WO2014166375A1 - 分布式基站及分布式基站中数据处理的方法和装置 - Google Patents
分布式基站及分布式基站中数据处理的方法和装置 Download PDFInfo
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- WO2014166375A1 WO2014166375A1 PCT/CN2014/074916 CN2014074916W WO2014166375A1 WO 2014166375 A1 WO2014166375 A1 WO 2014166375A1 CN 2014074916 W CN2014074916 W CN 2014074916W WO 2014166375 A1 WO2014166375 A1 WO 2014166375A1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/60—General implementation details not specific to a particular type of compression
- H03M7/6064—Selection of Compressor
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/60—General implementation details not specific to a particular type of compression
- H03M7/6064—Selection of Compressor
- H03M7/6082—Selection strategies
- H03M7/6094—Selection strategies according to reasons other than compression rate or data type
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- 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
- H04W88/085—Access point devices with remote components
Definitions
- the present invention relates to the field of communications, and in particular, to a method and apparatus for data processing in a distributed base station and a distributed base station. Background technique
- the distributed base station separates the baseband unit (BBU) and the remote radio unit (RRU) in the traditional macro base station, defines a unified public open wireless interface standard, and connects the two parts by using optical fiber or other transmission medium.
- the baseband unit (BBU) includes baseband processing, master control, transmission, clocking, etc.
- the baseband unit is small in size and flexible in mounting position.
- the remote radio unit (RRU) includes an intermediate frequency processing module, a transceiver module, a filter, and a power amplifier module.
- the digital intermediate frequency module performs digital up-conversion, A/D conversion, etc.; the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal; and then passes the power amplifier and the filtering module to transmit the radio frequency signal through the antenna port.
- Due to the small size and light weight the BBUs are generally deployed in the central equipment room.
- the optical fibers are connected to the RRUs deployed on the planning sites.
- the distributed base stations can effectively solve the problem of site
- the medium for transmitting IF signals between the BBU and the RRU needs to meet the requirements of high-speed data.
- the transmission bandwidth requirements are getting higher and higher.
- the deployed fiber resources are becoming more and more tense.
- the existing communication lines cannot meet the high-speed data transmission requirements, data delay or loss will occur.
- the solution of the prior art is to redeploy the optical fiber to expand the existing communication line, but the cost is high. Summary of the invention
- a technical problem to be solved by embodiments of the present invention is to provide a method and apparatus for data processing in a distributed base station and a distributed base station.
- the disadvantages of high bandwidth requirement and high deployment cost in the distributed base station in the prior art can be solved.
- the first aspect of the present invention provides a method for processing data in a distributed base station, including:
- the step of compressing the original data includes:
- the original data of the downlink is subjected to compression processing.
- the step of compressing the original data of the downlink includes:
- the signal transmitted by the BBU to the RRU is an OFDM orthogonal frequency division multiplexing signal
- the RRU is controlled to insert a preset CP cyclic prefix into a frame of the OFDM signal.
- the step of performing compression processing on the original data of the uplink includes:
- the step of adjusting the quantization bit width of the original data according to the first requirement value includes: according to the first The required value is calculated for the added noise level, and the quantization bit width of the original data is adjusted according to the noise size using the Dither dithering algorithm.
- the quantization bit width of the original data is adjusted according to the second required value.
- the step of adjusting the quantization bit width of the original data according to the second requirement value includes: according to the second The value is required to calculate the added noise level, and according to the noise size, the Dither dithering algorithm is used to adjust the quantization bit width of the original data.
- the received signal quality includes a signal to noise ratio SNR, a signal to interference plus noise ratio SINR, The reference signal receives power RSRP and carrier interference noise ratio CINR.
- a second aspect of the present invention provides a data processing apparatus in a distributed base station, including: a monitoring module, configured to monitor a transmission rate of original data transmitted between a BBU baseband unit and an RRU remote radio unit;
- a compression module configured to determine whether the transmission rate exceeds a preset value, and if yes, compress the original data.
- the compression module includes:
- An uplink compression unit configured to compress the original data of the uplink
- a downlink compression unit configured to perform compression processing on the original data of the downlink.
- the downlink compression unit includes:
- a detecting unit configured to detect that the signal transmitted by the BBU to the RRU is an OFDM orthogonal frequency division multiplexing signal
- control unit configured to control the RRU to insert a preset CP cyclic prefix into a frame of the OFDM signal.
- the uplink compression unit includes:
- a first obtaining unit configured to acquire a first required value of the received signal quality of the BBU
- a first adjusting unit configured to adjust a quantization bit width of the original data according to the first required value
- the first adjusting unit is configured to calculate, according to the first requirement value, a magnitude of the added noise, and according to the noise size, The quantization bit width of the original data is adjusted using a Dither dithering algorithm.
- the downlink compression unit includes: a second acquiring unit, configured to acquire a second required value of the received signal quality of the RRU, and a second adjusting unit, configured to adjust a quantization bit width of the original data according to the second required value.
- the second adjusting unit is configured to calculate, according to the second required value, an added noise size, and according to the noise size
- the quantization bit width of the original data is adjusted using a Dither dithering algorithm.
- the received signal quality includes a signal to noise ratio (SNR), a signal, and an interference.
- SNR signal to noise ratio
- RSRP reference signal received power
- CINR carrier-to-interference and noise ratio
- the original data is compressed, which can effectively reduce the processing of the BBU and the RRU hardware device.
- the overhead is to avoid the loss of data caused by the hardware processing capability of the hardware device and improve the reliability of the communication system.
- the hardware resources are redeployed to avoid the limitation of the communication line bandwidth between the BBU and the RRU, which reduces the cost of the communication system expansion.
