Systems and Methods for Improving Uplink Transmission Properties in a Communication Network

• US 20150326287A1
• Filed: 10/18/2013
• Published: 11/12/2015
• Est. Priority Date: 11/14/2012
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Kazmi, Muhammad, Aulin, Jocelyn, Bria, Aurelian
• Application Number:
  US14/440,771
• Publication Number:
  US 20150326287A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/281 taking into account user or data type priority
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Embodiments are directed to improving uplink transmission properties in a communication network. In one aspect a method for improving uplink transmission properties is disclosed that includes: obtaining information indicating an operating scenario of a UE, wherein the UE includes a plurality of antennas and the UE is configured to transmit UL signals using the plurality of antennas; selecting a precoder that is optimized for UL multiple antenna transmission based on at least the indicated operating scenario; and communicating the precoder to the UE. The information indicating an operating scenario comprises information indicating one or more of: i) a deployment characteristic on which the UE operates, ii) a cell change scenario, iii) a radio transmission characteristic of the UE, iv) a number of links that are involved in UL transmissions from the UE, and v) a type of service used by the UE.

Claims

1-32. -32. (canceled)

33. A method performed by a network node for improving uplink transmission properties in a communication network, comprising:

obtaining information indicating an operating scenario of a user equipment, UE, served by the network node, wherein the UE includes a plurality of antennas and the UE is configured to transmit uplink, UL, signals using the plurality of antennas;

selecting a precoder that is optimized for UL multiple antenna transmission based on at least the indicated operating scenario; and

communicating the precoder to the UE;

wherein the information indicating an operating scenario comprises information indicating one or more of;

i) a deployment characteristic on which the UE operates, ii) a cell change scenario, iii) a radio transmission characteristic of the UE, iv) a number of links that are involved in UL transmissions from the UE, and v) a type of service used by the UE.

34. The method of claim 33, wherein selecting the precoder is further based on information received from another network node, wherein the information comprises information identifying one or more of:

a recommended precoder to be used and precoders used in other radio nodes involved in UL transmissions from the UE.

35. The method of claim 33, wherein the information indicating an operating scenario comprises information indicating a deployment characteristic on which the UE operates.

36. The method of claim 35, wherein the information indicating a deployment characteristic on which the UE operates comprises information indicating a deployment characteristic of a cell on which the UE operates, the deployment characteristic of the cell being one of:

the size of a cell served by a radio node serving the UE, the receiver sensitivity of the radio node, a power class of the radio node, a power level of the radio node, UE location in the cell, and UE radio measurements.

37. The method of claim 33, wherein the information indicating an operating scenario comprises information indicating a radio transmission characteristic of the UE.

38. The method of claim 37, wherein the information indicating a radio transmission characteristic of the UE comprises one or more of:

i) information indicating a transmit power of the UE and ii) information pertaining to a power source used to power the UE.

39. A network node for improving uplink transmission properties in a communication network, the network node being adapted to:

obtain information indicating an operating scenario of a user equipment, UE, served by the network node, wherein the UE includes a plurality of antennas and the UE is configured to transmit uplink, UL, signals using the plurality of antennas;

select a precoder that is optimized for UL multiple antenna transmission based on at least the indicated operating scenario; and

communicate the precoder to the UE;

wherein the information indicating an operating scenario comprises information indicating one or more of;

i) a deployment characteristic on which the UE operates, ii) a cell change scenario, iii) a radio transmission characteristic of the UE, iv) a number of links that are involved in UL transmissions from the UE. and v) a type of service used by the UE.

40. The network node of claim 39, wherein:

the information indicating an operating scenario comprises information indicating a deployment characteristic on which the UE operates,

the information indicating a deployment characteristic on which the UE operates comprises information indicating a deployment characteristic of a cell on which the UE operates, the deployment characteristic of the cell being one of;

the size of a cell served by a radio node serving the UE, the receiver sensitivity of the radio node, a power class of the radio node, a power level of the radio node, UE location in the cell, and UE radio measurements.

