CN101291158B - Baseband system, base station and processing method supporting softer switch - Google Patents
Baseband system, base station and processing method supporting softer switch Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
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Abstract
The invention relates to a base band system, a base station and a processing method supporting softer handoff. The base band system comprises: at least one base band processing and controlling unit and a plurality of distributed base band units which are connected with the endmost base band processing and controlling unit through an RF interface of the distributed base band, wherein the distributed base band units are used for demodulating the signals transmitted by corresponding RF units and transmitting demodulated data to the base band processing and controlling unit through the RF interface of the distributed base band; the base band processing and controlling unit is used for decoding data demodulated by the distributed base band. The base band system, the base station and the processing method supporting softer handoff can decrease data quantity needed to be transmitted during softer handoff.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to the technical scheme of supporting More Soft Handoff.
Background technology
In wireless communication system; More Soft Handoff (Softer Handover) is meant: the switching that travelling carriage carries out between a plurality of sectors of a base station (NodeB) covering, travelling carriage remains on the link of two or more sectors of a base station simultaneously with same frequency when More Soft Handoff.The signal that travelling carriage sends when promptly carrying out More Soft Handoff can be received that also this moment, travelling carriage and base station can pass to few two different air interface channel communications (each sector has at least) simultaneously by the radio frequency unit of adjacent sectors.The base station focuses on this mobile station signal after receiving this mobile station signal through the radio frequency unit of each sector, and the signal after these processing is merged with the raising receiving gain, thereby guarantees communication quality.Fig. 1 is the architecture of base station sketch map of existing WCDMA system, and among Fig. 1, the base station mainly is made up of radio frequency unit, Base Band Unit, transmission unit; Wherein, radio frequency unit separates with Base Band Unit, and is connected with the Base Band Unit of far-end through the base band radio frequency interface.Concrete, radio frequency unit is used to receive and dispatch communication data, and carries out data interaction with Base Band Unit; Base Band Unit is used for upstream data, downlink data are handled, and comprises that data are carried out encoding and decoding to be handled; Transmission unit is used for and the miscellaneous equipment interaction data, and the data of for example sending after Base Band Unit is handled are given radio network controller (RNC) and received related data from RNC.
The process of existing Base Band Unit deal with data when More Soft Handoff is as shown in Figure 2.Among Fig. 2, the radio frequency unit of the radio frequency unit of Sector1 sector and Sector2 sector is transferred to Base Band Unit through the base band radio frequency interface with this signal respectively after receiving the same signal of same travelling carriage transmission respectively; Base Band Unit carries out the despreading first time (diagram 21 and 21 ') to the above-mentioned two paths of signals of each radio frequency unit transmission respectively; To reduce buffer data size; Then respectively the data after the despreading first time are carried out channel compensation (diagram 22 and 22 '); To eliminate the influence of channel fading to signal; Merge (being that high specific merges, diagram 23) to two-way with the restoring signal energy through the signal data weighting of channel compensation then, and the signal after according to transformat combination indication TFCI this weighting being merged carries out the 2nd despreading (diagram 24) to accomplish the demodulation to data; Then the data after the 2nd despreading are quantized (diagram 25); To reduce the bit number of transmission; Reduce the requirement of docking port and hardware, the data after will quantizing are at last sent into decoder and are decoded (diagram 26), so that the user data after the decoding processing is sent to RNC.
The inventor finds to exist at least in the prior art following problem in realizing creation process of the present invention:
Bandwidth to the base band radio frequency interface in existing WCDMA system has very high requirement; For example a 5M carrier frequency just needs the bandwidth more than the 200M when uplink; When the base station is a plurality of travelling carriages when carrying out More Soft Handoff simultaneously, a plurality of radio frequency units will transmit corresponding multiple signals to Base Band Unit through the base band radio frequency interface, and this requires the base band radio frequency interface of base station must have high bandwidth to support More Soft Handoff; And the complexity of high bandwidth base station system is very high, and cost is also very high.
Summary of the invention
Embodiments of the invention provide the processing method of a kind of baseband system, base station and support More Soft Handoff, can when More Soft Handoff, minimizing need data quantity transmitted, also can reduce the base station product cost accordingly.
A kind of baseband system comprises: at least one Base-Band Processing control unit, and a plurality of distributed Base Band Unit that is connected with the said Base-Band Processing control unit of far-end through distributed base band radio frequency interface;
Said distributed Base Band Unit: be used for the signal of respective rf unit transmission is carried out demodulation process, and through the transfer of data of said distributed base band radio frequency interface after with demodulation process to said Base-Band Processing control unit;
Said Base-Band Processing control unit is used for the data after the said distributed Base Band Unit demodulation process are carried out decoding processing.
