CN107135512A - A kind of Remote Radio Unit merges cell uplink capacity boost method and system - Google Patents

A kind of Remote Radio Unit merges cell uplink capacity boost method and system Download PDF

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Publication number
CN107135512A
CN107135512A CN201610109379.9A CN201610109379A CN107135512A CN 107135512 A CN107135512 A CN 107135512A CN 201610109379 A CN201610109379 A CN 201610109379A CN 107135512 A CN107135512 A CN 107135512A
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logic district
bbu
rnc
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CN107135512B (en
Inventor
詹建明
李军
刘志斌
刘涛
霍燚
余擎旗
滕伟
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ZTE Corp
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Priority to PCT/CN2016/103539 priority patent/WO2017148167A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H04W16/20—Network planning tools for indoor coverage or short range network deployment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

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

Abstract

A kind of Remote Radio Unit merges cell uplink capacity boost method and system, including：Multiple radio frequency remote unit RRUs are connected to one logic district of baseband processing unit BBU, RRU formation of base station；Multiple RRU report the RTWP value of each same frequency sector to give BBU units by Ir interfaces；The RTWP value of all same frequency sectors under logic district is reported RNC by BBU by off-gauge Iub interface；RNC by receive each same frequency sector under the logic district RTWP value and the logic district under the bottom of each sector make an uproar value, the RoT of all sectors under the logic district is calculated, RNC controls the up-link capacity of each sector according to RoT the and RoT thresholdings of each sector.Solve multiple RRU and merge into the problem of partial sector up-link capacity in the case of a logic district can not access than other larger sectors or experience difference, improve the up-link capacity that many RRU merge cells.

