CN103260167A - Method and system for lowering cell interference - Google Patents
Method and system for lowering cell interference Download PDFInfo
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- CN103260167A CN103260167A CN2013101369288A CN201310136928A CN103260167A CN 103260167 A CN103260167 A CN 103260167A CN 2013101369288 A CN2013101369288 A CN 2013101369288A CN 201310136928 A CN201310136928 A CN 201310136928A CN 103260167 A CN103260167 A CN 103260167A
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Abstract
The invention discloses a method and system for lowering cell interference. According to the method and system for lowering cell interference, different geographical positions in each cell are divided, cell groups are allocated according to network planning needs, the cell groups comprise more than one group, M terminals exist in the coverage area of each group, M>=1, different carrier waves or different time slots of the same carrier wave are distributed to the terminals belonging to different groups in the same cell or the terminals located in adjacent groups of adjacent cells, and when the terminals in one cell are connected to the cell, the pre-allocated carrier waves and the time slots are distributed to the groups where the terminals are located respectively, and the terminals are connected to the cell according to the distributed carrier waves and the time slots. The terminals belonging to different groups are preferentially connected to the different pre-allocated carrier waves and the time slots, so that good space isolation degree is generated among users, the cell interference is effectively lowered, user perception in the cells is improved, and network communication quality is improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and system that reduces area interference.
Background technology
3G network uses the distributed base station framework in a large number, the multichannel distributing cell is being carried out in the process of indoor covering, uses the indoor covering of the Optical Fiber Transmission distribution mode solution large stadium of BBU+RRU usually, as shown in Figure 1.BBU (Building Baseband Unit, indoor baseband processing unit) the concentrated machine room that is placed on, RRU (Remote Radio Unit, Remote Radio Unit) can be mounted to floor, need to be connected with optical fiber between BBU and the RRU, RRU is connected to antenna by coaxial cable and power splitter (coupler) etc. again, and namely trunk adopts optical fiber, branch road adopts coaxial cable, and a BBU can support a plurality of RRU.
For down direction: optical fiber is directly linked RRU from BBU, what transmit between BBU and the RRU is baseband digital signal, the base station signal that can control certain user is launched from the RRU passage of appointment like this, can reduce the interference to user on other passages of this residential quarter so greatly.
For up direction: the user mobile phone signal is received by nearest passage, passes to the base station from this passage through optical fiber then, so also can reduce the interference between the user on the different passages greatly.
The BBU+RRU scheme is very flexible for capacity configuration, and demand under the prerequisite that does not change RRU and indoor distributed system, is supported the dilatation of every passage from 1/6 carrier wave to 3 carrier waves by disposing BBU by measure.
Each passage or RRU cover first floor or multi-story, suppose that bandwidth is the networking residential quarter of 5M, be divided into three carrier wave f1, f2 and f3, describe with most typical two kinds of scenes: the Stall of residential quarter, Building A 1 same floor in many buildings of scene 1() uses carrier wave f1, f2 and f3 respectively to the 3rd buildings, and the Stall of residential quarter, Building B 2 also uses carrier wave f1, f2 and f3 respectively to the 3rd buildings;
And at many floors of scene 2(same storied building) the 4th buildings of residential quarter 1 use carrier wave f1, f2 and f3 respectively to the 6th buildings, the Stall of residential quarter 2 also uses carrier wave f1, f2 and f3 respectively to the 3rd buildings.
Above-mentioned two scene work schematic diagrames as shown in Figure 2, each floor of above-mentioned two scenes has certain number of users to exist.Under the default situations, the user selects corresponding carrier wave and time slot to insert according to the operating position of carrier resource, just randomness ground access carrier and time slot.This accidental access method can cause following situation to take place:
Situation one, under same residential quarter, the different user that is in adjacency channel (contiguous floors) is easy to insert the different time-gap of same carrier wave or the identical time slot of different carrier (as the user of F1 layer in Building A among Fig. 2 and the user of F2 layer);
The different user of situation two, neighbor cell adjacency channel (system's internal strength floor of different districts) is easy to insert (the user of the user of Building A F1 layer and Building B F1 layer in as Fig. 2 on the identical time slot of same carrier wave, the user of high building F3 layer and the user of F4 layer, isolation is very poor).