A kind of base station comprises a plurality of radio frequency units, also comprises above-mentioned baseband system.
A kind of processing method of supporting More Soft Handoff comprises:
Each distributed Base Band Unit carries out demodulation process to the signal data of respective rf unit transmission, and through the Base-Band Processing control unit of the transfer of data of distributed base band radio frequency interface after with demodulation process to far-end;
The data of said Base-Band Processing control unit after to said distributed Base Band Unit demodulation process are carried out decoding processing.
The technical scheme that embodiments of the invention provide can be found out; Because baseband system has been divided into two parts: at least one Base-Band Processing control unit and a plurality of distributed Base Band Unit; The terminal signaling that makes distributed Base Band Unit independently to receive the respective rf unit carries out demodulation process; The Base-Band Processing control unit is then concentrated the data after the demodulation process is carried out decoding processing, for example during More Soft Handoff with the same signal in the data after each distributed Base Band Unit demodulation process from same travelling carriage merge, decoding.This makes the base band demodulating of each sector handle separate; Make that also base station architecture is more flexible; For example can the distributed Base Band Unit of each sector be integrated in the radio frequency unit of sector, place; Thereby the data traffic of base station when having reduced deal with data has also reduced the requirement to interface between radio frequency unit and the Base Band Unit, also greatly reduces the complexity of base station system accordingly.
Description of drawings
Fig. 1 is the architecture of base station sketch map of background technology;
Fig. 2 is the Base Band Unit handling principle sketch map of background technology;
The baseband system structural representation that Fig. 3 provides for the embodiment of the invention;
The demodulation process principle schematic that Fig. 4 provides for the embodiment of the invention;
The baseband system that Fig. 5 provides for the embodiment of the invention is supported the handling principle sketch map of More Soft Handoff;
Fig. 6 is the architecture of base station sketch map that the embodiment of the invention provides;
The process flow figure of the support More Soft Handoff that Fig. 7 provides for the embodiment of the invention.
Embodiment
In embodiments of the present invention; A kind of baseband system is provided; Concrete implementation structure is as shown in Figure 3; Can comprise: at least one Base-Band Processing control unit 31, and a plurality of distributed Base Band Unit that is connected with the said Base-Band Processing control unit of far-end through distributed base band radio frequency interface, as 32 and 33 etc.; Wherein,
Distributed Base Band Unit for example 32: be used for the signal of radio frequency unit transmission is carried out demodulation process, and the data after the demodulation process are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Concrete; Demodulation process can comprise: to carrying out channel compensation after the despreading for the first time of said signal data; Carry out despreading second time according to the data of transformat combination indication TFCI after, and the data after the said despreading second time are carried out high specific merge and quantification said channel compensation;
For example, in a plurality of sectors that a base station covers, each sector can be placed with at least one radio frequency unit and a distributed Base Band Unit; When a travelling carriage moves to the overlapping region covered in a plurality of sectors when carrying out More Soft Handoff; The radio frequency unit of above-mentioned a plurality of sectors all can be received the same signal that this travelling carriage sends; At this moment, the radio frequency unit of above-mentioned each sector just is transferred to this mobile station signal the distributed Base Band Unit of self sector; The distributed Base Band Unit of each sector carries out demodulation process to this mobile station signal respectively; The demodulation process principle is as shown in Figure 4, can comprise: the signal data that the radio frequency unit that belongs to the sector is transmitted carries out the despreading first time 41, to reduce buffer data size; Then the data after the despreading first time are carried out channel compensation 42; To eliminate the influence of channel fading, carry out despreading second time 43 according to the data of transformat combination indication TFCI after again, with the demodulation of realization to data to channel compensation to signal; Then the data after the despreading second time are carried out high specific and merge 44; Be that multipath reception merges with the restoring signal energy, the data after then high specific being merged quantize 45, to reduce the bit number of transmission; Transfer of data after distributed then Base Band Unit will quantize through distributed base band radio frequency interface is given Base-Band Processing control unit 31;
Base-Band Processing control unit 31 is used for the data after the said distributed Base Band Unit demodulation process are carried out decoding processing, and specifically can comprise: the data to after the distributed Base Band Unit demodulation process are decoded; Perhaps the same signal data from same travelling carriage in the data after each said distributed Base Band Unit demodulation process is merged, and to the data decode after this merging;
For example; After the data of distributed Base Band Unit in each sector that the base station covers after with demodulation process are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Merge from the same signal data of same travelling carriage in the data of Base-Band Processing control unit after that (data of same signal also can be called soft value during More Soft Handoff with each distributed Base Band Unit demodulation process; Just merge the soft value of each adjacent sectors this moment); Send into decoder then and decode, then decoded data are carried out subsequent treatment.
