WO2017096557A1 - 一种基带单元之间时钟同步的方法、装置及*** - Google Patents

一种基带单元之间时钟同步的方法、装置及*** Download PDF

Info

Publication number
WO2017096557A1
WO2017096557A1 PCT/CN2015/096809 CN2015096809W WO2017096557A1 WO 2017096557 A1 WO2017096557 A1 WO 2017096557A1 CN 2015096809 W CN2015096809 W CN 2015096809W WO 2017096557 A1 WO2017096557 A1 WO 2017096557A1
Authority
WO
WIPO (PCT)
Prior art keywords
clock
clock source
bbu
bbus
source
Prior art date
Application number
PCT/CN2015/096809
Other languages
English (en)
French (fr)
Inventor
王玉仁
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/096809 priority Critical patent/WO2017096557A1/zh
Priority to CN201580085130.2A priority patent/CN108370612B/zh
Publication of WO2017096557A1 publication Critical patent/WO2017096557A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device, and system for clock synchronization between baseband units BBU.
  • the baseband unit (BBU) and the radio remote unit (RRU) are the basic components of the base station.
  • the BBU is usually placed in the equipment room, the RRU can be installed to the floor, and the connection between the BBU and the RRU is used.
  • the radio frame number of the BBU output of different standards is required to be completely synchronized with the phase of 10 ms, that is, the clock synchronization is guaranteed to ensure the correctness of data processing.
  • the radio frame number refers to the radio frame number on the Common Public Radio Interface (CPRI) interface, which is incremented every 10ms.
  • 10ms is the frame length of the radio frame
  • the 10ms phase refers to the wireless transmission between the BBU and the RRU. The phase relationship of the frame.
  • Clock synchronization also known as time synchronization, refers to the synchronization of the absolute clock, which requires the start of the signal to be consistent with the Coordinated Universal Time (UTC) clock.
  • the clock synchronization in this paper refers to the synchronization of the wireless frame number between the BBUs and the phase alignment of 10ms.
  • the embodiment of the present invention provides a method for clock synchronization between baseband units, which can be added without Under the premise of hardware, the clocks between the BBUs are the same, which reduces the complexity of clock synchronization between the BBUs and provides convenience.
  • the embodiments of the present invention also provide corresponding devices and systems.
  • a first aspect of the present invention provides a method for clock synchronization between baseband units BBU, including:
  • the wireless remote device determines that the clock source of one BBU is the primary clock source from the plurality of BBUs connected to the wireless remote device, the clock source of the other BBUs is the secondary clock source, and the other BBUs are the plurality of BBUs. a BBU other than the one BBU;
  • the wireless remote device acquires clock information of a primary clock source
  • the wireless remote device synchronizes clock information of each slave clock source according to clock information of the master clock source.
  • the clocks between the BBUs can be implemented without adding hardware, thereby reducing the complexity of clock synchronization between the BBUs and providing convenience.
  • the method further includes:
  • the wireless remote device acquires clock information of each of the slave clock sources
  • the wireless remote device synchronizes clock information of each slave clock source according to the clock information of the primary clock source, including:
  • the clock information is synchronized.
  • adjusting the slave clock source by the difference between the master and slave clock sources can improve the accuracy of clock synchronization.
  • the wireless remote device synchronizes clock information of each slave clock source according to the clock information of the primary clock source, including:
  • the wireless remote device sends the clock information of the primary clock source to the BBUs of the respective slave clock sources, and the clock information of the master clock source is used by the BBUs of the respective slave clock sources to adjust their clock information to Synchronized with the clock information of the primary clock source.
  • the wireless remote device acquires clock information of a primary clock source and clock information of the respective slave clock sources, and include:
  • the wireless remote device acquires a radio frame number and phase of a primary clock source, and a radio frame number and phase of each slave clock source;
  • the wireless remote device determines a difference between the clock information of the respective slave clock sources and the clock information of the master clock source, including:
  • the wireless remote device Determining, by the wireless remote device, a frame number difference and a phase difference between the respective slave clock sources and the master clock source, where the frame number difference is a wireless frame number and location of each of the slave clock sources Determining a difference between radio frame numbers of the primary clock source, the phase difference being a difference between a phase of each of the slave clock sources and a phase of the master clock source;
  • the third possible implementation manner of the first aspect can synchronize the radio frame number and the phase difference, thereby further improving the accuracy of the clock adjustment.
  • the wireless remote device acquires clock information of a primary clock source, including:
  • the wireless remote device acquires a radio frame number and a phase of a primary clock source
  • the wireless remote device sends the clock information of the primary clock source to the BBUs of the respective slave clock sources, and the clock information of the master clock source is used by the BBUs of the respective slave clock sources to adjust their clock information to Synchronizing with the clock information of the primary clock source, including:
  • a second aspect of the present invention provides a wireless remote device, including:
  • a determining unit configured to determine, from a plurality of BBUs connected to the wireless remote device, a clock source of a BBU as a primary clock source, a clock source of the other BBUs as a secondary clock source, and the other BBUs as the multiple BBUs a BBU other than the one BBU;
  • An acquiring unit configured to acquire clock information of the primary clock source determined by the determining unit
  • a synchronization unit configured to synchronize clock information of each slave clock source according to clock information of the master clock source acquired by the acquiring unit.
  • the clocks between the BBUs can be implemented without adding hardware, thereby reducing the complexity of clock synchronization between the BBUs and providing convenience.
  • the acquiring unit is further configured to acquire clock information of each of the slave clock sources;
  • the synchronization unit includes:
  • Determining a subunit configured to determine a difference between clock information of the respective slave clock sources acquired by the acquiring unit and clock information of the master clock source;
  • a sending subunit configured to send, to the BBUs of the respective slave clock sources, a corresponding difference value determined by the determining subunit, where the corresponding difference value is used by the BBU of each slave clock source to adjust its own clock information Synchronizing with the clock information of the primary clock source.
  • adjusting the slave clock source by the difference between the master and slave clock sources can improve the accuracy of the clock synchronization.
  • the synchronization unit is configured to send, by the wireless remote device, clock information of the primary clock source to a BBU of each slave clock source, where clock information of the master clock source is used by each of the slave clock sources
  • the BBU adjusts its own clock information to synchronize with the clock information of the primary clock source.
  • the acquiring unit is specifically configured to acquire a radio frame number and a phase of the primary clock source, and a radio frame number and a phase of each slave clock source;
  • the determining subunit is specifically configured to determine a frame number difference value and a phase difference value between the respective slave clock sources and the master clock source, where the frame number difference value is a radio frame of each of the slave clock sources Number and the main a difference between radio frame numbers of the clock source, the phase difference being a difference between a phase of the respective slave clock sources and a phase of the master clock source;
  • the sending subunit is specifically configured to send a corresponding frame number difference value and a corresponding phase difference value to the BBUs of the respective slave clock sources, where the corresponding frame number difference values are used for the BBUs of the respective slave clock sources. Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, and the corresponding phase difference value is used by the BBU of each slave clock source to adjust its own phase to the master clock source Phase synchronization.
  • the third possible implementation manner can synchronize the wireless frame number and the phase difference, thereby further improving the accuracy of the clock adjustment.
  • the acquiring unit is specifically configured to acquire a radio frame number and a phase of the primary clock source
  • the synchronization unit is configured to send a radio frame number and a phase of the primary clock source to a BBU of each slave clock source, where a radio frame number of the master clock source is used by a BBU of each slave clock source Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, the phase of the primary clock source being used by the BBU of each slave clock source to adjust its phase to the phase with the master clock source Synchronize.