Continuous increase along with number of users, be linked into the probability of carrier wave with time slot and just increase thereupon, area interference increases gradually, when interference reach a certain height, the Cell Edge User network performance will be subjected to very big influence (in fact the user of inside, residential quarter also can be affected, and the customer impact that just is in cell edge is more obvious), thereby causes cell capacity to descend, especially identical networking residential quarter, the interference effect in minizone and the residential quarter is comparatively serious.
In sum, for under indoor environment, carrying out the residential quarter when covering, be subjected to serious area interference owing to insert at random to cause being linked into carrier wave with the user of time slot in the prior art, influence user's perception, cause very big negative effect to network operation, concrete shortcoming is as follows:
(1) for the multichannel residential quarter, can not be respectively to the pre-configured different carrier wave of each passage and time slot, the user can not preferentially insert pre-configured carrier wave and time slot.
(2) be in the user of indoor cell adjacency channel, be easy to insert with carrier wave with time slot or with the carrier wave different time-gap, cause area interference to promote.
(3) neighbor cell is if identical networking, and area interference is comparatively obvious.
(4) when the user more for a long time, the user network performance that is in cell edge descends, and influences user's perception.
Summary of the invention
(1) technical problem that will solve
At above-mentioned defective, the technical problem to be solved in the present invention is: how to reduce area interference, improve the communication quality of adjacency channel user and Cell Edge User.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of method that reduces area interference, it is characterized in that, may further comprise the steps:
S1, diverse geographic location in each residential quarter is divided, and according to the grouping of network planning demand allocating cell, comprised the grouping greater than in the described cell group, wherein M terminal arranged, M 〉=1 in each described grouping coverage;
S2, be the pre-configured different carrier wave of different grouping and time slot;
S3, when having terminal to insert described residential quarter in the described residential quarter, be respectively the pre-configured carrier wave of described terminal distribution and time slot according to the grouping under the described terminal, make described terminal insert described residential quarter according to the carrier wave and the time slot that distribute.
Further, described step S1 specifically comprises:
Divide described grouping according to radio frequency remote unit RRU, with grouping of a plurality of described RRU configurations, or with N grouping of a described RRU configuration, wherein the minimum value of N is 1, and maximum is the number of active lanes of described RRU.
Further, described RRU is divided into single channel, binary channels, four-way or eight passages, the antenna of the corresponding described RRU of each passage of described RRU.
Further, pre-configured different carrier wave and time slot specifically comprise among the described step S2:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
Further, distinguish different grouping among the described step S2 and be according to the cell identification of residential quarter, described grouping place number and described packet identification number common decision that is grouped in the described residential quarter, wherein said cell identification number is the mark of sign different districts, and described packet identification number is the uniquely tagged of different grouping in the identifying cells.
Further, described step S3 specifically comprises:
S31, when having terminal to insert described residential quarter in the described residential quarter, judge the grouping of each terminal attaching respectively;
S32, search pre-configured carrier wave and the time slot of grouping of described terminal attaching respectively;
S33, be respectively the described pre-configured carrier wave of described terminal distribution and time slot;
S34, described terminal insert described residential quarter according to carrier wave and the time slot that step S33 distributes respectively.
For solving the problems of the technologies described above, the present invention also provides a kind of system that reduces area interference, comprising:
First dispensing unit, second dispensing unit and access unit;
Described first dispensing unit is divided diverse geographic location in each residential quarter, and according to the grouping of network planning demand allocating cell, comprises the grouping greater than in the described cell group, wherein M terminal is arranged, M 〉=1 in each described grouping coverage;
Described second dispensing unit is the pre-configured different carrier wave of different grouping and time slot;
Described access unit is used for being respectively the pre-configured carrier wave of described terminal distribution and time slot according to the grouping under the described terminal when having terminal to insert described residential quarter in the described residential quarter, makes described terminal insert described residential quarter according to the carrier wave and the time slot that distribute.