41. A user equipment, UE, for improving uplink transmission properties in a communication network, the UE being adapted to:

obtain a precoder for use in uplink multiple antenna transmissions from said UE, wherein said precoder is based on information indicating an operating scenario of said UE;

apply said precoder to an uplink data transmission; and

transmit the uplink data transmission using at least two transmit antennas.

42. The UE of claim 41, wherein:

the information indicating the operating scenario of said UE comprises information indicating a deployment characteristic on which the UE operates, and

the information indicating a deployment characteristic on which the UE operates comprises information indicating a deployment characteristic of a cell on which the UE operates, the deployment characteristic of the cell being one of;

the size of a cell served by a radio node serving the UE, the receiver sensitivity of the radio node, a power class of the radio node, and a power level of the radio node.

43. The UE of claim 41, wherein the information indicating the operating scenario of said UE comprises information indicating a radio transmission characteristic of the UE.

44. The UE of claim 43, wherein the information indicating the radio transmission characteristic of the UE comprises one or more of:

i) information indicating a transmit power of the UE and ii) information pertaining to a power source used to power the UE.

45. A network node for improving uplink transmission properties in a communication network, comprising:

a processor; and

a memory, said memory containing instructions executable by said processor, whereby said network node is operative to;

obtain information indicating an operating scenario of a user equipment, UE, served by the network node, wherein the UE includes a plurality of antennas and the UE is configured to transmit uplink, UL, signals using the plurality of antennas;

select a precoder that is optimized for UL multiple antenna transmission based on at least the indicated operating scenario; and

communicate the precoder to the UE;

wherein the information indicating an operating scenario comprises information indicating one or more of;

i) a deployment characteristic on which the UE operates, ii) a cell change scenario, iii) a radio transmission characteristic of the UE, iv) a number of links that are involved in UL transmissions from the UE, and v) a type of service used by the UE.

46. The network node of claim 45, wherein:

the information indicating an operating scenario comprises information indicating a deployment characteristic on which the UE operates;

the information indicating a deployment characteristic on which the UE operates comprises information indicating a deployment characteristic of a cell on which the UE operates, the deployment characteristic of the cell being one of;

the size of a cell served by a radio node serving the UE, the receiver sensitivity of the radio node, a power class of the radio node, a power level of the radio node, UE location in the cell, and UE radio measurements.

47. The network node of claim 45, wherein the information indicating an operating scenario comprises information indicating a radio transmission characteristic of the UE.

48. The network node of claim 47, wherein the information indicating a radio transmission characteristic of the UE comprises one or more of:

i) information indicating a transmit power of the UE and ii) information pertaining to a power source used to power the UE.

49. A user equipment, UE, for improving uplink transmission properties in a communication network, comprising:

a first transmit antenna;

a second transmit antenna;

a processor; and

a memory, said memory containing instructions executable by said processor, whereby said UE is operative to;

obtain a precoder for use in uplink multiple antenna transmissions from said UE, wherein said precoder is based on information indicating an operating scenario of said UE;

apply said precoder to an uplink data transmission; and

transmit the uplink data transmission using the first and second transmit antennas.

50. The UE of claim 49, wherein:

the information indicating the operating scenario comprises information indicating a deployment characteristic on which the UE operates; and

the information indicating the deployment characteristic on which the UE operates comprises information indicating a deployment characteristic of a cell on which the UE operates, the deployment characteristic of the cell being one of;

the size of a cell served by a radio node serving the UE, the receiver sensitivity of the radio node, a power class of the radio node, and a power level of the radio node.

51. The UE of claim 49, wherein the information indicating the operating scenario comprises information indicating a radio transmission characteristic of the UE.

52. The UE of claim 51, wherein the information indicating the radio transmission characteristic of the UE comprises one or more of:

i) information indicating a transmit power of the UE and ii) information pertaining to a power source used to power the UE.