- FIG. 1 is a schematic structural diagram of an apparatus for processing data of a distributed base station according to an embodiment of the present invention
- FIG. 2 is a schematic structural view of a compression module in 1;
- FIG. 3 is a schematic structural view of an uplink compression unit of FIG. 2;
- FIG. 4 is a schematic structural view of a downlink compression unit of FIG. 2;
- FIG. 5 is another schematic structural diagram of the downlink compression unit of FIG. 2;
- FIG. 4 is a schematic structural view of a downlink compression unit of FIG. 2;
- FIG. 5 is another schematic structural diagram of the downlink compression unit of FIG. 2;
- FIG. 4 is a schematic structural view of a downlink compression unit of FIG. 2;
- FIG. 5 is another schematic structural diagram of the downlink compression unit of FIG. 2;
- FIG. 5 is another schematic structural diagram of the downlink compression unit of FIG. 2;
- FIG. 6 is a schematic diagram of another structure of a data processing apparatus in a distributed base station according to an embodiment of the present invention.
- FIG. 7 is a schematic flow chart of a method for processing data in a distributed base station according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of another flow of a data processing method in a distributed base station according to an embodiment of the present invention.
- FIG. 1 is a schematic structural diagram of a data processing device in a distributed base station according to an embodiment of the present invention (hereinafter referred to as a processing device 1).
- the processing device 1 includes:
- the monitoring module 11 is configured to monitor a transmission rate of the original data transmitted between the BBU baseband unit and the RRU remote radio unit.
- the distributed base station separates the RRU (BaseBand Unit, BBU) and the RRU (Remote Radio Unit, RRU) in the traditional macro base station, and uses optical fibers or other transmission media to separate the two.
- BBU BaseBand Unit
- RRU Remote Radio Unit
- the monitoring module 11 monitors the transmission rate of the original data transmitted between the BBU and the RRU in the distributed base station, and the unit rate of the transmission rate is represented by a bit rate or a baud rate, and the data transmission rate of the original data between the two can pass through the system bandwidth. And the rate of the sample is determined.
- the system bandwidth is 20 MHz
- the quantization bit width is 16 bits
- the number of antennas is 4, and the number of sectors is 3.
- the original between the BBU and the RRU in the LTE system The transmission rate of the initial data is 11.8 Gbps.
- the compression module 12 is configured to determine whether the transmission rate exceeds a preset value, and if yes, compress the original data.
- the compression module 12 determines that the transmission rate of the original data acquired by the detection module 11 is greater than the preset value. The original data is compressed to reduce the processing overhead of the BBU and the RRU device, and prevent the hardware device from being overloaded and causing data loss.
- the processing method provided by the embodiment of the present invention can be applied not only to data transmitted between the BBU and the RRU, but also to data transmitted between the transmitting end and the receiving end of other devices.
- the data transmitted between the transmitting end of the device and the receiving end of the device is a digital signal.
- the transmission rate of the data transmitted between the transmitting end of the device and the receiving end of the device is detected to exceed a predetermined value, the transmitted data is compressed.
- the compression module 12 includes:
- the uplink compression unit 121 is configured to perform compression processing on the original data of the uplink.
- the downlink compression unit 122 is configured to perform compression processing on the original data of the downlink.
- the uplink is a distributed base station that receives a signal from the mobile terminal, where the distributed base station expresses that the RRU transmits the original data to the BBU, and the downlink is the distributed base station transmits the signal to the terminal device.
- the BBU transmits the original data to the RRU, and compresses the original data in the uplink and the downlink in the distributed base station, which can further reduce the hardware processing overhead of the BBU and the RRU.
- the uplink compression unit 121 includes:
- the first obtaining unit 1211 is configured to acquire a first required value of the received signal quality of the BBU.
- the first adjusting unit 1212 is configured to adjust a quantization bit width of the original data according to the first requirement value.
- the BBU in the uplink Received signal quality includes SNR (Signal to Noise Ratio, SNR for short), SINR (Signal to Interference plus Noise Ratio, SINR for short), RSRP (Reference Signal Receiving Power) Receive power, abbreviated as RSRP) and CINR (Carrier to Interference plus Noise Ratio, CINR for short).
- the method for determining the quality of the received signal is: obtaining the received signal quality of the terminal device according to the current uplink signal quality or the uplink historical statistical signal quality information, and if multiple terminal devices use the time division multiplexing to access the base station, the compression may be performed for each user.
- each terminal device has a received signal.
- OFDMA Orthogonal Frequency Division Multiple Access
- the maximum received signal quality of the plurality of terminal devices may be selected or averaged or calculated in other manners, which is not limited by the present invention.
- Data transmission can be based on OBSAI (Open Base Station Architecture Initiative, OBSAI) interface, CPRI (Common Public Radio Interface, CPRI), etc.
- Transmission medium includes twisted pair, coaxial cable Or a wired transmission medium such as an optical fiber and a wireless transmission medium including radio waves, microwaves, infrared rays, or lasers.
- the performance loss threshold is the received signal quality lost after the quantization noise is introduced, expressed in units of decibels dB.
- the first obtaining unit 1211 obtains a first required value of the received signal quality of the BBU.
- the first required value is a rated value that the receiving system needs to receive the received signal quality when the communication system is designed.
- the receiving end is a BBU, where the first A required value includes a performance loss threshold.
- the first adjustment module 1212 adjusts the quantization bit width of the original data according to the first requirement value, and the calculation method is:
- the power including thermal noise outside the power, the signal-to-noise ratio after introducing quantization noise is
- the performance loss threshold is ⁇ + ⁇ ) ⁇ .
- the quantization noise is obtained through the performance loss threshold, and the adjusted quantization bit width N is obtained by using the corresponding calculation formula.
- the quantization bit width of the data transmission between the BBU and the RRU is determined as follows. 13Bit, The first obtaining unit 1211 adjusts the quantization bit width according to the obtained signal-to-noise ratio and the performance loss threshold to be smaller than the original fixed bit width by 13 Bit, which can effectively reduce the transmission rate of the original data and reduce the processing overhead of the hardware device.
- the quantized bit width in Table 1 increases the sign bit of IBit, and considering the requirement of the peak specification, the quantization bit width can be appropriately increased, and the quantization bit width is not necessarily adjusted according to the above calculation method, and other methods can also be used.