Further, described first dispensing unit is divided described grouping according to radio frequency remote unit RRU, and with grouping of a plurality of described RRU configurations, or with N grouping of a described RRU configuration, wherein the minimum value of N is 1, and maximum is the number of described RRU passage.
Further, described second dispensing unit specifically comprises at pre-configured different carrier wave and time slot:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
Further, described access unit specifically comprises: judging unit, search unit, allocation units and operating unit;
Described judging unit is used for judging the grouping of each terminal attaching respectively when having terminal to insert described residential quarter in the described residential quarter;
The described unit of searching is for pre-configured carrier wave and the time slot of grouping of searching described terminal attaching respectively;
Described allocation units are used for being respectively the described pre-configured carrier wave of described terminal distribution and time slot;
Described operating unit is used for described terminal and inserts described residential quarter according to carrier wave and the time slot that described allocation units distribute respectively.
(3) beneficial effect
The invention provides a kind of method and system that reduces area interference, be linked into pre-configured different carrier waves and time slot by the user priority that will belong to different grouping, make and produce the better space isolation between the user, effectively reduce area interference, promote the community user perception, improve network communication quality, the present invention is specific as follows than the advantage that prior art has:
(1) each passage can be formulated for a grouping, and each grouping can arrange different carrier waves and time slot.
(2) in the prior art, can not insert according to the carrier wave that sets in advance and time slot fully the regional user who stipulates, be easy to take place with carrier wave or with the time slot phenomenon; And the present invention can divide carrier wave and time slot according to the user attaching zone, and the user inserts according to pre-configured carrier wave and time slot.
(3) user is easy to generate co-channel interference for a long time in the prior art; And adopt the present invention can effectively suppress co-channel interference, and reduce area interference, thereby reducing overall network disturbs, ensure network quality.
(4) disturb very big to Cell Edge User in the prior art; And the application promotes cell capacity, improves user's perception, especially Cell Edge User perception;
When (5) carrying out identical networking in the prior art, for multi-carrier district, when the user inserted, carrier wave and time slot all were Random assignments, were easy to cause the user with the same time slot of carrier wave, namely were that small number of users also is easy to take place, and the area interference of generation is very serious; And the technical scheme that adopts the application to provide has very strong advantage to identical networking, grouping that can be corresponding according to floor, the carrier wave that predetermined set is different and time slot are avoided so as far as possible or are reduced with the probability of carrier wave with time slot, reach to reduce the purpose of disturbing or suppressing to disturb.
Description of drawings
Fig. 1 is the schematic diagram that BBU+RRU distributes in the prior art;
Fig. 2 is the work schematic diagram of distributing cell under two kinds of scenes in the prior art;
Fig. 3 is a kind of flow chart that reduces the method for area interference in the embodiment of the invention one;
Fig. 4 is the distribution schematic diagram of two groupings of RRU configuration during configuration packet in the embodiment of the invention one;
Fig. 5 is the flow chart of step S3 in the embodiment of the invention one;
Fig. 6 is according to the method for the present invention schematic diagram of working under two scenes in the embodiment of the invention one;
Fig. 7 is a kind of composition schematic diagram that reduces the system of area interference in the embodiment of the invention two.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment one
The embodiment of the invention one provides a kind of method that reduces area interference, and idiographic flow may further comprise the steps as shown in Figure 3:
Step S1, diverse geographic location in each residential quarter is divided, and according to the grouping of network planning demand allocating cell, comprised the grouping greater than in the cell group.
Wherein grouping is equivalent to portion, a common microzonation is divided into several groupings (portion) and is called cell group or residential quarter piecemeal (cellportion), cell group (cellportion) is made up of the grouping (portion) greater than, if having only a grouping (portion) just is common residential quarter, rather than cell group (cellportion).
M terminal arranged in the coverage of each grouping (portion), and M 〉=1, the terminal in this step is the user of each grouping of ownership (portion).
Cell group (cellportion) technology can realize that the orientation of indoor covering and exterior aerial covers, when being the different grouping of different geographic area configuration in the residential quarter, divide according to radio frequency remote unit RRU, with grouping of a plurality of RRU configurations, or with N grouping of a RRU configuration, wherein the minimum value of N is 1, and maximum is the number of active lanes of RRU, and the number of grouping is greater than 1.