Technical scheme by the embodiment of the invention described above provides can find out that the function that the baseband system that the embodiment of the invention provides is realized has comprised the function that the Base Band Unit of base station is realized in the background technology.Terminal in the embodiment of the invention comprises travelling carriage.
Can find out from foregoing description; Distributed base band radio frequency interface in the embodiment of the invention is the interface that Base-Band Processing control unit 31 is connected with distributed Base Band Unit 32 communications; Because this interface mainly transmits the data traffic after distributed Base Band Unit 32 demodulation process; Therefore the transmission quantity of this interface is a lot of less than the transmission quantity of the base band radio frequency interface in the background technology; That is to say that it is high to the requirement of base band radio frequency interface in the background technology in the embodiment of the invention requirement of distributed base band radio frequency interface to be far from.And; In the embodiment of the invention; Carry out owing to the data demodulates processing links is arranged in the distributed Base Band Unit, make that (rather than together a plurality of signal data high specifics being merged in the picture background technology) can be independently accomplished in merging by each distributed Base Band Unit to the signal data high specific.
Can find out; Because the More Soft Handoff function of WCDMA system needs Base Band Unit to carry out softer merging to the signal from two or more sectors, the baseband signal with different sectors of background technology focuses on the complexity of Base-Band Processing and base station is improved greatly; And in embodiments of the present invention; Distributed treatment is taked in demodulation to data; More Soft Handoff merging and decoding to data are taked to focus on, thereby can reduce the data volume between base station radio-frequency unit and the Base Band Unit, have also greatly reduced the complexity of base station.
In concrete the application, the distributed Base Band Unit of each sector can be integrated in one with the radio frequency unit of sector, place or be arranged in the same equipment.
Can find out from foregoing description; The baseband system of the embodiment of the invention comprises distributed demodulation process part (a plurality of distributed Base Band Unit) and concentrated decoded portion (at least one Base-Band Processing control unit); Realized distributed treatment is taked in the demodulation of data; And to the decoding of data, or More Soft Handoff merges and decoding is then taked to focus on, thus realize reducing to the interface requirement between radio frequency unit and the Base Band Unit; Be the requirement that low-speed interface just can satisfy Base Band Unit and radio frequency unit interface, and need not be as needing the interface between radio frequency unit and the Base Band Unit to have high bandwidth to support transfer of data in the background technology.That is to say; In embodiments of the present invention; Can distributed Base Band Unit be separated from base station body; Transfer in each sector that the base station covers (for example, the radio frequency unit of the distributed Base Band Unit of each sector and sector, place is integrated in one or is arranged in the same equipment), distributed Base Band Unit is connected with the Base-Band Processing control unit is long-range through distributed base band radio frequency interface; When distributed Base Band Unit is given the Base-Band Processing control unit of far-end through the transfer of data of distributed base band radio frequency interface after with demodulation process, just need be as the digital antenna data of a large amount of high bandwidth of transmission in the background technology to the base station main equipment.Therefore, the embodiment of the invention also can realize reducing greatly between radio frequency unit and the Base Band Unit needing data quantity transmitted.Can baseband system be split in radio frequency unit and the transmission unit through the embodiment of the invention simultaneously, make the base station product can become the combination of radio frequency unit and transmission unit, such configuration can make the network capacity extension convenient more.