Description

A kind of Remote Radio Unit merges cell uplink capacity boost method and system
【Technical field】
The present invention relates to a kind of Remote Radio Unit cell combining technology, more precisely a kind of WCDMA is more Individual Remote Radio Unit merges the method and system that up-link capacity is lifted under cell conditions.
【Background technology】
With the development of mobile data services, the problems such as signal covering and network capacity, movement is had become The problem of Virtual network operator growing interest.
Prior art using BBU (Baseband Unit, Base Band Unit)+RRU (Remote Radio Unit, Remote Radio Unit) multichannel networking plan, can fast and effectively solve network depth covering etc. ask Topic.BBU has base-band resource sharing functionality, and RRU is responsible for the transmission-receiving function of signal, realizes wireless network system Communication between system and mobile station.
Generally using optical fiber connection between BBU and RRU, a BBU can support multiple RRU, multiple RRU A cell or multiple cells can be constituted, in network design, appropriate number of RRU can be selected to carry out Merge one cell of composition.
In WCDMA commercial networks, through the network design for merging cell frequently with multiple radio frequency remote unit RRUs Scheme, multiple radio frequency remote unit RRU sectors are scrambled using identical downlink scrambling code, as shown in figure 1, this Sample can reduce the switching of minizone or reduce scrambler resource planning amount, save the configuration of base band veneer, Such as in-door covering or highway or Along Railway.
After multiple radio frequency remote unit RRUs merge into a logic district, multiple sectors of same cell are adopted Scrambled with identical downlink scrambling code.But, as a logic district, RNC needs the up-link capacity to cell It is controlled.And from the point of view of the calculating of wireless uplink Capacity Theory, cell uplink capacity load=1- (1/RoT), Wherein RoT=RTWP/ cells bottom is made an uproar, so, controls of the RNC to cell uplink capacity mainly monitors noise incremental quantity General power RTWP (Received Total in RoT (Rise over Thermal noise) or reception bandwidth Wideband Power).Traditional scheme, in order to simplify processing, in base band side, in same logic district The RTWP measurement amounts of all sectors be compared, take the RTWP value of maximum to report RNC, as shown in figure 1, So when partial sector up-link capacity than it is larger when can cause that other sectors can not be accessed or business experience is poor.
In order to solve this problem, the present invention proposes the RTWP measurements point multiple sectors of same logic district RNC is not reported, and RNC sides calculate corresponding RoT respectively for multiple sectors in same logic district, real The ascending resource point sector management of existing same logic district.It can so avoid the occurrence of and hold when partial sector is up Amount causes other sectors not access or the problem of business experience is poor than larger.
【The content of the invention】
For drawbacks described above, merge cell uplink capacity boost side the invention provides a kind of Remote Radio Unit Method.
A kind of Remote Radio Unit merges cell uplink capacity boost method.Including：
Multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, the Remote Radio Unit One logic district of RRU formation；
Multiple radio frequency remote unit RRUs report the received total wideband power of each same frequency sector by Ir interfaces RTWP value gives BBU units；
Baseband processing unit BBU is by off-gauge Iub interface all same frequency sectors under logic district Received total wideband power RTWP value report radio network controller (RNC)；
Radio network controller (RNC) is connect by receiving the broadband of each same frequency sector under the logic district The bottom for receiving general power RTWP value and each sector under the logic district is made an uproar value, calculates the logic district Under all sectors RoT, radio network controller (RNC) is according to noise incremental quantity RoT and RoT of each sector Limit to control the up-link capacity of each sector.
Further comprise：Measure the RTWP value of the multiple sectors in same logic district；
Same frequency sector RTWP value is reported to give BBU units.
Described Ir interfaces are the interface between radio frequency remote unit RRU and baseband processing unit BBU, multiple Radio frequency remote unit RRU reports the received total wideband power RTWP value of each same frequency sector to base by the interface Tape handling unit BBU units.
The multiple radio frequency remote unit RRU is merged into behind a logic district, multiple sectors of same cell Scrambled using identical downlink scrambling code.
The bottom of each sector under logicality cell value of making an uproar all has been carried out initially in radio network controller (RNC) Change and preserve.
The radio network controller (RNC) side is calculated accordingly respectively for multiple sectors in same logic district Noise incremental quantity RoT, realize the ascending resource point sector management of same logic district.
The networking scene that merges merges networking for the radio frequency remote unit RRU of multiple equal transmission power sizes Scene.
It is described to merge the radio frequency remote unit RRU merging group that networking scene is multiple not equal transmission power sizes Net scene.
Merge cell system, including up-link capacity hoisting module, bag present invention additionally comprises a kind of Remote Radio Unit Include：
Logic district forms module, and multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, One logic district of radio frequency remote unit RRU formation；
RRU and BBU link blocks, multiple radio frequency remote unit RRUs report each same frequency to fan by Ir interfaces The received total wideband power RTWP value in area gives BBU units；
RTWP value reporting module, baseband processing unit BBU is by off-gauge Iub interface under logic district The received total wideband power RTWP values of all same frequency sectors report radio network controller (RNC)；
RoT obtains module, and radio network controller (RNC) is by receiving each same frequency under the logic district The received total wideband power RTWP value of sector and the bottom of each sector under the logic district are made an uproar value, are calculated The noise incremental quantity RoT of all sectors under the logic district, radio network controller (RNC) is according to each sector Noise incremental quantity RoT and noise incremental quantity RoT thresholdings control the up-link capacity of each sector.
The present invention against existing technologies, solves multiple radio frequency remote unit RRUs and merges into a logic district feelings Partial sector up-link capacity causes other sectors not access or the problem of business experience is poor than larger under condition, Improve the up-link capacity that many radio frequency remote unit RRUs merge cell.
【Brief description of the drawings】
Fig. 1 is the cell uplink noise incremental quantity RoT under the multiple Remote Radio Unit merging cell scenarios of background technology Obtain schematic diagram
A kind of Remote Radio Unit of Fig. 2 present invention merges cell uplink capacity boost method flow schematic diagram
Fig. 3 radio frequency remote unit RRUs of the present invention and baseband processing unit BBU workflow schematic diagram figures
Fig. 4 noise incremental quantity RoT calculating process schematic diagrames of the present invention
Fig. 5 merges the cell uplink under cell scenario for the Remote Radio Unit of the multiple same transmission powers of the present invention Noise incremental quantity RoT obtains schematic diagram
Fig. 6 merges in the cell under cell scenario for the Remote Radio Unit of multiple different transmission powers of the invention Row noise incremental quantity RoT obtains schematic diagram
【Embodiment】