- the adjusted quantization bit width is still reduced compared with the original fixed quantization bit width, which can reduce the transmission rate of the original data between the BBU and the RRU.
- the first adjusting unit 1212 or the second adjusting unit 1222 is configured to compress the original data according to the received signal quality by using the D ither algorithm, that is, determine the noise size of the Dither addition according to the signal to noise ratio and the performance loss threshold, or Transfer in the same way as in Table 3.
- the service data represents the number of bits of the original data
- the indication information indicates the number of bits after the original data signal is compressed.
- a complex number originally requires 32 bits (real 16 bits, imaginary 16 bits), after compression As long as 8*2bit, it is compressed to the original 50%. Examples of instructions are as follows: Indicates the number of real or imaginary bits after compression
- segmentation processing can also be performed.
- the compressed bits in the above table can only be 2, 4, 6, 8, 10, 12, 14, 16.
- the downlink compression unit 122 includes:
- the second obtaining unit 1221 is configured to acquire a second required value of the received signal quality of the RRU.
- the second adjusting unit 1222 is configured to adjust a quantization bit width of the original data according to the second requirement value.
- the compression method of the downlink compression unit 122 is similar to the uplink compression unit, and details are not described herein again.
- the downlink compression unit 122 includes:
- the detecting unit 1223 is configured to detect that the signal transmitted by the BBU to the RRU is OFDM orthogonal frequency division multiplexed signal.
- the control unit 1224 is configured to control the RRU to insert a preset CP cyclic prefix into a frame of the OFDM signal.
- the BBU needs to insert a CP (Cyclic Prefix, CP for short) into an OFDM frame after performing OFDM (Orthogonal Frequency Division Multiplexing, OFDM) modulation on the signal.
- CP Cyclic Prefix
- OFDM Orthogonal Frequency Division Multiplexing
- the original data is compressed, which can effectively reduce the processing of the BBU and the RRU hardware device.
- the overhead is to avoid the loss of data caused by the hardware processing capability of the hardware device and improve the reliability of the communication system.
- the hardware resources are redeployed to avoid the limitation of the communication line bandwidth between the BBU and the RRU, which reduces the cost of the communication system expansion.
- FIG. 6 is a schematic diagram of another structure of a data processing apparatus of a distributed base station according to an embodiment of the present invention, including a processor 61, a memory 62, an input device 63, and an output device 64, and a processor in the data processing device 1.
- the number of 61s may be one or more, and Figure 6 takes a processor as an example.
- the processor 61, the memory 62, the input device 63, and the output device 64 may be connected by a bus or other means, and the bus connection is exemplified in FIG.
- the memory 62 stores a set of program codes
- the processor 61 is configured to call the program code stored in the memory 62 for performing the following operations:
- the processor 61 is configured to execute: Compressing the original data of the uplink; and/or
- the original data of the downlink is subjected to compression processing.
- processor 61 is operative to:
- the step of the processor 61 for performing the adjusting the quantization bit width of the original data according to the first requirement value comprises:
- processor 61 is operative to:
- the quantization bit width of the original data is adjusted according to the second required value.
- the step of the processor 61 for performing the adjusting the quantization bit width of the original data according to the second requirement value comprises:
- processor 61 is operative to:
- the signal transmitted by the BBU to the RRU is an OFDM orthogonal frequency division multiplexing signal
- the RRU is controlled to insert a preset CP cyclic prefix into a frame of the OFDM signal.
- the overhead is to avoid the loss of data caused by the hardware processing capability of the hardware device and improve the reliability of the communication system.
- the hardware resources are redeployed to avoid the limitation of the communication line bandwidth between the BBU and the RRU, which reduces the cost of the communication system expansion.
- FIG. 7 is a schematic flowchart diagram of a method for processing data in a distributed base station according to the present invention, where the method includes:
- the distributed base station separates the RRU (BaseBand Unit, BBU) and the RRU (Remote Radio Unit, RRU) in the traditional macro base station, and uses optical fibers or other transmission media to separate the two.
- BBU BaseBand Unit
- RRU Remote Radio Unit
- the monitoring module 11 monitors the transmission rate of the original data transmitted between the BBU and the RRU in the distributed base station, and the unit rate of the transmission rate is represented by a bit rate or a baud rate, and the data transmission rate of the original data between the two can pass through the system bandwidth. And the rate of the sample is determined.
- the system bandwidth is 20 MHz
- the quantization bit width is 16 bits
- the number of antennas is 4, and the number of sectors is 3.
- the transmission rate of the original data between the BBU and the RRU in the LTE system is 11.8 Gbps.
- step 103 if the determination is yes, go to step 103. If no, go to step 104.
- the compression module 12 determines that the transmission rate of the original data acquired by the detection module 11 is greater than the preset value.
- the original data is compressed to reduce the processing overhead of the BBU and the RRU device, and prevent the hardware device from being overloaded and causing data loss.
- the compression process can compress the original data using the Dither algorithm, or use other methods.
- the original data is compressed, which can effectively reduce the processing of the BBU and the RRU hardware device.
- the overhead is to avoid the loss of data caused by the hardware processing capability of the hardware device and improve the reliability of the communication system.
- avoid BBU and RRU The hardware resources are redeployed due to the limitation of the communication line bandwidth, which reduces the cost of the communication system expansion.
- FIG. 8 is a schematic flowchart of another method for processing data in a distributed base station according to an embodiment of the present invention, where the method includes:
- the monitoring module 11 monitors the transmission rate of the original data transmitted between the BBU and the RRU in the distributed base station, and the unit rate of the transmission rate is represented by a bit rate or a baud rate, and the data transmission rate of the original data between the two may be It is determined by system bandwidth and utilization rate.
- system bandwidth is 20 MHz
- the quantization bit width is 16 bits
- the number of antennas is 4, and the number of sectors is 3
- the transmission rate of the original data between the BBU and the RRU in the LTE system is 11.8 Gbps.