Fig. 5 is the handling principle sketch map that the baseband system that provides of the embodiment of the invention is supported More Soft Handoff, below in conjunction with Fig. 5 the embodiment of the invention is described in detail.Comprise among Fig. 5: distributed Base Band Unit # 1 and distributed Base Band Unit # 2, and Base-Band Processing control unit; For example; When travelling carriage is in the overlapping region of sector 1 and sector 2; The radio frequency unit of the radio frequency unit of sector 1 and adjacent sector 2 has all been received the same signal of this travelling carriage; The distributed Base Band Unit # 1 of sector 1 just begins to carry out demodulation process after receiving this mobile station signal of radio frequency unit transmission, and meanwhile, the distributed Base Band Unit # 2 of sector 2 also begins this mobile station signal is carried out demodulation process;
The distributed Base Band Unit # 1 of sector 1 comprises the demodulation process of this mobile station signal: this signal data is carried out the despreading first time 51; To reduce buffer data size; Then the data after the despreading first time are carried out channel compensation 52,, carry out the despreading second time 53 according to the data of transformat combination indication TFCI after again channel compensation to eliminate the influence of channel fading to signal; To realize demodulation to data; Then the data after the despreading second time are carried out high specific and merge 54, with the restoring signal energy, the data after then high specific being merged quantize 55; To reduce the bit number of transmission, the data after then will quantizing are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Because distributed Base Band Unit # 2 is identical with the handling principle of above-mentioned distributed Base Band Unit # 1 to the demodulation process (illustrating with 51 '～55 ' among the figure) of this mobile station signal, no longer repeats at this;
After the Base-Band Processing control unit is received the data after distributed Base Band Unit # 1 and the distributed Base Band Unit # 2 demodulation process respectively; With wherein merging from the data of the same signal at same terminal; In other words; The same user's who just each sector is received same signal data merges 56, and wherein, the data of same signal also can be called soft value when this More Soft Handoff; After the soft value with each sector merges, the be improved signal of gain, the data after then will merging are sent into decoder and are decoded 57, carry out subsequent treatment 58 then.
Can find out from foregoing description; The embodiment of the invention is when carrying out More Soft Handoff; By distributed Base Band Unit the signal that radio frequency unit transmits is carried out demodulation process; The Base-Band Processing control unit is then concentrated the data after the demodulation process is carried out decoding processing, just can realize through the distributed base band radio frequency interface of the interface of low speed when making distributed Base Band Unit transmission data give the Base-Band Processing control unit, and needn't be as background technology docking port the requirement of high-transmission bandwidth is arranged.Certainly, the embodiment of the invention can also be applied to other data processing except supporting More Soft Handoff.When carrying out other data processing; The Base-Band Processing control unit can carry out decoding processing to the data after each distributed Base Band Unit demodulation process as the case may be; Thereby realize distributed treatment, the data decode after the demodulation process is then taked to focus on demodulation.
The embodiment of the invention also provides a kind of base station, comprises a plurality of radio frequency units, transmission unit, and above-mentioned baseband system.Wherein, the distributed Base Band Unit of each in the baseband system can be integrated in one with corresponding said radio frequency unit, or is arranged in the same equipment.Concrete, the implementation structure of this base station can be as shown in Figure 6, comprising: a plurality ofly be integrated in one or be arranged at distributed Base Band Unit and the respective rf unit in the same equipment, and for example 61, Base-Band Processing control unit 62, transmission unit 63.Wherein, be integrated in one or be arranged at distributed Base Band Unit and the respective rf unit in the same equipment, for example 61, be connected through distributed base band radio frequency interface with the Base-Band Processing control unit 62 of far-end;
Be integrated in one or be arranged in the distributed Base Band Unit and respective rf unit 61 in the same equipment, radio frequency unit is used to receive and dispatch communication data; Distributed Base Band Unit wherein is used for the signal of corresponding radio frequency unit transmission is carried out demodulation process, and the data after the demodulation process are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Said demodulation process specifically can comprise: to carrying out channel compensation after the despreading for the first time of said signal data; Decode and despreading for the second time according to the data of transformat combination indication TFCI after, and the data after the said despreading second time are carried out high specific merge and quantize said channel compensation;
Base-Band Processing control unit 62 is used for the data after the said distributed Base Band Unit demodulation process are carried out decoding processing; Specifically can comprise: the data to after the said distributed Base Band Unit demodulation are decoded; Perhaps the same signal data from same terminal in the data after the said distributed Base Band Unit demodulation is merged, and to the data decode after this merging;
Baseband system that the invention described above embodiment provides and base station can be applied to More Soft Handoff, but are not limited to be applied to More Soft Handoff.
The embodiment of the invention also provides corresponding a kind of processing method of supporting More Soft Handoff; Specifically can baseband system be separated at least one Base-Band Processing control unit, and a plurality of distributed Base Band Unit that is connected with the said Base-Band Processing control unit of far-end through distributed base band radio frequency interface; Said distributed Base Band Unit carries out demodulation process to the signal data of respective rf unit transmission, and the data after the demodulation process are transferred to said Base-Band Processing control unit through distributed base band radio frequency interface; The data of said Base-Band Processing control unit after to said distributed Base Band Unit demodulation process are carried out decoding processing.
