Wireless Device, Network Node And Methods In A Wireless Communication System

• US 20190053061A1
• Filed: 03/16/2017
• Published: 02/14/2019
• Est. Priority Date: 03/16/2016
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Sui, Yutao, Adhikary, Ansuman, Bergman, Johan, Blankenship, Yufei, Grovlen, Asbjorn, Lin, Xingqin, Shokri Razaghi, Hazhir, Wang, Yi-Pin Eric
• Granted Patent: US 10,743,186 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/2657 Carrier synchronisation
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 56/0025 synchronizing potentially movable access points
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

Embodiments herein relate for example to a method performed by a wireless device in a first wireless communication system that is deployed on a frequency resource. The wireless device receives information indicating a PRB offset and a corresponding channel raster offset. The channel raster offset is an offset in frequency between a channel raster, used by the wireless device (105) in a cell search process, and the frequency resource. The PRB offset indicates an offset between the frequency resource and an inner frequency resource on which a second wireless communication system is deployed. In the frequency domain, the second wireless communication system is deployed on at least one higher frequency resource above the inner frequency resource and at least one lower frequency resource below the inner frequency resource. The wireless device determines, based on the received information, an adjustment in frequency applicable for the frequency resource on which the first wireless communication system is deployed.

Claims

1-22. -22. (canceled)

23. A method performed by a wireless device in a first wireless communication system that is deployed on a physical resource block (PRB), the method comprising the wireless device:

receiving information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by the wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and a middle PRB on which a second wireless communication system is deployed;

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB; and

determining, based on the received information, an adjustment in frequency applicable for the PRB on which the first wireless communication system is deployed.

24. The method of claim 23, further comprising the wireless device receiving, during the cell search process using the channel raster, a synchronization signal of the first wireless communication system.

25. The method of claim 23, wherein the received information enables the wireless device to determine, based on the PRB offset, cell-specific reference signal (CRS) information of the second communication system and to use this information for channel estimation in the first wireless communication system.

26. The method of claim 23, wherein the receiving the information comprises receiving a master information block (MIB) of the first wireless communication system, which MIB comprises five bits indicating the PRB offset and the corresponding channel raster offset.

27. The method of claim 23, wherein the information comprises an index indicating the PRB offset and the corresponding channel raster offset.

28. A method performed by a network node in a first wireless communication system that is deployed on a physical resource block (PRB), the method comprising the network node:

transmitting information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by the wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and a middle PRB on which a second wireless communication system is deployed; and

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB.

29. The method of claim 28, further comprising the network node transmitting a synchronization signal to be received by a wireless device during the cell search process.

30. The method of claim 28, further comprising the network node:

determining the channel raster offset and the PRB offset for the PRB on which the first wireless communication system is deployed; and

generating the information indicating the determined PRB offset and the corresponding channel raster offset.

31. The method of claim 28, wherein the transmitting the information comprises transmitting a master information block (MIB) of the first wireless communication system, which MIB comprises five bits indicating the PRB offset and the corresponding channel raster offset.

32. The method of claim 28, wherein the information comprises an index indicating the PRB offset and the corresponding channel raster offset.

33. A wireless device for a first wireless communication system that is deployed on a physical resource block (PRB), the wireless device comprising:

processing circuitry;

memory containing instructions executable by the processing circuitry whereby the wireless device is operative to;

receive information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by the wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and a middle PRB on which a second wireless communication system is deployed;

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB; and

determine, based on the received information, an adjustment in frequency applicable for the PRB on which the first wireless communication system is deployed.

34. The wireless device of claim 33, wherein the instructions are such that the wireless device is operative to receive, during the cell search process using the channel raster, a synchronization signal of the first wireless communication system.

35. The wireless device of claim 33, wherein receiving the information indicating the PRB offset and the corresponding channel raster offset enables the wireless device to determine, based on the PRB offset, cell-specific reference signal (CRS) information of the second communication system;

and to use this information for channel estimation in the first wireless communication system.

36. The wireless device of claim 33, wherein the instructions are such that the wireless device is operative to receive the information receiving a master information block (MIB) of the first wireless communication system, which MIB comprises five bits indicating the PRB offset and the corresponding channel raster offset.

37. The wireless device of claim 33, wherein the information comprises an index indicating the PRB offset and the corresponding channel raster offset.

38. A network node for a first wireless communication system that is deployed on a physical resource block (PRB), the network node comprising:

processing circuitry;

memory containing instructions executable by the processing circuitry whereby the network node is operative to;

transmit information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by a wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and an middle PRB on which a second wireless communication system is deployed; and

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB.

39. The network node of claim 38, wherein the instructions are such that the network node is operative to transmit a synchronization signal to be received by the wireless device during the cell search process.

40. The network node of claim 38, wherein the instructions are such that the network node is operative to:

determine the channel raster offset and the PRB offset for the PRB on which the first wireless communication system is deployed; and

generate the information indicating the determined PRB offset and the corresponding channel raster offset.

41. The network node of claim 38, wherein the instructions are such that the network node is operative to transmit the information by transmitting a master information block (MIB) of the first wireless communication system, which MIB comprises five bits indicating the PRB offset and the corresponding channel raster offset.

42. The network node of claim 38, wherein the information comprises an index indicating the PRB offset and the corresponding channel raster offset.

43. A non-transitory computer readable recording medium storing a computer program product for controlling a wireless device in a first wireless communication system that is deployed on a physical resource block (PRB), the computer program product comprising software instructions which, when run on processing circuitry of the wireless device, causes the wireless device to:

receive information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by the wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and a middle PRB on which a second wireless communication system is deployed;

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB; and

determine, based on the received information, an adjustment in frequency applicable for the PRB on which the first wireless communication system is deployed.

44. A non-transitory computer readable recording medium storing a computer program product for controlling a network node in a first wireless communication system that is deployed on a physical resource block (PRB), the computer program product comprising software instructions which, when run on processing circuitry of the network node, causes the network node to:

transmit information indicating a PRB offset and a corresponding channel raster offset;

wherein the channel raster offset is an offset in frequency between a channel raster, used by the wireless device in a cell search process, and the PRB;

wherein the PRB offset indicates an offset between the PRB and a middle PRB on which a second wireless communication system is deployed; and

wherein, in the frequency domain, the second wireless communication system is deployed on at least one higher PRB above the middle PRB and at least one lower PRB below the middle PRB.