- the compression module 12 determines whether the transmission rate exceeds a preset value. If yes, step 203 is performed, and if no, step 204 is performed.
- the distributed base station has an uplink and a downlink.
- the RRU sends the original data to the BBU.
- the BBU sends the original signal to the RRU.
- the receiving end of the original signal is a BBU, and the compression module 12 obtains a required value of the signal receiving quality of the BBU.
- the compression process can compress the original data using the Dither algorithm, or use other methods.
- the quantization bit width of the original data is adjusted to meet the required value, and the adjusted quantization bit width is smaller than the fixed quantization bit width, which reduces the transmission rate of the original data of the BBU and the RRU.
- the steps please refer to the description of the compression module, which will not be described here.
- the utility model By monitoring the transmission rate of the original data transmitted between the BBU and the RRU in the distributed base station, when the transmission rate is greater than the preset value, the original data is compressed, and
- the utility model reduces the processing overhead of the BBU and the RRU hardware device, avoids the loss of data caused by the insufficient hardware processing capability of the hardware device, and improves the reliability of the communication system.
- the hardware resources are redeployed to avoid the limitation of the communication line bandwidth between the BBU and the RRU, thereby reducing the cost of the communication system expansion.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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Abstract
本发明实施例公开了一种分布式基站中数据的处理方法,包括:监测基带单元(BBU)和远程射频单元(RRU)之间传输的原始数据的传输速率;判断所述传输速率是否超过预置值,若为是,将所述原始数据进行压缩处理。本发明实施例还公开了一种分布式基站中数据处理装置。采用本发明,能解决现有技术中的分布式基站中对带宽需求较高和部署成本高的不足。
Description
分布式基站及分布式基站中数据处理的方法和装置 技术领域
本发明涉及通信领域,尤其涉及一种分布式基站及分布式基站中数据 处理的方法和装置。 背景技术
分布式基站把传统的宏基站中的基带单元 (BBU ) 和远程射频单元 ( RRU )分离, 定义好统一的公共开放无线接口标准, 釆用光纤或者其它 传输媒介将这两部分连接起来。 基带单元 (BBU)包括基带处理、 主控、 传 输、时钟等功能,基带单元体积小、安装位置非常灵活。远程射频单元 (RRU) 包括中频处理模块、 收发信机模块、 滤波器和功放模块。 数字中频模块完 成数字上下变频、 A/D转换等; 收发信机模块完成中频信号到射频信号的 变换; 再经过功放和滤波模块, 将射频信号通过天线口发射出去。 由于体 积小、 重量轻, 一般将 BBU集中部署在中心机房内, 通过光纤与规划站 点上部署的 RRU进行连接, 分布式基站可以有效解决站址选择问题。
BBU和 RRU间传输中频信号的媒体需要满足高速数据量的要求, 随 着系统带宽、 天线和扇区化的增加、 多制式系统共站越来越多, 对传输带 宽需求越来越高, 现有部署的光纤资源显得越来越紧张, 当现有的通信线 路无法满足高速的数据传输要求时, 会造成数据的延时或丟失。 现有技术 的解决方式是重新部署光纤,对现有的通信线路进行扩容,但是成本较高。 发明内容
本发明实施例所要解决的技术问题在于, 提供一种分布式基站及分布 式基站中数据处理的方法和装置。可解决现有技术中的分布式基站中对带 宽需求较高和部署成本高的不足。
为了解决上述技术问题, 本发明第一方面提供了一种分布式基站中数 据的处理方法, 包括:
监测 BBU基带单元和 RRU远程射频单元之间传输的原始数据的传输
速率;
判断所述传输速率是否超过预置值, 若为是, 将所述原始数据进行压 缩处理。
在第一种可能的实现方式中,所述将所述原始数据进行压缩处理的步 骤包括:
将上行链路的所述原始数据进行压缩处理; 和 /或
将下行链路的所述原始数据进行压缩处理。
结合第一方面的第一种可能的实现方式, 在第二种可能的实现方式 中, 所述将下行链路的所述原始数据进行压缩处理的步骤包括:
检测到所述 BBU向所述 RRU传输的信号为 OFDM正交频分复用信 号;
控制所述 RRU将预置的 CP循环前缀插入到所述 OFDM信号的帧中。 结合第一方面的第一种可能的实现方式, 在第三种可能的实现方式 中,