It is described in detail with reference to Fig. 2-6 couples of present invention：
A kind of Remote Radio Unit merges cell uplink capacity boost method.Including step：
101：Multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, and the radio frequency is drawn One logic district of remote unit R RU formation；
201：Multiple radio frequency remote unit RRUs report the broadband reception of each same frequency sector total by Ir interfaces Power RTWP value gives BBU units；
301：Baseband processing unit BBU is by off-gauge Iub interface all same frequencies under logic district The received total wideband power RTWP value of sector reports radio network controller (RNC)；
401：Radio network controller (RNC) is by receiving the width of each same frequency sector under the logic district Made an uproar value with the bottom for receiving each sector under general power RTWP value and the logic district, calculate the logic The noise incremental quantity RoT of all sectors under cell, radio network controller (RNC) is according to the noise incremental quantity of each sector RoT and RoT thresholdings control the up-link capacity of each sector.
Step 201 further comprises：
21：Measure the received total wideband power RTWP value of the multiple sectors in same logic district；
22：Same frequency sector received total wideband power RTWP value is reported to give BBU units.
Step 401 includes：
41：The broadband reception that radio network controller (RNC) receives each same frequency sector of the logic district is total Sector bottom under power RTWP value and the logic district is made an uproar value；
42：Calculate the RoT values of all sectors under the logic district；
43：Radio network controller (RNC) controls each sector according to RoT the and RoT thresholdings of each sector Up-link capacity.
Merge cell system, including up-link capacity hoisting module present invention additionally comprises a kind of Remote Radio Unit, It is characterized in that, including：
Logic district forms module, and multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, One logic district of radio frequency remote unit RRU formation；
RRU and BBU link blocks, multiple radio frequency remote unit RRUs report each same frequency to fan by Ir interfaces The received total wideband power RTWP value in area gives BBU units；
RTWP value reporting module, baseband processing unit BBU is by off-gauge Iub interface under logic district The received total wideband power RTWP values of all same frequency sectors report radio network controller (RNC)；
RoT obtains module, and radio network controller (RNC) is by receiving each same frequency under the logic district The received total wideband power RTWP value of sector and the bottom of each sector under the logic district are made an uproar value, are calculated The noise incremental quantity RoT of all sectors under the logic district, radio network controller (RNC) is according to each sector Noise incremental quantity RoT and noise incremental quantity RoT thresholdings control the up-link capacity of each sector.
Specific embodiment 1：
Two or more radio frequency remote unit RRUs (Remote Radio Unit) are connected to the base of base station Tape handling unit BBU (Based band Unit), these radio frequency remote unit RRUs logically create one Logic district, multiple radio frequency remote unit RRU sectors are scrambled using identical downlink scrambling code, as shown in figure 5, The baseband processing unit BBU of base station is connected with radio network controller (RNC).Each fan under the logicality cell Value make an uproar in radio network controller (RNC) progress initialization preservation in the bottom in area.
Fig. 5 is the up-link capacity method that many radio frequency remote unit RRUs of lifting of the present invention merge cell, many The radio frequency remote unit RRU of individual equal transmission power size merges networking scene, all radio frequency remote unit RRUs Positioned at same grade, comprise the following steps：
The first step：
1~n radio frequency remote unit RRU all passes through Ir interfaces (radio frequency remote unit RRU and Base-Band Processing list Interface between first BBU) report the received total wideband power RTWP value of each same frequency sector to give Base-Band Processing list First BBU units；
Second step：
BBU is by off-gauge Iub interface (Iub interface) all with frequency under the logic district The received total wideband power RTWP value of point sector reports radio network controller (RNC)；
3rd step：
Radio network controller (RNC) is by receiving the broadband reception of each same frequency sector under the logic district Each sector under general power RTWP value (such as RTWP1, RTWP2 ... ... RTWPn) and the logic district Bottom make an uproar value, calculate the RoT of all sectors under the logic district, such as RoT1, RoT2 ... ... RoTn, Such as bottom of RoT1=RTWP1/ sectors 1 is made an uproar value, and radio network controller (RNC) increases according to the noise of respective sector RoT and noise incremental quantity RoT thresholdings is measured to control the up-link capacity of each sector.
Specific embodiment 2：
Two or more radio frequency remote unit RRUs (Remote Radio Unit) are connected to the base of base station Tape handling unit BBU (Based band Unit), these radio frequency remote unit RRUs are logically one and patrolled Cell is collected, multiple radio frequency remote unit RRU sectors are scrambled using identical downlink scrambling code, baseband processing unit BBU is connected with radio network controller (RNC).Value make an uproar all in wireless network in the bottom of each sector under the logicality cell Network controller RNC has carried out initialization and preserved.
Fig. 6 is that the up-link capacity method that many radio frequency remote unit RRUs of lifting of the present invention merge cell is different The radio frequency remote unit RRU of transmission power size merges the heterogeneous network scene of composition, including grand remote radio list First RRU and micro- radio frequency remote unit RRU, micro- radio frequency remote unit RRU is by grand radio frequency remote unit RRU Surround, comprise the following steps：
The first step：
1~n radio frequency remote unit RRU all passes through Ir interfaces (radio frequency remote unit RRU and Base-Band Processing list Interface between first BBU) report the received total wideband power RTWP value of each same frequency sector to give Base-Band Processing list First BBU units；
Second step：
Baseband processing unit BBU is by off-gauge Iub interface (Iub interface) the logic district Under the received total wideband power RTWP values of all same frequency sectors report radio network controller (RNC)；
3rd step：
Radio network controller (RNC) is by receiving the broadband reception of each same frequency sector under the logic district Each sector under general power RTWP value (such as RTWP1, RTWP2 ... ... RTWPn) and the logic district Bottom make an uproar value, calculate the noise incremental quantity RoT of all sectors under the logic district, such as RoT1, RoT2 ... ... RoTn, such as bottom of RoT1=RTWP1/ sectors 1 make an uproar value, and RNC is according to the noise of respective sector Increment RoT and noise incremental quantity RoT thresholdings control the up-link capacity of each sector.
Technical solution of the present invention against existing technologies, solves multiple radio frequency remote unit RRUs and merges into one and patrol Partial sector up-link capacity causes that other sectors can not be accessed or business experience is poor than larger under volume cell conditions The problem of, improve the up-link capacity that many radio frequency remote unit RRUs merge cell.
Above example is the preferred embodiments of the present invention, the invention is not restricted to above-described embodiment, for ability For the those of ordinary skill of domain, that is done on the basis of without departing substantially from the technology of the present invention principle is any apparent Change, belong to the present invention design and appended claims protection domain.

