, the channel quality message having a length of a pre-defined number of bits and comprising: information that will be used by the network node in a comparison to determine an obtained channel quality based on whether the network node selects a single data stream transmission, or a multi data stream transmission, to communicate with the user equipment; and an indication of how many data streams the user equipment is requesting; and a resource allocation function configured to allocate available radio resources based on the channel quality message.