所述将上行链路的所述原始数据进行压缩处理的步骤包括:
获取所述 BBU的接收信号质量的第一要求值;
根据该第一要求值调整所述原始数据的量化位宽。
结合第一方面的第三种可能的实现方式, 在第四种可能的实现方式 中, 所述将根据该第一要求值调整所述原始数据的量化位宽的步骤包括: 根据所述第一要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither 抖动算法调整所述原始数据的量化位宽。
结合第一方面的第一种可能的实现方式, 在第五种可能的实现方式 中,
获取所述 RRU的接收信号质量的第二要求值;
根据该第二要求值调整所述原始数据的量化位宽。
结合第一方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 所述将根据该第二要求值调整所述原始数据的量化位宽的步骤包括: 根据所述第二要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
结合第一方面的第三种可能的实现方式和第六种可能的实现方式,在 第七种可能的实现方式中, 所述接收信号质量包括信噪比 SNR、 信号与 干扰加噪声比 SINR、 参考信号接收功率 RSRP和载波干扰噪声比 CINR 中的任一种。
本发明第二方面提供了一种分布式基站中数据的处理装置, 包括: 监测模块,用于监测 BBU基带单元和 RRU远程射频单元之间传输的 原始数据的传输速率;
压缩模块, 用于判断所述传输速率是否超过预置值, 若为是, 则将所 述原始数据进行压缩处理。
在第一种可能的实现方式中, 所述压缩模块包括:
上行压缩单元, 用于将上行链路的所述原始数据进行压缩处理; 和 / 或
下行压缩单元, 用于将下行链路的所述原始数据进行压缩处理。
结合第二方面的第一种可能的实现方式, 在第二种可能的实现方式 中, 所述下行压缩单元包括:
检测单元, 用于检测到所述 BBU向所述 RRU传输的信号为 OFDM 正交频分复用信号;
控制单元, 用于控制所述 RRU 将预置的 CP 循环前缀插入到所述 OFDM信号的帧中。
结合第二方面的第一种可能的实现方式, 在第三种可能的实现方式 中, 所述上行压缩单元包括:
第一获取单元, 用于获取所述 BBU的接收信号质量的第一要求值; 第一调整单元, 用于根据该第一要求值调整所述原始数据的量化位 宽。
结合第二方面的第三种可能的实现方式, 在第四种可能的实现方式 中, 所述第一调整单元用于根据所述第一要求值计算加入的噪声大小, 并 根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
结合第二方面的第一种可能的实现方式, 在第五种可能的实现方式 中, 所述下行压缩单元包括:
第二获取单元, 用于获取所述 RRU的接收信号质量的第二要求值; 第二调整单元, 用于根据该第二要求值调整所述原始数据的量化位 宽。
结合第二方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 所述第二调整单元用于根据所述第二要求值计算加入的噪声大小, 并 根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
结合第二方面的第三种可能的实现方式和第六种可能的实现方式中 的任一种, 在第七种可能的实现方式中, 所述接收信号质量包括信噪比 SNR、 信号与干扰加噪声比 SINR、 参考信号接收功率 RSRP和载波干扰 噪声比 CINR中的任一种。
实施本发明实施例, 具有如下有益效果:
通过对分布式基站中 B B U和 RRU之间传输的原始数据的传输速率的 监测, 在该传输速率大于预置值时, 将所述原始数据进行压缩处理, 能有 效降低 BBU和 RRU硬件设备的处理开销 ,避免硬件设备硬件处理能力的 不足而造成数据的丟失,提高通信系统的可靠性。同时,避免 BBU和 RRU 之间的通信线路带宽的限制而重新部署硬件资源,降低了通信系统扩容的 成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对 实施例或现有技术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,对于本领域普通技术人员 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他的附 图。
图 1 是本发明实施例的一种分布式基站数据处理的装置的结构示意 图;
图 2是 1 中压缩模块的结构示意图;
图 3是图 2中上行压缩单元的结构示意图;
图 4是图 2中下行压缩单元的结构示意图;
图 5是图 2中下行压缩单元的另一种结构示意图;
图 6是本发明实施例的一种分布式基站中数据的处理装置的另一结构 示意图;
图 7是本发明实施例的一种分布式基站中数据的处理方法的流程示意 图;
图 8是本发明 实施例的一种分布式基站中数据处理方法的另一流程 示意图。
具体实施方式
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, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的 范围。
参见图 1至图 5 , 为本发明实施例的一种分布式基站中数据的处理装 置的结构示意图(以下简称处理装置 1) , 该处理装置 1 包括:
监测模块 11 , 用于监测 BBU基带单元和 RRU远程射频单元之间的 传输的原始数据的传输速率。
具体的, 分布式基站把传统的宏基站中的 RRU ( BaseBand Unit, 基 带单元, 简称 BBU ) 和 RRU ( Remote Radio Unit, 远程射频单元, 简称 RRU ) 分离, 釆用光纤或者其它传输介质将二者连接起来, 同时 BBU和 RRU 之间定义有统一的接口标准, 如 CPRI ( Common Public Radio Interface , 通用公共无线接口 ) 标准和 OBSAI ( Open Base Station Architecture Initiative , 开放式基站架构联盟) 标准。 监测模块 11监测分 布式基站中 B B U和 RRU之间传输的原始数据的传输速率,传输速率的单 位可用比特率或波特率来表示,二者之间的原始数据的数据传输率可以通 过系统带宽和釆样速率来确定, 例如, 在一个 LTE ( Long Term Evolution, 长期演进计划, 简称 LTE ) 系统中, 系统带宽为 20MHz, 量化位宽为 16 比特, 天线数为 4 , 扇区数为 3 , 则该 LTE系统中 BBU和 RRU之间的原