  • a third aspect of the present invention provides a wireless remote device, including: an input/output device, a memory, and a processor.
  • the processor is configured to perform the following steps:
  • the clocks between the BBUs can be implemented without adding hardware, thereby reducing the complexity of clock synchronization between the BBUs and providing convenience.
  • the processor is further configured to acquire clock information of the respective slave clock sources, and determine a difference between clock information of the respective slave clock sources and clock information of the master clock source;
  • the input/output device is configured to send a corresponding difference to a BBU of each slave clock source, where The corresponding difference is used by the BBUs of the respective slave clock sources to adjust their own clock information to be synchronized with the clock information of the master clock source.
  • adjusting the slave clock source by the difference between the master and slave clock sources can improve the accuracy of clock synchronization.
  • the input/output device is configured to send clock information of the primary clock source to the BBUs of the respective slave clock sources, where clock information of the master clock source is used by the BBUs of the respective slave clock sources to set their own clock information. Adjusted to synchronize with the clock information of the primary clock source.
  • the processor is used to:
  • the frame number difference is a wireless frame number of each of the slave clock sources and a wireless of the master clock source a difference between the frame numbers, the phase difference being a difference between a phase of the respective slave clock sources and a phase of the master clock source;
  • the input/output device is configured to send a corresponding frame number difference value and a corresponding phase difference value to the BBUs of the respective slave clock sources, where the corresponding frame number difference values are used by the BBUs of the respective slave clock sources Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, the corresponding phase difference value is used by the BBU of each slave clock source to adjust its phase to the phase with the master clock source Synchronize.
  • the third possible implementation manner can synchronize the wireless frame number and the phase difference, thereby further improving the accuracy of the clock adjustment.
  • the processor is configured to obtain a radio frame number and a phase of a primary clock source
  • the input/output device is configured to send a radio frame number and a phase of the primary clock source to a BBU of each slave clock source, where a radio frame number of the master clock source is used by a BBU of each slave clock source Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, the phase of the primary clock source being used by the BBU of each slave clock source to adjust its phase to the phase with the master clock source Synchronize.
  • a fourth aspect of the present invention provides a system for clock synchronization between baseband units BBU, including a plurality of bases a unit BBU and a plurality of wireless remote units RRU, the plurality of RRUs including an RRU for clock synchronization, the plurality of BBUs being connected to the plurality of RRUs;
  • the RRU for clock synchronization is the wireless remote device described in any of the foregoing second aspect or the second aspect.
  • a fifth aspect of the present invention provides a system for clock synchronization between baseband units BBU, comprising a plurality of baseband units BBU, a plurality of wireless remote unit RRUs, and an RRU hub, wherein the plurality of RRUs pass through the RRU hub and the BBU connection;
  • the RRU hub is the wireless remote device of the second aspect of the present invention or any of the possible implementations of the second aspect.
  • the system for clock synchronization between the baseband units provided by the embodiments of the present invention can realize the same clock between the BBUs without adding hardware, thereby reducing the complexity of clock synchronization between the BBUs and providing convenience.
  • FIG. 1 is a schematic diagram of an embodiment of a system for clock synchronization between BBUs according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another embodiment of a system for clock synchronization between BBUs in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another embodiment of a system for clock synchronization between BBUs in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an embodiment of a method for clock synchronization between BBUs according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an embodiment of a wireless remote device according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another embodiment of a wireless remote device according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another embodiment of a wireless remote device in an embodiment of the present invention.
  • the embodiment of the invention provides a method for clock synchronization between baseband units, which can realize the same clock between BBUs without adding hardware, thereby reducing the complexity of clock synchronization between BBUs and providing convenience.
  • the embodiments of the present invention also provide corresponding devices and systems. Detailed below Description.
  • the wireless remote device in the embodiment of the present invention may be an RRU or a RRU hub (HUB), and the RRU or the RRU HUB may be connected to multiple BBUs, and of course, the two BBUs are connected.
  • the principle of clock synchronization is the same.
  • the systems of multiple BBUs may be the same or different.
  • UMTS Universal Mobile Telecommunications System
  • the system can also be used in the Long Term Evolution (LTE) system, and of course there are other systems.
  • FIG. 1 is a schematic diagram of an embodiment of a system for clock synchronization between baseband units BBU according to an embodiment of the present invention.
  • an embodiment of a system for clock synchronization between baseband units BBU includes: a first RRU, a second RRU, a third RRU, a first BBU, and a second BBU, and a first BBU and a
  • the two BBUs are respectively connected to the first RRU, the second RRU, and the third RRU, and may be connected through an optical fiber.
  • the three RRUs and two BBUs are taken as an example. In fact, more RRUs and BBUs may be included in the system.
  • the first BBU is a UMTS system
  • the second BBU is an LTE system.
  • the first RRU is used to synchronize clock information between the first BBU and the second BBU.
  • the first RRU may determine that the clock source of the first BBU is the primary clock source, and the clock source of the second BBU is the secondary clock source. If there are other BBUs in the embodiment of the present invention, the clock source of the other BBUs is also a slave clock source. The principle of clock synchronization is the same regardless of the number of slave clock sources. In the embodiment of the present invention, the second BBU is used.
  • the slave clock source is taken as an example. If there are multiple slave clock sources, you can refer to the slave clock source of the second BBU for understanding.
  • the first RRU acquires clock information of a primary clock source of the first BBU.
  • the first RRU synchronizes the slave clock source of the second BBU according to the clock information of the primary clock source of the first BBU Clock information.
  • the first RRU When acquiring the clock information of the primary clock source of the first BBU, the first RRU also acquires clock information of the secondary clock source of the second BBU.
  • the first RRU compares the clock information of the slave clock source of the second BBU with the clock information of the master clock source of the first BBU.
  • the first RRU determines the difference between the clock information of the slave clock source of the second BBU and the clock information of the master clock source of the first BBU by comparison.
  • the first RRU sends the difference to the second BBU, and the second BBU adjusts its own clock information to be synchronized with the clock information of the primary clock source according to the difference.
  • the specifics can be:
  • the first RRU acquires the radio frame number and phase of the primary clock source of the first BBU, and the radio frame number and phase of the secondary clock source of the second BBU.
  • the first RRU compares the radio frame number of the primary clock source of the first BBU with the radio frame number of the secondary clock source of the second BBU to obtain a frame number difference, and compares the phase of the primary clock source of the first BBU with the second
  • the phase of the BBU is compared from the phase of the clock source to obtain the phase difference.
  • the phase in the embodiment of the present invention refers to the phase of the clock signal.
  • the first RRU sends the frame number difference value and the phase difference value to the second BBU, and the second BBU adjusts its own wireless frame number according to the frame number difference value, and adjusts its own phase according to the phase difference value to implement a clock with the primary clock source. Synchronize.
  • Another option can be:
  • the first RRU sends clock information of the primary clock source of the first RRU to the second BBU, and the second BBU adjusts its own clock information to synchronize with the clock information of the primary clock source according to the clock information of the primary clock source.
  • the specifics can be:
