Method and apparatus for configuring position of frequency resource

• US 10,506,538 B2
• Filed: 09/20/2016
• Issued: 12/10/2019
• Est. Priority Date: 03/21/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Dai, Xizeng, Fan, Xiaoan, Cui, Jie, Zheng, Juan
• Primary Examiner(s): Latorre, Ivan O
• Application Number:
  US15/271,018
• Publication Number:
  US 20170013581A1
• Time in Patent Office: 1,176 Days
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/0025 synchronizing potentially movable access points
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method and an apparatus are used to configure a position of a transmission frequency resource according to a synchronization relationship between devices, includes: adjusting, by a first device, synchronization according to synchronization information of a second device, in a case in which the first device is synchronous with the second device, or the second device can adjust a configured frequency resource, configuring a frequency resource close to an edge of a frequency band, where the frequency resource is used to transmit data, and notifying first user equipment; in a case in which the devices are synchronous, adjusting, by the first device and the second device, a start moment or an end moment of transmitting or receiving a signal; and using, by the first device in a manner of extending a bandwidth of a carrier frequency or a manner of carrier aggregation.

Claims

1. A method for configuring a position of a frequency resource, the method comprising:

acquiring, by a first device, synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

configuring, by the first device according to the synchronization information of the second device, a position of a frequency resource used to transmit data; and

communicating, by the first device, with a first user equipment according to the position of the frequency resource used to transmit data;

wherein the second device communicates with a second user equipment;

wherein when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a maximum level of spurious emission inside a measurement bandwidth at an edge of a frequency band of a first device meeting a coexistence requirement is L_a;

wherein a maximum level of spurious emission of a signal of the first device is L₁, and L₁ is greater than L_a;

wherein;

the level of spurious emission corresponds to spurious emission measured inside the measurement bandwidth at the edge of the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band, of the second device, adjacent to the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth across the edge of the frequency band of the first device and an edge of a frequency band of the second device.

2. The method according to claim 1, wherein:

at least one of the first device or the second device uses a time division duplex technology; and

frequency bands of the first device and the second device are adjacent.

3. The method according to claim 1, further comprising:

determining, by the first device, a synchronization status between the first device and the second device according to the synchronization information of the second device.

4. A method for configuring a position of a frequency resource, the method comprising:

acquiring, by a first device, synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is reliable,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether clock synchronization of the second device is from reliable network listening,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

configuring, by the first device according to the synchronization information of the second device, a position of a frequency resource used to transmit data;

communicating, by the first device, with a first user equipment according to the position of the frequency resource used to transmit data; and

configuring, by the first device, a frequency resource of an edge of a frequency band;

wherein at least one of the first device or the second device uses a time division duplex technology;

wherein frequency bands of the first device and the second device are adjacent;

wherein when the first device is synchronous with the second device, a frequency at a boundary between the frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster closest to F_B in the frequency resource, and a frequency distance to F_B is G₁=|F_a−

F_B|;

wherein the second device communicates with a second user equipment, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

5. A method for configuring a position of a frequency resource, the method comprising:

acquiring, by a first device, synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is reliable,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether clock synchronization of the second device is from reliable network listening,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

configuring, by the first device according to the synchronization information of the second device, a position of a frequency resource used to transmit data;

communicating, by the first device, with a first user equipment according to the position of the frequency resource used to transmit data; and

configuring, by the first device, a frequency resource close to an edge of a frequency band;

wherein when the first device is not synchronous with the second device, and when the second device can configure, according to the frequency resource configured by the first device, a frequency resource used to transmit data by the second device, a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G₁=|F₁−

F_B|;

wherein the second device communicates with a second user equipment, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

6. The method according to claim 5, wherein a frequency F₂ is a frequency raster, closest to F_B, in the frequency resource that is configured by the second device and that is used to transmit data, and a frequency distance to F_B is G₂=|F₂−

F_B|;

wherein when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a2 is a frequency raster, closest to F_B, in the frequency resource that is configured by the second device and that is used to transmit data, and a frequency distance to F_B is G_a2=|F_a2−

F_B|; and

wherein a value of F₂ makes G₂ meet a condition G₂>

G_a2.

7. The method according to claim 6, wherein when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a maximum level of spurious emission inside a measurement bandwidth at an edge of a frequency band of a first device meeting a coexistence requirement is L_a2;

wherein a maximum level of spurious emission of a signal of the second device is L₂, and L₂ is less than L_a2;

and

wherein;

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band of the second device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band, of the second device, adjacent to the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth across the edge of the frequency band of the first device and an edge of a frequency band of the second device;

or

when a resolution bandwidth is less than a measurement bandwidth, the level of spurious emission corresponds to a result of accumulation, inside the measurement bandwidth, of measured values inside the resolution bandwidth.