始数据的传输速率为 11.8Gbps。
压缩模块 12 , 用于判断所述传输速率是否超过预置值, 若为是, 则 将所述原始数据进行压缩处理。
具体的, BBU和 RRU之间传输的原始数据的传输速率越高, 对 BBU 和 RRU的硬件处理能力的要求就会越高, 当二者之间传输的原始数据的 传输速率超出 BBU和 RRU的处理能力时, 会造成原始数据的丟失, 降低 硬件设备的可靠性, 通过设置一个传输速率的预置值, 压缩模块 12在判 断检测模块 11获取的原始数据的传输速率大于该预置值时, 对该原始数 据进行压缩处理, 降低 BBU和 RRU设备的处理开销, 防止硬件设备过载 而导致数据丟失。
可以理解的是, 本发明实施例的提供的处理方法不仅可以应用到 BBU和 RRU之间传输的数据, 还可以应用到其他的设备发射端和接收端 之间传输的数据。 设备发射端和设备接收端之间传输的数据为数字信号, 当检测到设备发射端与设备接收端之间传输的数据的传输速率超过预定 值时, 对该传输的数据进行压缩处理。
进一步的, 参见图 2 , 压缩模块 12包括:
上行压缩单元 121 , 用于将上行链路的所述原始数据进行压缩处理。 下行压缩单元 122 , 用于将下行链路的所述原始数据进行压缩处理。 具体的, 在分布式基站中, 上行链路为分布式基站接收来自移动终端 的信号, 在该分布式基站内部表现为 RRU向 BBU传输原始数据, 下行链 路为分布式基站发射信号至终端设备, 在该分布式基站内部表现为 BBU 向 RRU传输原始数据, 对分布式基站中的上行链路和下行链路中的原始 数据进行压缩, 能进一步的降低 BBU和 RRU的硬件处理开销。
优选的, 参见图 3 , 上行压缩单元 121 包括:
第一获取单元 1211 , 用于获取所述 BBU的接收信号质量的第一要求 值。
第一调整单元 1212 , 用于根据该第一要求值调整所述原始数据的量 化位宽。
具体的, 在量化位宽为 12Bit位的分布式基站中, 上行链路中 BBU
的接收信号质量包括 SNR ( Signal to Noise Ratio , 信噪比, 简称 SNR )、 SINR ( Signal to Interference plus Noise Ratio , 信号与干扰力口噪声比, 简 称 SINR )、 RSRP ( Reference Signal Receiving Power, 参考信号接收功率, 简称 RSRP ) 和 CINR ( Carrier to Interference plus Noise Ratio , 载波干扰 噪声比, 简称 CINR ) 中的任一种。 接收信号质量的确定方法为: 根据当 前上行信号质量或上行历史统计信号质量信息获得终端设备的接收信号 质量, 若多个终端设备釆用时分复用接入基站, 则可以针对每个用户进行 压缩, 若不能区分多个终端设备釆用码分复用或 OFDMA ( Orthogonal Frequency Division Multiple Access , 正交频分多址 , 简称 OFDMA ) 等方 式接入, 则此时对应每个终端设备有一个接收信号质量, 则可以选取多个 终端设备中最大的接收信号质量或者取平均值或釆用其他方式进行计算, 本发明不作限制。 数据传输可以基于 OBSAI ( Open Base Station Architecture Initiative , 开放式基站结构同盟, 简称 OBSAI )接口, CPRI ( Common Public Radio Interface , 通用公共无线接口, 简称 CPRI ) 等, 传输介质包括双绞线、 同轴电缆或光纤等有线传输介质与包括无线电波、 微波、 红外线或激光等无线传输介质。
定义性能损失门限,性能损失门限为引入量化噪声后损失的接收信号 质量, 用单位分贝 dB表示。 第一获取单元 1211获取 BBU的接收信号质 量的第一要求值, 第一要求值为通信系统在设计时, 要求接收端的接收信 号质量达到的额定值, 此处接收端为 BBU, 此处的第一要求值包括性能 损失门限。 第一调整模块 1212根据该第一要求值调整所述原始数据的量 化位宽, 举例计算方法为:
性能损失门限为 ^^^^ +^)^ 。 根据信噪比计算得到 然后通过性能 损失门限得到量化噪声 , 利用相应的计算公式得到调整后的量化位宽 N, 如表 1所示, 4艮定 BBU和 RRU之间数据传输的量化位宽为 13Bit,
第一获取单元 1211根据获取的信噪比和性能损失门限调整后的量化位宽 均小于原来的固定位宽 13Bit, 能有效的减小原始数据的传输速率, 降低 硬件设备的处理开销。
表 1
其中, 表 1 中量化位宽中增加了 IBit的符号位, 同时考虑到峰值规 格的要求, 可以适当增加量化位宽, 并不一定按照上述的计算方法调整量 化位宽, 也可以釆用其他方法来调整量化位宽, 调整后的量化位宽与原来 固定的量化位宽相比仍然是减少的,能降低 BBU和 RRU之间原始数据的 传输速率。
优选的,第一调整单元 1212或第二调整单元 1222用于根据接收信号 质量釆用 D ither算法对原始数据进行压缩处理,即根据信噪比和性能损失 门限确定 Dither加入的噪声大小, 也可以釆用表 3的方式进行传送。
光纤或其他传输介质中的信号传输格式:
指示信息 (X比特) 业务数据 (y比特)
表 2
表 2中, 业务数据表示原始数据的比特数, 指示信息表示对该原始数 据信号进行压缩后的比特数, 如一个复数原来需要 32比特表示 (实部 16 比特, 虚部 16比特), 压缩后只要 8*2bit, 压缩到原来的 50%。 指示信息 举例如下:
指示信息 压缩后实部或虚部比特数
0000 1
0001 2
0010 3
0011 4
0100 5
0101 6
0110 7
0111 8
1000 9
1001 10
1010 11
1011 12
1100 13
1101 14
1110 15
1111 16
表 3
同时, 为了降低指示信息所需要的比特数, 也可以进行分段处理, 如 上表中压缩比特只能为 2, 4, 6, 8, 10, 12, 14, 16。
优选的, 下行压缩单元 122包括:
第二获取单元 1221, 用于获取所述 RRU的接收信号质量的第二要求 值。
第二调整单元 1222, 用于根据该第二要求值调整所述原始数据的量 化位宽。
具体的, 该下行压缩单元 122的压缩方法与上行压缩单元相似, 此处 不再敖述。
优选的, 下行压缩单元 122包括:
检测单元 1223, 用于检测到所述 BBU 向所述 RRU 传输的信号为
OFDM正交频分复用信号。
控制单元 1224 , 用于控制所述 RRU将预置的 CP循环前缀插入到所 述 OFDM信号的帧中。