Claims (10)

1. a kind of Remote Radio Unit merges cell uplink capacity boost method, it is characterised in that including：
Multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, the Remote Radio Unit One logic district of RRU formation；
Multiple radio frequency remote unit RRUs report the received total wideband power of each same frequency sector by Ir interfaces RTWP value gives BBU units；
Baseband processing unit BBU is by off-gauge Iub interface all same frequency sectors under logic district Received total wideband power RTWP value report radio network controller (RNC)；
Radio network controller (RNC) is connect by receiving the broadband of each same frequency sector under the logic district The bottom for receiving general power RTWP value and each sector under the logic district is made an uproar value, calculates the logic district Under all sectors noise incremental quantity RoT, radio network controller (RNC) is according to the noise incremental quantity RoT of each sector And noise incremental quantity RoT thresholdings control the up-link capacity of each sector.
2. up-link capacity method for improving according to claim 1, it is characterised in that further comprise：
Measure the received total wideband power RTWP value of the multiple sectors in same logic district；
Same frequency sector received total wideband power RTWP value is reported to give baseband processing unit BBU units.
3. up-link capacity method for improving according to claim 1, it is characterised in that：Described Ir interfaces are to penetrate Interface between frequency extension unit RRU and baseband processing unit BBU, multiple radio frequency remote unit RRUs pass through The interface reports the RTWP value of each same frequency sector to give BBU units.
4. up-link capacity method for improving according to claim 1, it is characterised in that：The multiple remote radio Unit R RU is merged into behind a logic district, and multiple sectors of same cell are added using identical downlink scrambling code Disturb.
5. up-link capacity method for improving according to claim 1, it is characterised in that：It is each under the logic district Value make an uproar in radio network controller (RNC) progress initialization preservation in the bottom of sector.
6. up-link capacity method for improving according to claim 1, it is characterised in that：The wireless network control Device RNC sides calculate corresponding noise incremental quantity RoT respectively for multiple sectors in same logic district, realize same The ascending resource of one logic district point sector management.
7. up-link capacity method for improving according to claim 1, it is characterised in that：The merging networking scene For multiple equal transmission power sizes or multiple radio frequency remote unit RRUs of multiple not equal transmission power sizes Merge any one of networking scene.
8. a kind of Remote Radio Unit merges cell system, including up-link capacity hoisting module, it is characterised in that bag Include：
Logic district forms module, and multiple radio frequency remote unit RRUs are connected to the baseband processing unit BBU of base station, One logic district of radio frequency remote unit RRU formation；
RRU and BBU link blocks, multiple radio frequency remote unit RRUs report each same frequency to fan by Ir interfaces The received total wideband power RTWP value in area gives BBU units；
RTWP value reporting module, baseband processing unit BBU is by off-gauge Iub interface under logic district The received total wideband power RTWP values of all same frequency sectors report radio network controller (RNC)；
RoT obtains module, and radio network controller (RNC) is by receiving each same frequency under the logic district The received total wideband power RTWP value of sector and the bottom of each sector under the logic district are made an uproar value, are calculated The noise incremental quantity RoT of all sectors under the logic district, radio network controller (RNC) is according to each sector Noise incremental quantity RoT and noise incremental quantity RoT thresholdings control the up-link capacity of each sector.
9. Remote Radio Unit merges cell system according to claim 8, it is characterised in that further comprise：
RTWP computing modules, measure the received total wideband power RTWP value of the same multiple sectors in logic district；
RTWP value transport module, reports same frequency sector received total wideband power RTWP value to baseband processing unit BBU units.
10. Remote Radio Unit merges cell system according to claim 8, it is characterised in that：It is described to merge Networking scene is multiple remote radios of multiple equal transmission power sizes or multiple not equal transmission power sizes Unit R RU merges any one of networking scene.
CN201610109379.9A 2016-02-29 2016-02-29 Method and system for improving uplink capacity of radio remote unit merging cell Active CN107135512B (en)

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CN201610109379.9A CN107135512B (en) 2016-02-29 2016-02-29 Method and system for improving uplink capacity of radio remote unit merging cell
PCT/CN2016/103539 WO2017148167A1 (en) 2016-02-29 2016-10-27 Method and system for increasing uplink capacity of cell formed by combining radio remote units

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