Wherein, said distributed Base Band Unit can be integrated in one with the respective rf unit or be arranged in the same equipment; And the distributed base band radio frequency interface between said distributed Base Band Unit and the said Base-Band Processing control unit can be a low-speed interface.
For ease of understanding, will combine accompanying drawing that the concrete implementation of the embodiment of the invention is carried out detailed description below to the embodiment of the invention.
Fig. 7 is the process flow figure of the support More Soft Handoff that provides of the embodiment of the invention, and as shown in Figure 7, processing method comprises the steps:
Step 71: each distributed Base Band Unit carries out demodulation process to the signal data of respective rf unit transmission; Concrete; Said demodulation process can comprise: carry out channel compensation after the signal data despreading for the first time to the transmission of respective rf unit; Carry out despreading second time according to the data of transformat combination indication TFCI after, and the data after the said despreading second time are carried out high specific merge and quantification said channel compensation;
For example, in a plurality of sectors that base station covers, each sector all is placed with at least one radio frequency unit and a distributed Base Band Unit, and the radio frequency unit of each sector and distributed Base Band Unit are integrated; When a travelling carriage moves to the overlapping region covered in a plurality of sectors; The radio frequency unit of above-mentioned a plurality of sectors all can be received the same signal that this travelling carriage sends; At this moment, the radio frequency unit of above-mentioned a plurality of sectors just is transferred to this mobile station signal the distributed Base Band Unit of self sector; The distributed Base Band Unit of each sector carries out demodulation process to this mobile station signal respectively, and the demodulation process principle is as shown in Figure 4, no longer repeats here;
Step 72: the data of each distributed Base Band Unit after with demodulation process are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Distributed Base Band Unit can be through low speed the signal data of distributed base band radio frequency interface after with demodulation process be transferred to the Base-Band Processing control unit;
Step 73: the data of Base-Band Processing control unit after to distributed Base Band Unit demodulation process are carried out decoding processing; Specifically can comprise: to the data decode after each distributed Base Band Unit demodulation process; Perhaps the same signal data from same travelling carriage merges in the data of Base-Band Processing control unit after with each distributed Base Band Unit demodulation process, and the data decode after this is merged;
For example; After the data of distributed Base Band Unit in each sector that the base station covers after with demodulation process are transferred to the Base-Band Processing control unit through distributed base band radio frequency interface; Same signal data from same terminal in the data of Base-Band Processing control unit after with each distributed Base Band Unit demodulation process merges (just the soft value with adjacent sectors merges); Send into decoder then and decode, so that give RNC decoded transfer of data.
In the practical application, each distributed Base Band Unit and respective rf unit can be integrated in one, or are arranged in the same equipment; That is to say that the distributed base band subelement of each sector and the radio frequency unit of same sector can be integrated in one or be arranged in the same equipment.
Can find out from foregoing description; The embodiment of the invention has been divided into Base Band Unit distributed demodulation process part (a plurality of distributed Base Band Unit) and has focused on part (at least one Base-Band Processing control unit); Realized distributed treatment is taked in the demodulation of data; And the More Soft Handoff merging and the decoding of data are taked to focus on, thereby realize reducing interface requirement to radio frequency unit and Base Band Unit, promptly low-speed interface just can satisfy the requirement of base band radio frequency interface.
In sum; Compare in various embodiments of the present invention and the prior art; Because the embodiment of the invention is when carrying out More Soft Handoff; By distributed Base Band Unit the signal that radio frequency unit transmits is carried out demodulation process; The Base-Band Processing control unit is then concentrated the data after the demodulation process are decoded and is waited processing, just can realize through the distributed base band radio frequency interface of low speed when making distributed Base Band Unit transmission data to the Base-Band Processing control unit of far-end, and needn't be as background technology the base band radio frequency interface between radio frequency unit and the Base Band Unit be had the requirement of high-transmission bandwidth.Therefore, data quantity transmitted when embodiment of the present invention can reduce the base station More Soft Handoff has also greatly reduced the complexity of base station.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a baseband system is characterized in that, comprising:
At least one Base-Band Processing control unit, and a plurality of distributed Base Band Unit that is connected with the said Base-Band Processing control unit of far-end through distributed base band radio frequency interface;
Said distributed Base Band Unit: be used for the signal of respective rf unit transmission is carried out demodulation process, and through the transfer of data of said distributed base band radio frequency interface after with demodulation process to said Base-Band Processing control unit;
Said Base-Band Processing control unit is used for the data after the said distributed Base Band Unit demodulation process are carried out decoding processing.