Illustrate for the situation with N grouping of a RRU configuration: if RRU is four-way, then when configuration packet, can be configured to 1 grouping, or 2 groupings or 3 groupings, or 4 groupings.As 2 groupings of a RRU configuration of explanation among Fig. 4.
RRU is divided into single channel, binary channels, four-way or eight passages, the antenna of the corresponding RRU of each passage of RRU.Be to adopt a plurality of distributed single antenna for the indoor cell majority, just RRU is single pass, and therefore a RRU just disposes a grouping.
According to a plurality of groupings of network planning demand planning, a plurality of groupings are divided according to the residing different attributed regions of user side, and attributed region is to distribute or the housing-group distribution according to floor, each packet priority is set inserts different carrier wave and time slot.
When being configured carrier wave and time slot, the user side that same residential quarter is different or the user side of neighbor cell adjacent packets preferentially are linked in the different carrier waves or in the different time-gap of same carrier wave.
Step S2, be the pre-configured different carrier wave of different grouping and time slot.
Be carrier wave and the time slot of the best of each packet configuration, best carrier wave and time slot are exactly to be carrier wave and the time slot that carrier inserts carrying out preferentially selecting with it when the residential quarter is inserted.
Wherein pre-configured different carrier wave and time slot specifically comprise:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
The differentiation different grouping is to determine jointly according to the cell identification number (being residential quarter ID) of this residential quarter, grouping place and this packet identification number (being packet ID) that is grouped in the residential quarter, wherein cell identification number is the mark of sign different districts, and packet identification number is the uniquely tagged of different grouping in the identifying cells.
Step S3, when having terminal to insert the residential quarter in the residential quarter, be respectively the pre-configured carrier wave of terminal distribution and time slot according to the grouping under the terminal, make terminal insert the residential quarter according to the carrier wave that distributes and time slot.
Terminal in this step is the user under the residential quarter, will judge at first when namely inserting which grouping (portion) is this terminal (terminal in the residential quarter) belong to, and carries out the distribution of carrier wave and time slot according to the situation of grouping again.And the terminal among the step S1 is the terminal of certain grouping under the residential quarter, so the terminal of step S1 is the part of terminal among the step S3.
The idiographic flow of step S3 specifically may further comprise the steps as shown in Figure 5:
Step S31, when having terminal to insert the residential quarter in the residential quarter, judge the grouping of each terminal attaching respectively.Because what the present invention solved is exactly cell interference issues, when having a plurality of users to exist simultaneously under the residential quarter, area interference promotes easily, therefore will judge when a plurality of terminals insert the residential quarter which terminal attaching divide into groups in.
Step S32, search pre-configured carrier wave and the time slot of grouping of terminal attaching respectively.
Step S33, be respectively the pre-configured carrier wave of terminal distribution and time slot.
Step S34, terminal insert the residential quarter according to carrier wave and the time slot that step S33 distributes respectively.
Two kinds of typical indoor multichannel scenes have been designed in the present embodiment, scene 1 is to be divided into two buildings of A, B, scene 2 is the multi-stories at same seat high building, as shown in Figure 6, wherein F represents floor, and f represents frequency (frequency is exactly the numbering to fixed frequency), TS represents time slot, TS1 just represents the 1st time slot on this carrier wave, and TS3 just represents the 3rd time slot on this carrier wave, by that analogy.
Scene 1:A, grouping of each RRU configuration of Building B, each grouping sets in advance carrier wave and the time slot of access, can reduce or avoid co-channel interference like this.If RRU is single channel, then be RRU of each floor arrangement as can be seen from Figure, so grouping of RRU configuration is with configuration packet 1, the grouping 2 and divide into groups 3 respectively of the F1-F3 in the residential quarter, Building A 1.Also configuration packet 1, grouping 2 and divide into groups 3 respectively of the F1-F3 in the residential quarter, Building B 2 in like manner, also will be with the cell identification that goes up each grouping place number in order to distinguish the identical grouping of numbering, the grouping that is the F1 in the residential quarter 1 is " residential quarter 1 grouping 1 ", and the grouping of the F1 in the residential quarter 2 is exactly " residential quarter 2 groupings 1 ".In this way different groupings is made a distinction.