  • the first RRU acquires the radio frame number and phase of the primary clock source of the first BBU.
  • the first RRU sends the radio frame number and phase of the primary clock source of the first BBU to the second BBU, and second The BBU adjusts its own radio frame number to be synchronized with the radio frame number of the main clock source according to the radio frame number of the primary clock source of the first BBU, and adjusts its phase to and according to the phase of the primary clock source of the first BBU.
  • the phase of the primary clock source is synchronized.
  • FIG. 2 is a schematic diagram of another embodiment of a system for clock synchronization between baseband units BBU according to an embodiment of the present invention.
  • an embodiment of a system for clock synchronization between baseband units BBU includes: a first RRU, a second RRU, a third RRU, an RRU hub, a first BBU, and a second BBU, first The BBU and the second BBU are respectively connected to the RRU hub, and the first RRU, the second RRU, and the third RRU are respectively connected to the RRU hub, and may be connected through an optical fiber.
  • first RRU, the second RRU, and the third RRU are respectively connected to the RRU hub, and may be connected through an optical fiber.
  • only the three RRUs and two BBUs are taken as an example. In fact, more RRUs and BBUs may be included in the system.
  • the first BBU is a UMTS system
  • the second BBU is an LTE system.
  • the RRU hub synchronizes clock information between the first BBU and the second BBU.
  • the RRU hub can determine that the clock source of the first BBU is the primary clock source, and the clock source of the second BBU is the secondary clock source. If there are other BBUs in the embodiment of the present invention, the clock source of the other BBUs is also a slave clock source. The principle of clock synchronization is the same regardless of the number of slave clock sources. In the embodiment of the present invention, the second BBU is used. The slave clock source is taken as an example. If there are multiple slave clock sources, you can refer to the slave clock source of the second BBU for understanding.
  • the RRU hub acquires clock information of the primary clock source of the first BBU.
  • the RRU hub synchronizes clock information of the slave clock source of the second BBU according to clock information of the primary clock source of the first BBU.
  • the RRU hub acquires the clock information of the primary clock source of the first BBU, it also acquires the clock information of the secondary clock source of the second BBU.
  • the RRU hub compares the clock information of the slave clock source of the second BBU with the clock information of the master clock source of the first BBU.
  • the RRU hub determines the clock information of the slave clock source of the second BBU by comparison with the first BBU The difference between the clock information of the primary clock source.
  • the RRU hub sends the difference to the second BBU, and the second BBU adjusts its own clock information to be synchronized with the clock information of the primary clock source according to the difference.
  • the specifics can be:
  • the RRU hub acquires the radio frame number and phase of the primary clock source of the first BBU, and the radio frame number and phase of the secondary clock source of the second BBU.
  • the RRU hub compares the radio frame number of the primary clock source of the first BBU with the radio frame number of the secondary clock source of the second BBU to obtain a frame number difference, and compares the phase of the primary clock source of the first BBU with the second BBU.
  • the phase is compared from the phase of the clock source to obtain the phase difference.
  • the phase in the embodiment of the present invention refers to the phase of the clock signal.
  • the RRU hub sends the frame number difference value and the phase difference value to the second BBU, and the second BBU adjusts its own radio frame number according to the frame number difference value, adjusts its own phase according to the phase difference value, and implements clock synchronization with the main clock source. .
  • Another option can be:
  • the RRU hub sends clock information of the primary clock source of the RRU hub to the second BBU, and the second BBU adjusts its own clock information to synchronize with the clock information of the primary clock source according to the clock information of the primary clock source.
  • the specifics can be:
  • the RRU hub acquires the radio frame number and phase of the primary clock source of the first BBU.
  • the RRU hub sends the radio frame number and phase of the primary clock source of the first BBU to the second BBU, and the second BBU adjusts its own radio frame number to the primary clock source according to the radio frame number of the primary clock source of the first BBU.
  • the wireless frame number synchronization adjusts the phase of itself to the phase of the primary clock source according to the phase of the primary clock source of the first BBU.
  • FIG. 3 is a schematic diagram of another embodiment of a system for clock synchronization between baseband units BBU according to an embodiment of the present invention.
  • the master clock BBU refers to the BBU that provides the primary clock source
  • the slave clock BBU refers to the BBU that provides the slave clock source.
  • the RRU or RRU hub includes two CPRI modules and a phase discrimination module.
  • the two CPRI modules are used to communicate with the master clock BBU and the slave clock BBU, and the phase detector module is used to compare the phase of the information of the master and slave clocks.
  • the RRU or the RRU hub communicates with the master clock BBU and the slave clock BBU through the two CPRI modules to obtain the clock information of the master clock BBU and obtain the clock information of the slave clock BBU.
  • the RRU or RRU hub sends the clock information of the master clock BBU and the clock information of the slave clock BBU to the phase-detection module, and the phase-detection module compares the clock information of the master clock BBU with the clock information of the slave clock BBU, and uses the master clock source as the master clock source.
  • the standard clock calculates the phase difference of 10ms from the clock source and 10ms from the main clock source.
  • the RRU or RRU hub transmits the 10 ms phase difference between the master clock BBU and each slave clock BBU and the radio frame number of the master clock BBU to the slave clock BBU through the CPRI module.
  • the 10ms phase difference obtained by the backhaul of the clock BBU and the radio frame number of the main clock BBU are adjusted to the 10ms phase and the radio frame number of the master clock BBU to achieve synchronization with the radio frame number and the 10ms phase of the main clock BBU.
  • an embodiment of a method for clock synchronization between baseband units BBU includes:
  • the wireless remote device determines that a clock source of one BBU is a primary clock source, and a clock source of the other BBUs is a slave clock source, and the other BBUs are the plurality of BBUs.
  • the wireless remote device acquires clock information of a primary clock source.
  • the wireless remote device synchronizes clock information of each slave clock source according to clock information of the primary clock source.
  • the clock between the BBUs can be implemented by adding hardware.
  • the embodiment of the present invention provides a method for clock synchronization between baseband units, which can be increased.
  • the clocks between the BBUs are the same, which reduces the complexity of clock synchronization between the BBUs and provides convenience.
  • the wireless remote device acquires a master clock.
  • the method may further include:
  • the wireless remote device acquires clock information of each of the slave clock sources
  • the wireless remote device synchronizes clock information of each slave clock source according to the clock information of the primary clock source, including:
  • the clock information is synchronized.
  • the wireless remote device is configured according to the foregoing embodiment of FIG.
  • the clock information of the primary clock source synchronizes the clock information of each slave clock source, which may include:
  • the wireless remote device sends the clock information of the primary clock source to the BBUs of the respective slave clock sources, and the clock information of the master clock source is used by the BBUs of the respective slave clock sources to adjust their clock information to Synchronized with the clock information of the primary clock source.
  • a third optional implementation of the method for clock synchronization between the baseband units BBU provided by the embodiment of the present invention is provided on the basis of the first optional embodiment of the method for clock synchronization between the baseband units BBU.
  • the wireless remote device acquiring the clock information of the primary clock source and the clock information of the respective slave clock sources may include:
  • the wireless remote device acquires a radio frame number and phase of a primary clock source, and a radio frame number and phase of each slave clock source;
  • the determining, by the wireless remote device, the difference between the clock information of the respective slave clock sources and the clock information of the master clock source may include:
  • the wireless remote device Determining, by the wireless remote device, a frame number difference and a phase difference between the respective slave clock sources and the master clock source, where the frame number difference is a wireless frame number and location of each of the slave clock sources Determining a difference between radio frame numbers of the primary clock source, the phase difference being a difference between a phase of each of the slave clock sources and a phase of the master clock source;