具体的, 在现有技术中, BBU对信号进行 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用, 简称 OFDM ) 调制后需 要在 OFDM帧中插入 CP ( Cyclic Prefix, 循环前缀, 简称 CP ), 假设一 个 OFDM帧中包含 14个 OFDM符号, CP占用一个 OFDM符号的长度, 导致 BBU至 RRU的下行链路的传输速率增加。检测单元 1223检测到 BBU 向 RRU传输的信号为 OFDM信号, 控制单元 1224控制 RRU将预置的 CP插入到 OFDM信号的帧中, 这样, 将插入 CP的操作在 RRU侧实现, 能有效的降低下行链路的传输速率。
通过对分布式基站中 B B U和 RRU之间传输的原始数据的传输速率的 监测, 在该传输速率大于预置值时, 将所述原始数据进行压缩处理, 能有 效降低 BBU和 RRU硬件设备的处理开销 ,避免硬件设备硬件处理能力的 不足而造成数据的丟失,提高通信系统的可靠性。同时,避免 BBU和 RRU 之间的通信线路带宽的限制而重新部署硬件资源,降低了通信系统扩容的 成本。
参见图 6 , 为本发明实施例的一种分布式基站的数据处理装置的另一 种结构示意图, 包括处理器 61、 存储器 62、 输入装置 63和输出装置 64 , 数据处理装置 1 中的处理器 61的数量可以是一个或多个, 图 6以一个处 理器为例。 本发明的一些实施例中, 处理器 61、 存储器 62、 输入装置 63 和输出装置 64可通过总线或其他方式连接, 图 6中以总线连接为例。
其中, 存储器 62中存储一组程序代码, 且处理器 61用于调用存储器 62中存储的程序代码, 用于执行以下操作:
监测 BBU基带单元和 RRU远程射频单元之间的传输的原始数据的传 输速率;
判断所述传输速率是否超过预置值, 若为是, 将所述原始数据进行压 缩处理。
进一步的, 在本发明的一些实施例中, 处理器 61用于执行:
将上行链路的所述原始数据进行压缩处理; 和 /或
将下行链路的所述原始数据进行压缩处理。
在本发明的另一些实施例中, 处理器 61用于执行:
获取所述 BBU的接收信号质量的第一要求值;
根据该第一要求值调整所述原始数据的量化位宽。
进一步的, 在本发明的一些实施例中, 处理器 61用于执行所述将根 据该第一要求值调整所述原始数据的量化位宽的步骤包括:
根据所述第一要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
在本发明的一些实施例中, 处理器 61用于执行:
获取所述 RRU的接收信号质量的第二要求值;
根据该第二要求值调整所述原始数据的量化位宽。
进一步的, 在本发明的一些实施例中, 处理器 61用于执行所述将根 据该第二要求值调整所述原始数据的量化位宽的步骤包括:
根据所述第二要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
在本发明的一些实施例中, 处理器 61用于执行:
检测到所述 BBU向所述 RRU传输的信号为 OFDM正交频分复用信 号;
控制所述 RRU将预置的 CP循环前缀插入到所述 OFDM信号的帧中。 通过对分布式基站中 B B U和 RRU之间传输的原始数据的传输速率的 监测, 在该传输速率大于预置值时, 将所述原始数据进行压缩处理, 能有 效降低 BBU和 RRU硬件设备的处理开销 ,避免硬件设备硬件处理能力的 不足而造成数据的丟失,提高通信系统的可靠性。同时,避免 BBU和 RRU 之间的通信线路带宽的限制而重新部署硬件资源,降低了通信系统扩容的 成本。
参见图 7 , 为本发明的一种分布式基站中数据的处理方法的流程示意 图, 该方法包括:
101、 检测 BBU基带单元和 RRU远程射频单元之间的传输原始数据
的传输速率。
具体的, 分布式基站把传统的宏基站中的 RRU ( BaseBand Unit, 基 带单元, 简称 BBU ) 和 RRU ( Remote Radio Unit, 远程射频单元, 简称 RRU ) 分离, 釆用光纤或者其它传输介质将二者连接起来, 同时 BBU和 RRU 之间定义有统一的接口标准, 如 CPRI ( Common Public Radio Interface , 通用公共无线接口 ) 标准和 OBSAI ( Open Base Station Architecture Initiative , 开放式基站架构联盟) 标准。 监测模块 11监测分 布式基站中 B B U和 RRU之间传输的原始数据的传输速率,传输速率的单 位可用比特率或波特率来表示,二者之间的原始数据的数据传输率可以通 过系统带宽和釆样速率来确定, 例如, 在一个 LTE ( Long Term Evolution, 长期演进计划, 简称 LTE ) 系统中, 系统带宽为 20MHz, 量化位宽为 16 比特, 天线数为 4 , 扇区数为 3 , 则该 LTE系统中 BBU和 RRU之间的原 始数据的传输速率为 11.8Gbps。
102、 判断所述传输速率是否超过预定值。
具体的, 若判断为是, 执行步骤 103、 若为否, 执行步骤 104。
103、 将所述原始数据进行压缩处理。
具体的, BBU和 RRU之间传输的原始数据的传输速率越高, 对 BBU 和 RRU的硬件处理能力的要求就会越高, 当二者之间传输的原始数据的 传输速率超出 BBU和 RRU的处理能力时, 会造成原始数据的丟失, 降低 硬件设备的可靠性, 通过设置一个传输速率的预置值, 压缩模块 12在判 断检测模块 11获取的原始数据的传输速率大于该预置值时, 对该原始数 据进行压缩处理, 降低 BBU和 RRU设备的处理开销, 防止硬件设备过载 而导致数据丟失。 压缩处理可以釆用 Dither 算法对原始数据进行压缩处 理, 也可以釆用其他方法。
104、 不压缩, 按常规流程操作。
通过对分布式基站中 B B U和 RRU之间传输的原始数据的传输速率的 监测, 在该传输速率大于预置值时, 将所述原始数据进行压缩处理, 能有 效降低 BBU和 RRU硬件设备的处理开销 ,避免硬件设备硬件处理能力的 不足而造成数据的丟失,提高通信系统的可靠性。同时,避免 BBU和 RRU
之间的通信线路带宽的限制而重新部署硬件资源,降低了通信系统扩容的 成本。
参见图 8 , 为本发明实施例的一种分布式基站中数据的处理方法的另 一流程示意图, 该方法包括:
201、检测基带单元和 RRU远程射频单元之间的传输的原始数据的传 输速率。
具体的, 监测模块 11监测分布式基站中 BBU和 RRU之间传输的原 始数据的传输速率, 传输速率的单位可用比特率或波特率来表示, 二者之 间的原始数据的数据传输率可以通过系统带宽和釆用速率来确定, 例如, 在一个 LTE ( Long Term Evolution , 长期演进计划, 简称 LTE ) 系统中, 系统带宽为 20MHz, 量化位宽为 16 比特, 天线数为 4 , 扇区数为 3 , 则 该 LTE系统中 BBU和 RRU之间的原始数据的传输速率为 11.8Gbps。