8. A first device, comprising:

a memory; and

a processor in communication with the memory, wherein the processor is configured to;

acquire synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

determine a synchronization status between the first device and the second device according to the synchronization information of the second device, adjust a synchronization relationship between the first device and the second device, and set a synchronization status of the first device;

configure a frequency resource close to an edge of a frequency band according to the synchronization information of the second device, wherein the frequency resource is used to transmit data;

schedule and use the configured frequency resource to transmit data;

notify a first user equipment that a transmission frequency resource of the first device changes;

receive feedback information of the first user equipment, wherein the feedback information is a fed-back receiving capability of the first user equipment; and

when the first device is not synchronous with the second device, notify the second device that the first device is not in time synchronization with the second device, and the first device has configured the frequency resource close to the edge of the frequency band;

wherein the first user equipment and a second user equipment communicate with the first device and the second device respectively, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a maximum level of spurious emission inside a measurement bandwidth at an edge of a frequency band of a first device meeting a coexistence requirement is L_a;

wherein a maximum level of spurious emission of a signal of the first device is L₁, and L₁ is greater than L_a;

wherein;

the level of spurious emission corresponds to spurious emission measured inside the measurement bandwidth at the edge of the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band, of the second device, adjacent to the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth across the edge of the frequency band of the first device and an edge of a frequency band of the second device.

9. A first device, comprising:

a memory; and

a processor in communication with the memory, wherein the processor is configured to;

acquire synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is reliable,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether clock synchronization of the second device is from reliable network listening,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

determine a synchronization status between the first device and the second device according to the synchronization information of the second device, adjust a synchronization relationship between the first device and the second device, and set a synchronization status of the first device;

configure a frequency resource close to an edge of a frequency band according to the synchronization information of the second device, wherein the frequency resource is used to transmit data;

schedule and use the configured frequency resource to transmit data;

notify a first user equipment that a transmission frequency resource of the first device changes;

receive feedback information of the first user equipment, wherein the feedback information is a fed-back receiving capability of the first user equipment; and

when the first device is not synchronous with the second device, notify the second device that the first device is not in time synchronization with the second device, and the first device has configured the frequency resource close to the edge of the frequency band;

wherein when the first device is synchronous with the second device, a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G₁=|F₁−

F_B|,

wherein the first user equipment and a second user equipment communicate with the first device and the second device respectively, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

10. A first device, comprising:

a memory; and

a processor in communication with the memory, wherein the processor is configured to;

acquire synchronization information of a second device, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is reliable,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether clock synchronization of the second device is from reliable network listening,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

determine a synchronization status between the first device and the second device according to the synchronization information of the second device, adjust a synchronization relationship between the first device and the second device, and set a synchronization status of the first device;

configure a frequency resource close to an edge of a frequency band according to the synchronization information of the second device, wherein the frequency resource is used to transmit data;

schedule and use the configured frequency resource to transmit data;

notify a first user equipment that a transmission frequency resource of the first device changes;

receive feedback information of the first user equipment, wherein the feedback information is a fed-back receiving capability of the first user equipment; and

when the first device is not synchronous with the second device, notify the second device that the first device is not in time synchronization with the second device, and the first device has configured the frequency resource close to the edge of the frequency band;

wherein when the first device is not synchronous with the second device, and when the second device can configure, according to the frequency resource configured by the first device, a frequency resource used to transmit data by the second device, a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G₁=|F₁−

F_B|; and

wherein the first user equipment and a second user equipment communicate with the first device and the second device respectively, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

11. A first device, comprising:

at least one processor, a memory configured to store program code, a communications interface, and a bus, wherein the at least one processor, the memory, and the communications interface are connected to and communicate with each other by using the bus; and

wherein the processor is configured to invoke the program code in the memory to;

acquire synchronization information of a second device by using at least one communications interface, wherein the synchronization information of the second device includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

configure a frequency resource close to an edge of a frequency band according to the synchronization information of the second device, wherein the frequency resource is used to transmit data;

schedule and use the at least one communications interface, and schedule and use the configured frequency resource to transmit data;

notify, by using the at least one communications interface, a first user equipment that a transmission frequency resource of the first device changes;

receive feedback information of the first user equipment by using the at least one communications interface, wherein the feedback information is a fed-back receiving capability of the first user equipment; and

when the first device is not synchronous with the second device, notify, by using the at least one communications interface, the second device that the first device is not in time synchronization with the second device, and the first device has configured the frequency resource close to the edge of the frequency band;

wherein the first user equipment and a second user equipment communicate with the first device and the second device respectively, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a maximum level of spurious emission inside a measurement bandwidth at an edge of a frequency band of a first device meeting a coexistence requirement is L_a;

wherein a maximum level of spurious emission of a signal of the first device is L₁, and L₁ is greater than L_a;

wherein;

the level of spurious emission corresponds to spurious emission measured inside the measurement bandwidth at the edge of the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band, of the second device, adjacent to the frequency band of the first device;

or

the level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth across the edge of the frequency band of the first device and an edge of a frequency band of the second device.