Scene 2: the different floors in the high building, F1-F3 is formulated for residential quarter 2, F4-F6 is formulated for residential quarter 1.The differentiation mode of grouping is with scene 1 in the scene 2, difference just be in the scene 2 be in the same seat building adjacent several floors in a residential quarter.
As shown in Figure 6: the user priority access carrier f1(TS1/TS5 in F1 building, Building A), the user priority access carrier f2(TS2/TS4 in F2 building), the user priority access carrier f3(TS2/TS4 in F1 building, Building B), can avoid neighboring user to be linked in same carrier wave or the same time slot like this, thereby can reduce area interference greatly.When a plurality of terminals insert the residential quarter, then judge the grouping that arranges, guarantee to belong to the user of same residential quarter different grouping or the user of neighbor cell adjacent packets, preferential carrier wave and the time slot that arranges that insert, reduce inter-user interference and presence of intercell interference as far as possible, promote user's perception.
Said method is not only applicable to co-frequency cell, no matter is co-frequency cell or alien-frequency district, can reduce or suppress to disturb.
As can be seen from the above embodiments, the present invention preferentially is linked into pre-configured different carrier waves and time slot by the user terminal that will belong to different grouping, makes to produce the better space isolation between the user, effectively reduces area interference, promote the community user perception, improve network communication quality.
Embodiment two
The embodiment of the invention two provides a kind of system that reduces area interference, forms schematic diagram as shown in Figure 7, specifically comprises:
First dispensing unit 710, second dispensing unit 720 and access unit 730.
First dispensing unit 710 is divided diverse geographic location in each residential quarter, and according to the grouping of network planning demand allocating cell, comprises the grouping greater than in the cell group, wherein M terminal is arranged, M 〉=1 in each grouping coverage.
First dispensing unit 710 is divided grouping according to radio frequency remote unit RRU, and with grouping of a plurality of RRU configurations, or with N grouping of a RRU configuration, wherein the minimum value of N is 1, and maximum is the number of RRU passage, and the number of grouping is greater than 1.
Second dispensing unit 720 is the pre-configured different carrier wave of different grouping and time slot.
Specifically comprise at pre-configured different carrier wave and time slot:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
Access unit 730 is used for being respectively the pre-configured carrier wave of terminal distribution and time slot according to the grouping under the terminal when having terminal to insert the residential quarter in the residential quarter, makes terminal insert the residential quarter according to the carrier wave that distributes and time slot.
Access unit 730 specifically comprises: judging unit 731, search unit 732, allocation units 733 and operating unit 734.
Judging unit 731 is used for judging the grouping of each terminal attaching respectively when having terminal to insert the residential quarter in the residential quarter.
Search pre-configured carrier wave and the time slot of grouping that unit 732 is used for searching respectively terminal attaching.
Allocation units 733 are used for being respectively the pre-configured carrier wave of terminal distribution and time slot.
Operating unit 734 is used for terminal and inserts the residential quarter according to carrier wave and the time slot that allocation units distribute respectively.
As can be seen from the above embodiments, the present invention preferentially is linked into pre-configured different carrier waves and time slot by the user terminal that will belong to different grouping, makes to produce the better space isolation between the user, effectively reduces area interference, promote the community user perception, improve network communication quality.
Above execution mode only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a method that reduces area interference is characterized in that, said method comprising the steps of:
S1, diverse geographic location in each residential quarter is divided, and according to the grouping of network planning demand allocating cell, comprised the grouping greater than in the described cell group, wherein M terminal arranged, M 〉=1 in each described grouping coverage;
S2, be the pre-configured different carrier wave of different grouping and time slot;
S3, when having terminal to insert described residential quarter in the described residential quarter, be respectively the pre-configured carrier wave of described terminal distribution and time slot according to the grouping under the described terminal, make described terminal insert described residential quarter according to the carrier wave and the time slot that distribute.
