METHOD AND APPARATUS FOR CONFIGURING POSITION OF FREQUENCY RESOURCE

• US 20170013581A1
• Filed: 09/20/2016
• Published: 01/12/2017
• 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
• Granted Patent: US 10,506,538 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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:

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

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. The method according to claim 2, wherein the first device configures a frequency resource of an edge of a frequency band, wherein the frequency resource is used to transmit data, and wherein in a case in which the first device is synchronous with the second device, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₁ makes G₁ meet a condition G₁<

G_a.

5. The method according to claim 1, wherein the first device configures a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data, and wherein in a case in which the first device is not synchronous with the second device, 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, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₁ makes G₁ meet a condition G₁<

G_a.

6. The method according to claim 5, wherein that after the second device receives a notification from the first device, the second device configures a frequency resource used to transmit data is characterized in that:

assuming that 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 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 F₂ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₂ makes G₂ meet a condition G₂>

G_a2.

7. The method according to claim 1, wherein the position of the frequency resource used to transmit data by the first device is further characterized in that:

a maximum level of spurious emission of a signal of the first device is L₁, wherein a value of L₁ is characterized in that;

L₁>

L_a, wherein L_a is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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 level of spurious emission of the signal of the first device is characterized in that;

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

or

the level of spurious emission is 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 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.

8. The method according to claim 6, wherein a position of the frequency resource used to transmit data by the second device is further characterized in that:

a maximum level of spurious emission of a signal of the second device is L₂, wherein a value of L₂ is characterized in that;

L₂<

L_a2, wherein L_a2 is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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 level of spurious emission of the signal of the second device is characterized in that;

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

or

the level of spurious emission is 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 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, the level of spurious emission is a result of accumulation, inside the measurement bandwidth, of measured values inside the resolution bandwidth.

9. A first device, comprising:

an acquiring unit, configured to acquire synchronization information of a second device;

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

a configuration unit, configured to configure a frequency resource close to an edge of a frequency band according to the synchronization information of the second device that is output by a determining and a adjustment unit, wherein the frequency resource is used to transmit data;

a transmission scheduling unit, configured to schedule and use the configured frequency resource to transmit data;

a first sending unit, configured to notify first user equipment that a transmission frequency resource of the first device changes;

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

a second sending unit, configured to;

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 a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data.

10. The first device according to claim 9, wherein that the configuration unit configures a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data is characterized in that:

in a case in which the first device is synchronous with the second device, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₁ makes G₁ meet a condition G₁<

G_a.

11. The first device according to claim 9, wherein the configuration unit configures a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data, wherein

in a case in which the first device is not synchronous with the second device, 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, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₁ makes G₁ meet a condition G₁<

G_a.

12. The first device according to claim 9, wherein the configuration unit is characterized in that:

that the first device configures a position of a frequency resource used to transmit data is characterized in that;

a maximum level of spurious emission of a signal of the first device is L₁, wherein a value of L₁ is characterized in that;

L₁>

L_a, wherein L_a is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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 the configuration unit is characterized in that;

a level of spurious emission of the signal of the first device is characterized in that;

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

or

the level of spurious emission is 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 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.

13. 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,

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 communications interface, and schedule and use the configured frequency resource to transmit data,

notify, by using the at least one communications interface, 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 a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data.

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

configure a frequency resource close to an edge of a frequency band, wherein the frequency resource is used to transmit data, wherein in a case in which the first device is synchronous with the second device, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₁ makes G₁ meet a condition G₁<

G_a.

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

in a case in which the first device is not synchronous with the second device, 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, assuming that a frequency at a boundary between frequency bands of the first device and the second device is F_B, and 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, a frequency distance to F_B is G₁=|F₁−

F_B|, wherein F₁ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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|;

a value of F₁ makes G₁ meet a condition G₁<

G_a.

16. The first device according to claim 13, wherein that the processor of the first device configures a position of a frequency resource used to transmit data is characterized in that:

a maximum level of spurious emission of a signal of the first device is L₁, wherein a value of L₁ is characterized in that;

L₁>

L_a, wherein L_a is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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 level of spurious emission of the signal of the first device is characterized in that;

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

or

the level of spurious emission is 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 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.

17. 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,

receive a notification from the first device by using the at least one communications interface, wherein when the first device is not synchronous with the second device, the first device notifies the second device that the first device is not in time synchronization with the second device, and 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.

18. The second device according to claim 17, wherein the processor is further configured to:

after the notification of the first device is received, configure a frequency resource used to transmit data, wherein assuming that 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 F₂ is characterized in that;

assuming that first user equipment and second user equipment communicate with the first device and the second device respectively, 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

a value of F₂ makes G₂ meet a condition G₂>

G_a2.

19. The second device according to claim 18, 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, assuming that first user equipment and second user equipment communicate with the first device and the second device, respectively, 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;

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

or

a level of spurious emission is 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 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 is a result of accumulation, inside the measurement bandwidth, of measured values inside the resolution bandwidth.

20. First user equipment, 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;

receive a notification from a first device by using at least one communications interface, wherein the notification notifies the first user equipment that a transmission frequency resource of the first device changes, and

after the notification, notify that a transmission frequency resource of the first device changes is received, needing to feed back a transmission capability of the first user equipment to the first device by using the at least one communications interface.