  • the clock information of the source is synchronized, which can include:
  • the fourth optional implementation of the method for clock synchronization between the baseband units BBU provided by the embodiment of the present invention is based on the second optional embodiment of the method for clock synchronization between the baseband units BBU.
  • the wireless remote device acquires clock information of the primary clock source, and may include:
  • the wireless remote device acquires a radio frame number and a phase of a primary clock source
  • the wireless remote device sends the clock information of the primary clock source to the BBUs of the respective slave clock sources, and the clock information of the master clock source is used by the BBUs of the respective slave clock sources to adjust their clock information to Synchronizing with the clock information of the primary clock source may include:
  • an embodiment of a wireless remote device includes:
  • a determining unit 201 configured to determine, from a plurality of BBUs connected to the wireless remote device, a clock source of one BBU as a primary clock source, a clock source of other BBUs as a secondary clock source, and the other BBUs as the multiple a BBU other than the one BBU in the BBU;
  • the obtaining unit 202 is configured to acquire clock information of the primary clock source determined by the determining unit 201;
  • the synchronization unit 203 is configured to synchronize clock information of each slave clock source according to clock information of the master clock source acquired by the acquiring unit 202.
  • the determining unit 201 determines that the clock source of one BBU is the main clock source from the plurality of BBUs connected to the wireless remote device, the clock source of the other BBUs is the slave clock source, and the other BBUs are a BBU other than the one BBU in the plurality of BBUs; the obtaining unit 202 acquires clock information of the primary clock source determined by the determining unit 201; and the synchronization unit 203 is configured according to the acquiring unit The clock information of the primary clock source acquired by 202 synchronizes clock information of each slave clock source.
  • the clock between the BBUs can be implemented by means of adding hardware.
  • the embodiment of the present invention provides a wireless remote device, which can be added without adding hardware.
  • the clocks between the BBUs are the same, which reduces the complexity of clock synchronization between the BBUs and provides convenience.
  • the obtaining unit 202 is further configured to acquire clock information of each of the slave clock sources;
  • the synchronization unit 203 includes:
  • a determining subunit 2031 configured to determine a difference between clock information of the respective slave clock sources acquired by the acquiring unit 202 and clock information of the master clock source;
  • the sending subunit 2032 is configured to send, to the BBUs of the respective slave clock sources, corresponding difference values determined by the determining subunit 2031, where the corresponding difference value is used by the BBUs of the respective slave clock sources to set their own clocks.
  • the information is adjusted to be synchronized with the clock information of the primary clock source.
  • the synchronization unit 203 is specifically configured to send, by the wireless remote device, clock information of the primary clock source to the BBUs of the respective slave clock sources, where clock information of the primary clock source is used for each of the slave clock sources
  • the BBU adjusts its own clock information to synchronize with the clock information of the primary clock source.
  • the acquiring unit 202 is specifically configured to acquire a radio frame number and a phase of the primary clock source, and a radio frame number and a phase of each slave clock source;
  • the determining subunit 2031 is specifically configured to determine a frame number difference value and a phase difference value between the respective slave clock sources and the master clock source, where the frame number difference value is wireless of each of the slave clock sources a difference between a frame number and a radio frame number of the primary clock source, the phase difference being a difference between a phase of each of the slave clock sources and a phase of the master clock source;
  • the sending sub-unit 2032 is configured to send a corresponding frame number difference value and a corresponding phase difference value to the BBUs of the respective slave clock sources, where the corresponding frame number difference values are used by the respective slave clock sources.
  • BBU Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, and the corresponding phase difference value is used by the BBU of each slave clock source to adjust its own phase to the master clock source Phase synchronization.
  • the acquiring unit 202 is specifically configured to acquire a radio frame number and a phase of the primary clock source.
  • the synchronization unit 203 is configured to send, to the BBUs of the respective slave clock sources, a radio frame number and a phase of the primary clock source, where a radio frame number of the primary clock source is used for a BBU of each slave clock source. Adjusting its own radio frame number to be synchronized with the radio frame number of the primary clock source, the phase of the primary clock source being used by the BBU of each slave clock source to adjust its own phase to the master clock source Phase synchronization.
  • the wireless remote device provided by the embodiment of the present invention can be understood by referring to the related description in the parts of FIG. 1 to FIG. 4, and no further description is made herein.
  • FIG. 7 is a schematic structural diagram of a wireless remote device 30 according to an embodiment of the present invention.
  • the wireless remote device 30 includes a processor 310, a memory 350, and an input/output I/O device 330.
  • the memory 350 can include read only memory and random access memory, and provides operational instructions and data to the processor 310.
  • a portion of memory 350 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the memory 350 stores elements, executable modules or data structures, or a subset thereof, or their extended set:
  • the operation instruction can be stored in the operating system
  • the wireless remote device provided by the embodiment of the present invention can realize the same clock between the BBUs without adding hardware, thereby reducing the complexity of clock synchronization between the BBUs and providing convenience.
  • the processor 310 controls the operation of the wireless remote device 30, which may also be referred to as a CPU (Central Processing Unit).
  • Memory 350 can include read only memory and random access memory and provides instructions and data to processor 310. A portion of memory 350 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the various components of the wireless remote device 30 are coupled together by a bus system 320.
  • the bus system 320 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 320 in the figure.
  • Processor 310 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 310 or an instruction in a form of software.
  • the processor 310 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 350, and the processor 310 reads the information in the memory 350 and performs the steps of the above method in combination with its hardware.
  • the processor 310 is further configured to acquire clock information of each of the slave clock sources;
  • the I/O device 330 is configured to send a corresponding difference value to the BBUs of the respective slave clock sources, where the corresponding difference value is used by the BBUs of the respective slave clock sources to adjust their own clock information to the master clock.
  • the clock information of the source is synchronized.
  • the I/O device 330 is configured to send clock information of the primary clock source to the BBUs of the respective slave clock sources, where the clock information of the master clock source is used by the BBUs of the respective slave clock sources to be themselves The clock information is adjusted to be synchronized with the clock information of the primary clock source.
  • the processor 310 is further configured to: obtain a radio frame number and a phase of the primary clock source, and a radio frame number and a phase of each slave clock source;
  • the frame number difference is a wireless frame number of each of the slave clock sources and a wireless of the master clock source a difference between the frame numbers, the phase difference being a difference between a phase of the respective slave clock sources and a phase of the master clock source;
  • the I/O device 330 is configured to send a corresponding frame number difference value and a corresponding phase difference value to the BBUs of the respective slave clock sources, where the corresponding frame number difference values are used by the BBUs of the respective slave clock sources to be themselves
  • the radio frame number is adjusted to be synchronized with the radio frame number of the primary clock source
  • the corresponding phase difference value is used by the BBU of each slave clock source to adjust its own phase to be synchronized with the phase of the master clock source.
  • the above wireless remote device 30 can be understood by referring to the description in the parts of FIG. 1 to FIG. 6 , and no further description is made herein.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, disk or CD.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