2. system according to claim 1; It is characterized in that; When the signal that said distributed Base Band Unit transmits the respective rf unit carries out demodulation process; Specifically be used for: to carrying out channel compensation after the despreading for the first time of said signal, carry out despreading second time, and the data after the said despreading second time are carried out high specific merge and quantification according to the data of transformat combination indication TFCI after to said channel compensation.
3. system according to claim 1; It is characterized in that; When the data of said Base-Band Processing control unit after to said distributed Base Band Unit demodulation process were carried out decoding processing, specifically be used for: the data to after the said distributed Base Band Unit demodulation process were decoded; Perhaps the same signal data from same terminal in the data after the said distributed Base Band Unit demodulation process is merged, and to the data decode after this merging.
4. system according to claim 1 is characterized in that, said distributed Base Band Unit and said respective rf unit are integrated in one, or are arranged in the same equipment.
5. a base station comprises a plurality of radio frequency units, it is characterized in that, said base station also comprises each described baseband system of claim 1 to 4.
6. base station according to claim 5 is characterized in that, distributed Base Band Unit in the said baseband system and corresponding said radio frequency unit are integrated in one, or are arranged in the same equipment.
7. a processing method of supporting More Soft Handoff is characterized in that, comprising:
In a plurality of sectors that a base station covers; At least one radio frequency unit and a distributed Base Band Unit are placed in each sector; The distributed Base Band Unit of each sector carries out demodulation process to the signal data of respective rf unit transmission, and through the Base-Band Processing control unit of the transfer of data of distributed base band radio frequency interface after with demodulation process to far-end;
The data of said Base-Band Processing control unit after to the distributed Base Band Unit demodulation process of said each sector are carried out decoding processing.
8. method according to claim 7; It is characterized in that; Said demodulation process; Comprise: to carrying out channel compensation after the despreading for the first time of said signal data, carry out despreading second time, and the data after the said despreading second time are carried out high specific merge and quantification according to the data of transformat combination indication TFCI after to said channel compensation.
9. method according to claim 7; It is characterized in that; The data of said Base-Band Processing control unit after to the distributed Base Band Unit demodulation process of said each sector are carried out decoding processing; Comprise: the same signal data from same terminal in the data after the distributed Base Band Unit demodulation process of said each sector is merged, and to the data decode after this merging.
10. method according to claim 7 is characterized in that, each distributed Base Band Unit and respective rf unit are integrated in one, or are arranged in the same equipment.
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| CN200810113235.6A CN101291158B (en) | 2008-05-28 | 2008-05-28 | Baseband system, base station and processing method supporting softer switch |
| PCT/CN2009/071905 WO2009143752A1 (en) | 2008-05-28 | 2009-05-21 | A baseband system, a base station and a processing method for supporting the softer handover |
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| CN101291158B (en) * | 2008-05-28 | 2012-07-04 | 华为技术有限公司 | Baseband system, base station and processing method supporting softer switch |
| CN102405612B (en) * | 2011-06-28 | 2014-07-09 | 华为技术有限公司 | Method and base station for obtaining combined gains |
| CN104662956B (en) * | 2013-09-25 | 2018-10-19 | 华为技术有限公司 | Band processing system, method for processing baseband signal and base station |
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|---|---|---|---|---|
| KR100943600B1 (en) * | 2005-06-10 | 2010-02-24 | 삼성전자주식회사 | Uplink transmission method in handoff |
| CN101291158B (en) * | 2008-05-28 | 2012-07-04 | 华为技术有限公司 | Baseband system, base station and processing method supporting softer switch |
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2008
- 2008-05-28 CN CN200810113235.6A patent/CN101291158B/en active Active
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2009
- 2009-05-21 WO PCT/CN2009/071905 patent/WO2009143752A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671238A (en) * | 2004-03-17 | 2005-09-21 | 华为技术有限公司 | A wireless access network system and method realizing softer switch |
| CN1819676A (en) * | 2005-03-11 | 2006-08-16 | 华为技术有限公司 | Indoor base station system |
| CN101102606A (en) * | 2007-07-20 | 2008-01-09 | 中兴通讯股份有限公司 | An indoor distributed system for supporting real time network optimization and its implementation method |
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| Publication number | Publication date |
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| CN101291158A (en) | 2008-10-22 |
| WO2009143752A1 (en) | 2009-12-03 |
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