2. the method for claim 1 is characterized in that, described step S1 specifically comprises:
Divide described grouping according to radio frequency remote unit RRU, with grouping of a plurality of described RRU configurations, or with N grouping of a described RRU configuration, wherein the minimum value of N is 1, and maximum is the number of active lanes of described RRU.
3. method as claimed in claim 2 is characterized in that, described RRU is divided into single channel, binary channels, four-way or eight passages, the antenna of the corresponding described RRU of each passage of described RRU.
4. the method for claim 1 is characterized in that, pre-configured different carrier wave and time slot specifically comprise among the described step S2:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
5. the method for claim 1, it is characterized in that, distinguish different grouping among the described step S2 and be according to the cell identification of residential quarter, described grouping place number and described packet identification number common decision that is grouped in the described residential quarter, wherein said cell identification number is the mark of sign different districts, and described packet identification number is the uniquely tagged of different grouping in the identifying cells.
6. the method for claim 1 is characterized in that, described step S3 specifically comprises:
S31, when having terminal to insert described residential quarter in the described residential quarter, judge the grouping of each terminal attaching respectively;
S32, search pre-configured carrier wave and the time slot of grouping of described terminal attaching respectively;
S33, be respectively the described pre-configured carrier wave of described terminal distribution and time slot;
S34, described terminal insert described residential quarter according to carrier wave and the time slot that step S33 distributes respectively.
7. a system that reduces area interference is characterized in that, described system comprises: first dispensing unit, second dispensing unit and access unit;
Described first dispensing unit is divided diverse geographic location in each residential quarter, and according to the grouping of network planning demand allocating cell, comprises the grouping greater than in the described cell group, wherein M terminal is arranged, M 〉=1 in each described grouping coverage;
Described second dispensing unit is the pre-configured different carrier wave of different grouping and time slot;
Described access unit is used for being respectively the pre-configured carrier wave of described terminal distribution and time slot according to the grouping under the described terminal when having terminal to insert described residential quarter in the described residential quarter, makes described terminal insert described residential quarter according to the carrier wave and the time slot that distribute.
8. system as claimed in claim 7, it is characterized in that, described first dispensing unit is divided described grouping according to radio frequency remote unit RRU, with grouping of a plurality of described RRU configurations, or with N grouping of a described RRU configuration, wherein the minimum value of N is 1, and maximum is the number of described RRU passage.
9. system as claimed in claim 7 is characterized in that, described second dispensing unit specifically comprises at pre-configured different carrier wave and time slot:
For same residential quarter belongs to the different carrier wave of the terminal distribution of different grouping or the different time-gap of same carrier wave
Perhaps, be the different carrier wave of the terminal distribution that is in the neighbor cell adjacent packets or the different time-gap of same carrier wave.
10. system as claimed in claim 7 is characterized in that, described access unit specifically comprises: judging unit, search unit, allocation units and operating unit;
Described judging unit is used for judging the grouping of each terminal attaching respectively when having terminal to insert described residential quarter in the described residential quarter;
The described unit of searching is for pre-configured carrier wave and the time slot of grouping of searching described terminal attaching respectively;
Described allocation units are used for being respectively the described pre-configured carrier wave of described terminal distribution and time slot;
Described operating unit is used for described terminal and inserts described residential quarter according to carrier wave and the time slot that described allocation units distribute respectively.
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| WO2017161900A1 (en) * | 2016-03-21 | 2017-09-28 | 中兴通讯股份有限公司 | Data transmission method and base station |
| CN109672989A (en) * | 2018-12-26 | 2019-04-23 | 中国联合网络通信集团有限公司 | Indoor distributed system |
| CN110290533A (en) * | 2019-06-24 | 2019-09-27 | 京信通信系统（中国）有限公司 | Data transmission method, system, computer equipment and storage medium |
| WO2020258735A1 (en) * | 2019-06-24 | 2020-12-30 | 京信通信技术(广州)有限公司 | Data transmission method, system, computer device, and storage medium |
| CN110290533B (en) * | 2019-06-24 | 2021-09-24 | 京信网络系统股份有限公司 | Data transmission method, system, computer device and storage medium |
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