本发明公开了一种基带单元之间时钟同步的方法，包括：无线远端装置从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；所述无线远端装置获取主时钟源的时钟信息；所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。本发明实施例提供的基带单元之间时钟同步的方法，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。

Description

一种基带单元之间时钟同步的方法、装置及*** 技术领域
本发明涉及通信技术领域，具体涉及一种基带单元BBU之间时钟同步的方法、装置及***。
背景技术
基带单元(Base Band Unit，BBU)和无线远端单元(Radio Remote Unit，RRU)是基站的基本组成部分，BBU通常放置在机房，RRU可安装至楼层，BBU与RRU之间采用连接，RRU再通过同轴电缆及功分器或耦合器连接至天线。
随着无线通信产业的发展，越来越多的场景下会出现多制式通信共存。那么就要求不同制式的BBU输出的无线帧号与10ms相位是完全同步的，也就是要保证时钟同步，来保证数据处理的正确性。无线帧号是指通用公共无线接口(Common Public Radio Interface，CPRI)接口上的无线帧帧号，每隔10ms加1。10ms是无线帧的帧长，10ms相位是指BBU与RRU间传输的无线帧的相位关系。
时钟同步又称时刻同步，是指绝对时钟的同步，要求信号的起始时刻与世界统一时钟(Coordinated Universal Time，UTC)时钟保持一致。本文中的时钟同步，是指BBU之间的无线帧号同步与10ms相位对齐。
因为位于不同站点的BBU之间的距离可能很远，所以无线帧号和相位很难同步，现有技术中有通过在每个BBU上增加互联单板，互联单板间通过光纤连接的方式来实现各BBU之间的时钟同步，但是这样需要增加硬件，导致时钟同步的复杂度高。
发明内容
为解决现有技术中要实现BBU之间的时钟不同只能靠增加硬件的方式来实现，复杂度高的问题，本发明实施例提供一种基带单元之间时钟同步的方法，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。本发明实施例还提供了相应的装置及***。
本发明第一方面提供一种基带单元BBU之间时钟同步的方法，包括：
无线远端装置从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
所述无线远端装置获取主时钟源的时钟信息；
所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
第一方面可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
结合第一方面，在第一种可能的实现方式中，所述无线远端装置获取主时钟源的时钟信息时，所述方法还包括：
所述无线远端装置获取所述各个从时钟源的时钟信息；
所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，包括：
所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
第一方面第一种可能的实现方式，通过主从时钟源的差值来调整从时钟源可以提高时钟同步的准确性。
结合第一方面，在第二种可能的实现方式中，所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，包括：
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
结合第一方面第一种可能的实现方式，在第三种可能的实现方式中，所述无线远端装置获取主时钟源的时钟信息和所述各个从时钟源的时钟信息，包 括：
所述无线远端装置获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值，包括：
所述无线远端装置确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步，包括：
所述无线远端装置向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
第一方面第三种可能的实现方式，可以同步无线帧号和相位差，进一步提高了时钟调整的准确性。
结合第一方面第二种可能的实现方式，在第四种可能的实现方式中，所述无线远端装置获取主时钟源的时钟信息，包括：
所述无线远端装置获取主时钟源的无线帧号和相位；
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步，包括：
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
本发明第二方面提供一种无线远端装置，包括：
确定单元，用于从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
获取单元，用于获取所述确定单元确定的所述主时钟源的时钟信息；
同步单元，用于根据所述获取单元获取的所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
第二方面可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
结合第二方面，在第一种可能的实现方式中，
所述获取单元，还用于获取所述各个从时钟源的时钟信息；
所述同步单元包括：
确定子单元，用于确定所述获取单元获取的所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
发送子单元，用于向所述各个从时钟源的BBU发送所述确定子单元确定的对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
第二方面第一种可能的实现方式，通过主从时钟源的差值来调整从时钟源可以提高时钟同步的准确性。
结合第二方面，在第二种可能的实现方式中，
所述同步单元，具体用于所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
结合第二方面第一种可能的实现方式，在第三种可能的实现方式中，
所述获取单元，具体用于获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
所述确定子单元，具体用于确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主 时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
所述发送子单元，具体用于向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
第二方面第三种可能的实现方式，可以同步无线帧号和相位差，进一步提高了时钟调整的准确性。
结合第二方面第二种可能的实现方式，在第四种可能的实现方式中，
所述获取单元，具体用于获取主时钟源的无线帧号和相位；
所述同步单元，具体用于向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
本发明第三方面提供一种无线远端装置，包括：输入/输出设备、内存和处理器，
所述处理器用于执行如下步骤：
从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
获取主时钟源的时钟信息；
根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
第三方面可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
结合第三方面，在第一种可能的实现方式中，
所述处理器还用于获取所述各个从时钟源的时钟信息，确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
所述输入/输出设备用于向所述各个从时钟源的BBU发送对应的差值，所 述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
第三方面第一种可能的实现方式，通过主从时钟源的差值来调整从时钟源可以提高时钟同步的准确性。
结合第三方面，在第二种可能的实现方式中，
所述输入/输出设备用于向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
结合第三方面第一种可能的实现方式，在第三种可能的实现方式中，
所述处理器用于：
获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
所述输入/输出设备用于向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
第三方面第三种可能的实现方式，可以同步无线帧号和相位差，进一步提高了时钟调整的准确性。
结合第三方面第二种可能的实现方式，在第四种可能的实现方式中，
所述处理器用于获取主时钟源的无线帧号和相位；
所述输入/输出设备用于向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
本发明第四方面提供一种基带单元BBU之间时钟同步的***，包括多个基 带单元BBU和多个无线远端单元RRU，所述多个RRU中包括一个用于时钟同步的RRU，所述多个BBU与所述多个RRU连接；
所述用于时钟同步的RRU为上述第二方面或第二方面任一可能的实现方式所述的无线远端装置。
本发明第五方面提供一种基带单元BBU之间时钟同步的***，包括多个基带单元BBU、多个无线远端单元RRU和RRU集线器，所述多个RRU通过所述RRU集线器与所述BBU连接；
所述RRU集线器上述权利要求第二方面或第二方面任一可能的实现方式所述的无线远端装置。
本发明实施例提供的基带单元之间时钟同步的***，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本发明实施例中BBU之间时钟同步的***的一实施例示意图；
图2是本发明实施例中BBU之间时钟同步的***的另一实施例示意图；
图3是本发明实施例中BBU之间时钟同步的***的另一实施例示意图；
图4是本发明实施例中BBU之间时钟同步的方法的一实施例示意图；
图5是本发明实施例中无线远端装置的一实施例示意图；
图6是本发明实施例中无线远端装置的另一实施例示意图；
图7是本发明实施例中无线远端装置的另一实施例示意图。
具体实施方式
本发明实施例提供一种基带单元之间时钟同步的方法，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。本发明实施例还提供了相应的装置及***。以下分别进行详细 说明。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明实施例中的无线远端装置可以是RRU或者RRU集线器(HUB)，RRU或者RRU HUB可以连接多个BBU，当然也包括连接两个BBU，无论是连接几个BBU，本发明实施例中时钟同步的原理是相同的。
在基站中可以有多个BBU和多个RRU，多个BBU的制式可以相同，也可以不同，目前多不同制式共存的场景很多，例如可以有用于通用移动通信***(Universal Mobile Telecommunications System，UMTS)制式的，还可以有用于长期演进(Long Term Evolution，LTE)制式的，当然还可以有其它制式的。
图1为本发明实施例中基带单元BBU之间时钟同步的***的一实施例示意图。
参阅图1，本发明实施例提供的基带单元BBU之间时钟同步的***的一实施例包括：第一RRU、第二RRU、第三RRU、第一BBU和第二BBU，第一BBU和第二BBU都分别与第一RRU、第二RRU和第三RRU通信连接，可以是通过光纤连接。当前，本发明实施例中只是以这三个RRU和两个BBU为例进行说明，实际上，该***中可以包括更多的RRU和BBU。
第一BBU为UMTS制式，第二BBU为LTE制式，第一RRU用于同步第一BBU和第二BBU之间的时钟信息。
第一RRU可以确定第一BBU的时钟源为主时钟源，则第二BBU的时钟源为从时钟源。如果本发明实施例中还有其它的BBU，则其它BBU的时钟源也为从时钟源，无论有几个从时钟源，时钟同步的原理都是相同的，本发明实施例中以第二BBU的从时钟源为例进行说明，若有多个从时钟源，都可以参阅第二BBU的从时钟源进行理解。
第一RRU获取第一BBU的主时钟源的时钟信息。
第一RRU根据第一BBU的主时钟源的时钟信息同步第二BBU的从时钟源 的时钟信息。
本发明实施例中时钟同步的过程可以有如下方案：
一种方案可以是：
第一RRU获取第一BBU的主时钟源的时钟信息时，还获取第二BBU的从时钟源的时钟信息。
第一RRU将第二BBU的从时钟源的时钟信息与第一BBU的主时钟源的时钟信息进行比较。
第一RRU通过比较确定第二BBU的从时钟源的时钟信息与第一BBU的主时钟源的时钟信息的差值。
第一RRU向第二BBU发送所述差值，第二BBU根据该差值将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
在这种方案中，具体可以是：
第一RRU获取第一BBU的主时钟源的无线帧号和相位，以及第二BBU的从时钟源的无线帧号和相位。
第一RRU将第一BBU的主时钟源的无线帧号与第二BBU的从时钟源的无线帧号进行比对，得到帧号差值，将第一BBU的主时钟源的相位与第二BBU的从时钟源的相位进行比较，得到相位差值。本发明实施例中的相位是指时钟信号的相位。
第一RRU向第二BBU发送该帧号差值和相位差值，第二BBU根据该帧号差值调整自身的无线帧号，根据相位差值调整自身的相位，实现与主时钟源的时钟同步。
另一种方案可以是：
第一RRU向第二BBU发送第一RRU的主时钟源的时钟信息，第二BBU根据该主时钟源的时钟信息将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