202、 判断所述传输速率是否超过预置值。
具体的, 压缩模块 12判断所述传输速率是否超过预置值, 若为是, 执行步骤 203 , 若为否, 执行步骤 204。
203、 获取该原始数据的接收端的信号接收质量的要求值。
具体的, 分布式基站有上行链路和下行链路, 在上行链路中, RRU 将原始数据发送至 BBU, 在下行链路中, BBU将原始信号发送至 RRU, 以上行链路为例, 原始信号的接收端为 BBU, 压缩模块 12获取该 BBU 的信号接收质量的要求值。压缩处理可以釆用 Dither算法对原始数据进行 压缩处理, 也可以釆用其他方法。
204、 不压缩, 按照常规流程操作。
205、 根据该要求值调整所述原始数据的量化位宽。
具体的, 根据步骤 203获取的要求值, 调整原始数据的量化位宽以满 足该要求值,调整后的量化位宽小于固定的量化位宽,降低了 BBU和 RRU 之原始数据的传输速率, 详细的步骤请参照压缩模块的说明, 此处不再敖 述。
通过对分布式基站中 B B U和 RRU之间传输的原始数据的传输速率的 监测, 在该传输速率大于预置值时, 将所述原始数据进行压缩处理, 能有
效降低 BBU和 RRU硬件设备的处理开销 ,避免硬件设备硬件处理能力的 不足而造成数据的丟失,提高通信系统的可靠性。同时,避免 BBU和 RRU 之间的通信线路带宽的限制而重新部署硬件资源,降低了通信系统扩容的 成本。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分 流程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存 储于一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法 的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆 体 ( Read-Only Memory , ROM ) 或随机存 己忆体 ( Random Access Memory, RAM ) 等。
以上所揭露的仅为本发明一种较佳实施例而已,当然不能以此来限定 本发明之权利范围,本领域普通技术人员可以理解实现上述实施例的全部 或部分流程, 并依本发明权利要求所作的等同变化, 仍属于发明所涵盖的 范围。
Claims
1、 一种分布式基站中数据的处理方法, 其特征在于, 包括:
监测 BBU基带单元和 RRU远程射频单元之间传输的原始数据的传输 速率;
判断所述传输速率是否超过预置值, 若为是, 将所述原始数据进行压 缩处理。
2、 如权利要求 1所述的方法, 其特征在于, 所述将所述原始数据进行 压缩处理的步骤包括:
将上行链路的所述原始数据进行压缩处理; 和 /或
将下行链路的所述原始数据进行压缩处理。
3、 如权利要求 2所述的方法, 其特征在于, 所述将下行链路的所述原 始数据进行压缩处理的步骤包括:
检测到所述 BBU向所述 RRU传输的信号为 OFDM正交频分复用信号; 控制所述 RRU将预置的 CP循环前缀插入到所述 OFDM信号的帧中。
4、 如权利要求 2所述的方法, 其特征在于, 所述将上行链路的所述原 始数据进行压缩处理的步骤包括:
获取所述 BBU的接收信号质量的第一要求值;
根据该第一要求值调整所述原始数据的量化位宽。
5、 如权利要求 4所述的方法, 其特征在于, 所述将根据该第一要求值 调整所述原始数据的量化位宽的步骤包括:
根据所述第一要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
6、 如权利要求 2所述的方法, 其特征在于, 所述将下行链路的所述原 始数据进行压缩处理的步骤包括:
获取所述 RRU的接收信号质量的第二要求值;
根据该第二要求值调整所述原始数据的量化位宽。
7、 如权利要求 6所述的方法, 其特征在于, 所述将根据该第二要求值 调整所述原始数据的量化位宽的步骤包括:
根据所述第二要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither抖动算法调整所述原始数据的量化位宽。
8、 如权利要求 4-7任一项所述的方法, 其特征在于, 所述接收信号质 量包括信噪比 SNR、 信号与干扰加噪声比 SINR、 参考信号接收功率 RSRP 和载波干扰噪声比 CINR中的任一种。
9、 一种分布式基站系统中数据的处理装置, 其特征在于, 包括: 监测模块, 用于监测 BBU基带单元和 RRU远程射频单元之间传输的 原始数据的传输速率;
压缩模块, 用于判断所述传输速率是否超过预置值, 若为是, 则将所 述原始数据进行压缩处理。
10、 如权利要求 9所述的装置, 其特征在于, 所述压缩模块包括: 上行压缩单元, 用于将上行链路的所述原始数据进行压缩处理; 和 /或 下行压缩单元, 用于将下行链路的所述原始数据进行压缩处理。
11、如权利要求 10所述的装置,其特征在于, 所述下行压缩单元包括: 检测单元, 用于检测到所述 BBU向所述 RRU传输的信号为 OFDM正 交频分复用信号;
控制单元, 用于控制所述 RRU 将预置的 CP 循环前缀插入到所述 OFDM信号的帧中。
12、如权利要求 10所述的装置,其特征在于,所述上行压缩单元包括:
第一获取单元, 用于获取所述 BBU的接收信号质量的第一要求值; 第一调整单元,用于根据该第一要求值调整所述原始数据的量化位宽。
13、 如权利要求 12所述的装置, 其特征在于, 所述第一调整单元用于 根据所述第一要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither 抖动算法调整所述原始数据的量化位宽。
14、如权利要求 10所述的装置,其特征在于,所述下行压缩单元包括: 第二获取单元, 用于获取所述 RRU的接收信号质量的第二要求值; 第二调整单元,用于根据该第二要求值调整所述原始数据的量化位宽。
15、 如权利要求 14所述的装置, 其特征在于, 所述第二调整单元用于 根据所述第二要求值计算加入的噪声大小, 并根据该噪声大小釆用 Dither 抖动算法调整所述原始数据的量化位宽。
16、 如权利要求 12-15 任一项所述的装置, 其特征在于, 所述接收信 号质量包括信噪比 SNR、 信号与干扰加噪声比 SINR、 参考信号接收功率 RSRP和载波干扰噪声比 CINR中的任一种。
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