12. The first device according to claim 11,

wherein when the first device is synchronous with the second device, a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G₁=|F₁−

F_B|;

wherein when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

13. The first device according to claim 11, wherein the processor is further configured to:

when the first device is not synchronous with the second device, and when the second device can configure, according to the frequency resource configured by the first device, a frequency resource used to transmit data by the second device, a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₁ is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G₁=|F₁−

F_B|;

wherein when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a is a frequency raster, closest to F_B, in the frequency resource that is configured by the first device and that is used to transmit data, and a frequency distance to F_B is G_a=|F_a−

F_B|; and

wherein a value of F₁ makes G₁ meet a condition G₁<

G_a.

14. A second device, comprising:

at least one processor, a memory configured to store program code, a communications interface, and a bus, wherein the at least one processor, the memory, and the communications interface are connected to and communicate with each other by using the bus; and

wherein the processor is configured to invoke the program code in the memory to;

notify, by using at least one communications interface, a first device that the second device has a capability of configuring, according to a frequency resource configured by the first device, a frequency resource used to transmit data by the second device, and sending, to the first device, synchronization information of the second device that includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

receive a notification from the first device by using the at least one communications interface, wherein the notification indicates that that the first device is not in time synchronization with the second device, and that the first device has configured a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data; and

after the notification of the first device is received, configure a frequency resource used to transmit data;

wherein a frequency at a boundary between frequency bands of the first device and the second device is F_B, a frequency F₂ is a frequency raster, closest to F_B, in a frequency resource that is configured by the second device and that is used to transmit data, and a frequency distance to F_B is G₂=|F₂−

F_B|;

wherein the first user equipment and a second user equipment communicate with the first device and the second device respectively, and when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a frequency F_a2 is a frequency raster, closest to F_B, in the frequency resource that is configured by the second device and that is used to transmit data, and a frequency distance to F_B is G_a2=|F_a2−

F_B|; and

wherein a value of F₂ makes G₂ meet a condition G₂>

G_a2.

15. A second device, comprising:

at least one processor, a memory configured to store program code, a communications interface, and a bus, wherein the at least one processor, the memory, and the communications interface are connected to and communicate with each other by using the bus; and

wherein the processor is configured to invoke the program code in the memory to;

notify, by using at least one communications interface, a first device that the second device has a capability of configuring, according to a frequency resource configured by the first device, a frequency resource used to transmit data by the second device, and sending, to the first device, synchronization information of the second device that includes indication information for at least one of the following synchronization statuses;

whether the second device is synchronous with a preset time,

whether clock synchronization of the second device is directly from clock synchronization of a wired network,

whether a level of clock synchronization of the second device is less than a set threshold, or

whether precision of clock synchronization of the second device is greater than a set threshold;

receive a notification from the first device by using the at least one communications interface, wherein the notification indicates that that the first device is not in time synchronization with the second device, and that the first device has configured a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data; and

after the notification of the first device is received, configure a frequency resource used to transmit data;

wherein;

a maximum level of spurious emission of a signal of the second device is L₂, wherein a value of L₂ is L₂<

L_a2, wherein L_a2 is, when uplink-to-downlink interference exists between any first user equipment and any second user equipment, a maximum level of spurious emission inside a measurement bandwidth at an edge of a frequency band of a first device meeting a coexistence requirement;

or

a level of spurious emission of a signal configured by the processor of the second device corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band of the second device;

or

a level of spurious emission corresponds to spurious emission measured inside a measurement bandwidth at an edge of a frequency band, of the second device, adjacent to the frequency band of the first device;

or

a level of spurious emission corresponds to is-spurious emission measured inside a measurement bandwidth across the edge of the frequency band of the first device and an edge of a frequency band of the second device;

or

when a resolution bandwidth is less than a measurement bandwidth, a level of spurious emission corresponds to a result of accumulation, inside the measurement bandwidth, of measured values inside the resolution bandwidth.