在这种方案中，具体可以是：
第一RRU获取第一BBU的主时钟源的无线帧号和相位。
第一RRU向第二BBU发送第一BBU的主时钟源的无线帧号和相位，第二 BBU根据第一BBU的主时钟源的无线帧号将自身的无线帧号调整到与所述主时钟源的无线帧号同步，根据第一BBU的主时钟源的相位将自身的相位调整到与所述主时钟源的相位同步。
图2为本发明实施例中基带单元BBU之间时钟同步的***的另一实施例示意图。
参阅图2，本发明实施例提供的基带单元BBU之间时钟同步的***的一实施例包括：第一RRU、第二RRU、第三RRU、RRU集线器、第一BBU和第二BBU，第一BBU和第二BBU都分别与RRU集线器连接，第一RRU、第二RRU和第三RRU都分别与RRU集线器连接，可以是通过光纤连接。当前，本发明实施例中只是以这三个RRU和两个BBU为例进行说明，实际上，该***中可以包括更多的RRU和BBU。
第一BBU为UMTS制式，第二BBU为LTE制式，RRU集线器同步第一BBU和第二BBU之间的时钟信息。
RRU集线器可以确定第一BBU的时钟源为主时钟源，则第二BBU的时钟源为从时钟源。如果本发明实施例中还有其它的BBU，则其它BBU的时钟源也为从时钟源，无论有几个从时钟源，时钟同步的原理都是相同的，本发明实施例中以第二BBU的从时钟源为例进行说明，若有多个从时钟源，都可以参阅第二BBU的从时钟源进行理解。
RRU集线器获取第一BBU的主时钟源的时钟信息。
RRU集线器根据第一BBU的主时钟源的时钟信息同步第二BBU的从时钟源的时钟信息。
本发明实施例中时钟同步的过程可以有如下方案：
一种方案可以是：
RRU集线器获取第一BBU的主时钟源的时钟信息时，还获取第二BBU的从时钟源的时钟信息。
RRU集线器将第二BBU的从时钟源的时钟信息与第一BBU的主时钟源的时钟信息进行比较。
RRU集线器通过比较确定第二BBU的从时钟源的时钟信息与第一BBU的 主时钟源的时钟信息的差值。
RRU集线器向第二BBU发送所述差值，第二BBU根据该差值将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
在这种方案中，具体可以是：
RRU集线器获取第一BBU的主时钟源的无线帧号和相位，以及第二BBU的从时钟源的无线帧号和相位。
RRU集线器将第一BBU的主时钟源的无线帧号与第二BBU的从时钟源的无线帧号进行比对，得到帧号差值，将第一BBU的主时钟源的相位与第二BBU的从时钟源的相位进行比较，得到相位差值。本发明实施例中的相位是指时钟信号的相位。
RRU集线器向第二BBU发送该帧号差值和相位差值，第二BBU根据该帧号差值调整自身的无线帧号，根据相位差值调整自身的相位，实现与主时钟源的时钟同步。
另一种方案可以是：
RRU集线器向第二BBU发送RRU集线器的主时钟源的时钟信息，第二BBU根据该主时钟源的时钟信息将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
在这种方案中，具体可以是：
RRU集线器获取第一BBU的主时钟源的无线帧号和相位。
RRU集线器向第二BBU发送第一BBU的主时钟源的无线帧号和相位，第二BBU根据第一BBU的主时钟源的无线帧号将自身的无线帧号调整到与所述主时钟源的无线帧号同步，根据第一BBU的主时钟源的相位将自身的相位调整到与所述主时钟源的相位同步。
图3为本发明实施例中基带单元BBU之间时钟同步的***的另一实施例示意图。
参阅图3，包括主时钟BBU、从时钟BBU和用于时钟同步的RRU或者RRU集线器，主时钟BBU是指提供主时钟源的BBU，从时钟BBU是指提供从时钟源的BBU。
RRU或者RRU集线器包括两个CPRI模块和鉴相模块，两个CPRI模块用于与主时钟BBU和从时钟BBU通信，鉴相模块用于比较主从时钟的信息的相位。
RRU或者RRU集线器通过两个CPRI模块分别与主时钟BBU和从时钟BBU通信，获取主时钟BBU的时钟信息，获从时钟BBU的时钟信息。
RRU或者RRU集线器将主时钟BBU的时钟信息和从时钟BBU的时钟信息分别送到鉴相模块，鉴相模块将主时钟BBU的时钟信息和从时钟BBU的时钟信息进行比较，以主时钟源作为标准时钟，分别计算从时钟源的10ms相位与主时钟源的10ms相位差。
RRU或RRU集线器将主时钟BBU与各个从时钟BBU的10ms相位差及主时钟BBU的无线帧号，通过CPRI模块回传给从时钟BBU。
从时钟BBU通过回传得到的10ms相位差及主时钟BBU的无线帧号对本身的10ms相位及无线帧号进行调整，达到与主时钟BBU的无线帧号及10ms相位的同步。
参阅图4，本发明实施例提供的基带单元BBU之间时钟同步的方法的一实施例包括：
101、无线远端装置从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU。
102、所述无线远端装置获取主时钟源的时钟信息。
103、所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
与现有技术中要实现BBU之间的时钟不同只能靠增加硬件的方式来实现，复杂度高的相比，本发明实施例提供一种基带单元之间时钟同步的方法，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
可选地，在上述图4对应的实施例的基础上，本发明实施例提供的基带单元BBU之间时钟同步的方法的第一个可选实施例中，所述无线远端装置获取主时钟源的时钟信息时，所述方法还可以包括：
所述无线远端装置获取所述各个从时钟源的时钟信息；
所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，包括：
所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，在上述图4对应的实施例的基础上，本发明实施例提供的基带单元BBU之间时钟同步的方法的第二个可选实施例中，所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，可以包括：
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，在上述基带单元BBU之间时钟同步的方法对应的第一个可选实施例的基础上，本发明实施例提供的基带单元BBU之间时钟同步的方法的第三个可选实施例中，所述无线远端装置获取主时钟源的时钟信息和所述各个从时钟源的时钟信息，可以包括：
所述无线远端装置获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值，可以包括：
所述无线远端装置确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟 源的时钟信息同步，可以包括：
所述无线远端装置向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
可选地，在上述基带单元BBU之间时钟同步的方法对应的第二个可选实施例的基础上，本发明实施例提供的基带单元BBU之间时钟同步的方法的第四个可选实施例中，所述无线远端装置获取主时钟源的时钟信息，可以包括：
所述无线远端装置获取主时钟源的无线帧号和相位；
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步，可以包括：
所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
参阅图5，本发明实施例提供的无线远端装置的一实施例包括：
确定单元201，用于从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
获取单元202，用于获取所述确定单元201确定的所述主时钟源的时钟信息；
同步单元203，用于根据所述获取单元202获取的所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
本发明实施例中，确定单元201从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；获取单元202获取所述确定单元201确定的所述主时钟源的时钟信息；同步单元203根据所述获取单元 202获取的所述主时钟源的时钟信息同步各个从时钟源的时钟信息。与现有技术中要实现BBU之间的时钟不同只能靠增加硬件的方式来实现，复杂度高的相比，本发明实施例提供无线远端装置，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
可选地，在上述图5对应的实施例的基础上，参阅图6，本发明实施例提供的无线远端装置的第一个可选实施例中，
所述获取单元202，还用于获取所述各个从时钟源的时钟信息；
所述同步单元203包括：
确定子单元2031，用于确定所述获取单元202获取的所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
发送子单元2032，用于向所述各个从时钟源的BBU发送所述确定子单元2031确定的对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，在上述图5对应的实施例的基础上，本发明实施例提供的无线远端装置的第二个可选实施例中，
所述同步单元203，具体用于所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，在上述图6对应的实施例的基础上，本发明实施例提供的无线远端装置的第三个可选实施例中，
所述获取单元202，具体用于获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
所述确定子单元2031，具体用于确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
所述发送子单元2032，具体用于向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU 将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
可选地，在上述图5对应的第二个可选实施例的基础上，本发明实施例提供的无线远端装置的第四个可选实施例中，
所述获取单元202，具体用于获取主时钟源的无线帧号和相位；
所述同步单元203，具体用于向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
本发明实施例提供的无线远端装置可以参阅图1至图4部分的相关描述进行理解，本处不做过多赘述。
图7是本发明实施例提供的无线远端装置30的结构示意图。所述无线远端装置30包括处理器310、存储器350和输入/输出I/O设备330，存储器350可以包括只读存储器和随机存取存储器，并向处理器310提供操作指令和数据。存储器350的一部分还可以包括非易失性随机存取存储器(NVRAM)。
在一些实施方式中，存储器350存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集:
在本发明实施例中，通过调用存储器350存储的操作指令(该操作指令可存储在操作***中)，
从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
获取主时钟源的时钟信息；
根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
本发明实施例提供的无线远端装置，可以在不增加硬件的前提下，就实现BBU之间的时钟同，从而降低了BBU之间时钟同步的复杂度，提供了便利性。
处理器310控制无线远端装置30的操作，处理器310还可以称为CPU(Central Processing Unit，中央处理单元)。存储器350可以包括只读存储器和随机存取存储器，并向处理器310提供指令和数据。存储器350的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中无线远端装置30的各个组件通过总线***320耦合在一起，其中总线***320除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线***320。
上述本发明实施例揭示的方法可以应用于处理器310中，或者由处理器310实现。处理器310可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器310中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器310可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器350，处理器310读取存储器350中的信息，结合其硬件完成上述方法的步骤。
可选地，处理器310还用于获取所述各个从时钟源的时钟信息；
确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
I/O设备330用于向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，I/O设备330用于向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
可选地，处理器310还用于：获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
I/O设备330用于向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
以上的无线远端装置30可以参阅图1至图6部分的描述进行理解，本处不做过多赘述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
以上对本发明实施例所提供的基带单元之间时钟同步的方法、装置以及***进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (13)

  1. 一种基带单元BBU之间时钟同步的方法，其特征在于，包括：
    无线远端装置从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
    所述无线远端装置获取主时钟源的时钟信息；
    所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
  2. 根据权利要求1所述的方法，其特征在于，所述无线远端装置获取主时钟源的时钟信息时，所述方法还包括：
    所述无线远端装置获取所述各个从时钟源的时钟信息；
    所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，包括：
    所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
    所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
  3. 根据权利要求1所述的方法，其特征在于，所述无线远端装置根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息，包括：
    所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
  4. 根据权利要求2所述的方法，其特征在于，所述无线远端装置获取主时钟源的时钟信息和所述各个从时钟源的时钟信息，包括：
    所述无线远端装置获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
    所述无线远端装置确定所述各个从时钟源的时钟信息与所述主时钟源的 时钟信息的差值，包括：
    所述无线远端装置确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
    所述无线远端装置向所述各个从时钟源的BBU发送对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步，包括：
    所述无线远端装置向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
  5. 根据权利要求3所述的方法，其特征在于，所述无线远端装置获取主时钟源的时钟信息，包括：
    所述无线远端装置获取主时钟源的无线帧号和相位；
    所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步，包括：
    所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
  6. 一种无线远端装置，其特征在于，包括：
    确定单元，用于从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
    获取单元，用于获取所述确定单元确定的所述主时钟源的时钟信息；
    同步单元，用于根据所述获取单元获取的所述主时钟源的时钟信息同步各 个从时钟源的时钟信息。
  7. 根据权利要求6所述的无线远端装置，其特征在于，
    所述获取单元，还用于获取所述各个从时钟源的时钟信息；
    所述同步单元包括：
    确定子单元，用于确定所述获取单元获取的所述各个从时钟源的时钟信息与所述主时钟源的时钟信息的差值；
    发送子单元，用于向所述各个从时钟源的BBU发送所述确定子单元确定的对应的差值，所述对应的差值用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
  8. 根据权利要求6所述的无线远端装置，其特征在于，
    所述同步单元，具体用于所述无线远端装置向所述各个从时钟源的BBU发送所述主时钟源的时钟信息，所述主时钟源的时钟信息用于所述各个从时钟源的BBU将自身的时钟信息调整到与所述主时钟源的时钟信息同步。
  9. 根据权利要求7所述的无线远端装置，其特征在于，
    所述获取单元，具体用于获取主时钟源的无线帧号和相位，以及各个从时钟源的无线帧号和相位；
    所述确定子单元，具体用于确定所述各个从时钟源与所述主时钟源之间的帧号差值和相位差值，所述帧号差值为所述各个从时钟源的无线帧号与所述主时钟源的无线帧号之间的差值，所述相位差值为所述各个从时钟源的相位与所述主时钟源的相位之间的差值；
    所述发送子单元，具体用于向所述各个从时钟源的BBU发送对应的帧号差值和对应的相位差值，所述对应的帧号差值用于所述各个从时钟源的BBU将自身的无线帧号调整到与所述主时钟源的无线帧号同步，所述对应的相位差值用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
  10. 根据权利要求8所述的无线远端装置，其特征在于，
    所述获取单元，具体用于获取主时钟源的无线帧号和相位；
    所述同步单元，具体用于向所述各个从时钟源的BBU发送所述主时钟源的无线帧号和相位，所述主时钟源的无线帧号用于所述各个从时钟源的BBU将自 身的无线帧号调整到与所述主时钟源的无线帧号同步，所述主时钟源的相位用于所述各个从时钟源的BBU将自身的相位调整到与所述主时钟源的相位同步。
  11. 一种无线远端装置，其特征在于，包括：输入/输出设备、内存和处理器，
    所述处理器用于执行如下步骤：
    从与所述无线远端装置连接的多个BBU中确定一个BBU的时钟源为主时钟源，其它BBU的时钟源为从时钟源，所述其它BBU为所述多个BBU中除所述一个BBU之外的BBU；
    获取主时钟源的时钟信息；
    根据所述主时钟源的时钟信息同步各个从时钟源的时钟信息。
  12. 一种基带单元BBU之间时钟同步的***，其特征在于，包括多个基带单元BBU和多个无线远端单元RRU，所述多个RRU中包括一个用于时钟同步的RRU，所述多个BBU与所述多个RRU连接；
    所述用于时钟同步的RRU为上述权利要求6-10任一所述的无线远端装置。
  13. 一种基带单元BBU之间时钟同步的***，其特征在于，包括多个基带单元BBU、多个无线远端单元RRU和RRU集线器，所述多个RRU通过所述RRU集线器与所述BBU连接；
    所述RRU集线器上述权利要求6-10任一所述的无线远端装置。
PCT/CN2015/096809 2015-12-09 2015-12-09 一种基带单元之间时钟同步的方法、装置及*** WO2017096557A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/096809 WO2017096557A1 (zh) 2015-12-09 2015-12-09 一种基带单元之间时钟同步的方法、装置及***
CN201580085130.2A CN108370612B (zh) 2015-12-09 2015-12-09 一种基带单元之间时钟同步的方法、装置及***

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/096809 WO2017096557A1 (zh) 2015-12-09 2015-12-09 一种基带单元之间时钟同步的方法、装置及***

Publications (1)

Publication Number Publication Date
WO2017096557A1 true WO2017096557A1 (zh) 2017-06-15

Family

ID=59012509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/096809 WO2017096557A1 (zh) 2015-12-09 2015-12-09 一种基带单元之间时钟同步的方法、装置及***

Country Status (2)

Country Link
CN (1) CN108370612B (zh)
WO (1) WO2017096557A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112994817A (zh) * 2019-12-02 2021-06-18 普源精电科技股份有限公司 基于同步机实现多台信号源同步的***、方法及校准方法
WO2023102136A1 (en) * 2021-12-02 2023-06-08 Commscope Technologies Llc In-band signaling for ingress ptp packets at a master entity
WO2024148567A1 (zh) * 2023-01-12 2024-07-18 华为技术有限公司 一种通信方法及装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112640331A (zh) * 2018-08-29 2021-04-09 康普技术有限责任公司 具有多个控制器的集中式无线电接入网络中的时钟同步
CN111786741B (zh) * 2020-07-20 2023-02-28 哈尔滨海能达科技有限公司 一种cpri传输数据的时钟同步方法及相关装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101170399A (zh) * 2007-11-28 2008-04-30 中兴通讯股份有限公司 一种分布式基站中的时钟同步方法及分布式基站
WO2011143950A1 (zh) * 2011-01-26 2011-11-24 华为技术有限公司 一种实现时间同步的方法和装置
CN102316576A (zh) * 2011-09-21 2012-01-11 中兴通讯股份有限公司 一种无线基站时钟同步方法、***、基带框和交换框
CN102395189A (zh) * 2011-06-28 2012-03-28 中兴通讯股份有限公司 一种bbu堆叠***中时钟同步的方法和***
CN102624512A (zh) * 2012-02-22 2012-08-01 中兴通讯股份有限公司 一种实现时钟同步的方法和***

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101159933B (zh) * 2005-05-19 2010-09-08 华为技术有限公司 分体式基站***及其组网方法和基带单元
CN103259607A (zh) * 2012-02-21 2013-08-21 中兴通讯股份有限公司 时钟同步方法及装置
CN102781090B (zh) * 2012-06-28 2015-01-21 华为技术有限公司 一种多模基站及其实现方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101170399A (zh) * 2007-11-28 2008-04-30 中兴通讯股份有限公司 一种分布式基站中的时钟同步方法及分布式基站
WO2011143950A1 (zh) * 2011-01-26 2011-11-24 华为技术有限公司 一种实现时间同步的方法和装置
CN102395189A (zh) * 2011-06-28 2012-03-28 中兴通讯股份有限公司 一种bbu堆叠***中时钟同步的方法和***
CN102316576A (zh) * 2011-09-21 2012-01-11 中兴通讯股份有限公司 一种无线基站时钟同步方法、***、基带框和交换框
CN102624512A (zh) * 2012-02-22 2012-08-01 中兴通讯股份有限公司 一种实现时钟同步的方法和***

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112994817A (zh) * 2019-12-02 2021-06-18 普源精电科技股份有限公司 基于同步机实现多台信号源同步的***、方法及校准方法
CN112994817B (zh) * 2019-12-02 2022-07-26 普源精电科技股份有限公司 基于同步机实现多台信号源同步的***、方法及校准方法
WO2023102136A1 (en) * 2021-12-02 2023-06-08 Commscope Technologies Llc In-band signaling for ingress ptp packets at a master entity
WO2024148567A1 (zh) * 2023-01-12 2024-07-18 华为技术有限公司 一种通信方法及装置

Also Published As

Publication number Publication date
CN108370612A (zh) 2018-08-03
CN108370612B (zh) 2020-11-06

Similar Documents

Publication Publication Date Title
WO2017096557A1 (zh) 一种基带单元之间时钟同步的方法、装置及***
US11825433B2 (en) Synchronizing multiple-input/multiple-output signals in distributed antenna systems
US10306566B2 (en) Method and apparatus
CN102869086B (zh) 调整信号发送时间的方法和装置
US20200169345A1 (en) Methods and devices for synchronization in communication networks
US10390321B2 (en) Timing advance adjustment method and device
US9019898B2 (en) Multi-interface WLAN device having real and virtual dual band operation
EP3836692A1 (en) Resource processing method and device
US20130336237A1 (en) Adapter, base band processing unit and base station system
US20220124652A1 (en) IAB Timing Delta MAC CE Enhancement For Case #6 Timing Support
WO2013127321A1 (zh) 一种基带转接设备及其进行转接的方法
US9680586B2 (en) Method of controlling TDD Tx/Rx switching timing in cloud radio access network
US9455824B1 (en) Distributed network synchronization methods and architectures
CN112640517B (zh) 配置测量间隙模式
WO2022036547A1 (zh) 功率放大器芯片以及通信设备
WO2021160103A1 (zh) 一种小区全球标识cgi的处理方法及设备
AU2015303846B2 (en) Distributed antenna system to transport first cellular RF band concurrently with ethernet or second cellular rf band
US10292122B2 (en) Method and access point for maintaining synchronization among access points in radio access network
CN109474934B (zh) 一种基站***及基站扩容方法
KR101629405B1 (ko) 무선 인터컴 시스템 및 그의 중계 방법
JP2021158449A (ja) 通信装置
KR20150035218A (ko) 무선통신 단말기, 무선통신 시스템 및 무선통신 시스템의 데이터 송수신 방법
EP4142188B1 (en) Clock synchronization method for cpri transmission data, and related apparatus
US20230403662A1 (en) IAB Timing Delta MAC CE Enhancement for Case #6 Timing Support
US20230292096A1 (en) Ble link-cluster architecture

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15910032

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15910032

Country of ref document: EP

Kind code of ref document: A1