CN101374005B - Method for transmitting down user data and distributed antennae mobile communication system - Google Patents
Method for transmitting down user data and distributed antennae mobile communication system Download PDFInfo
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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Abstract
The invention discloses a method for transmitting downlink user data, which is used in a distributed antenna mobile communication system. The method comprises the steps of collecting all antenna signals; determining corresponding effective antennae carrying effective information of users; and allocating the downlink data of the users to the determined corresponding effective antennae and transmitting to the users. The method provided in the embodiment of the invention can effectively reduce interference among user data when transmitting downlink user data, and increase the antenna power allocated to the users from the down link.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method for transmitting down user data and corresponding distributed antenna mobile communication system.
Background technology
In recent ten years, Mobile Communication Development is rapid, moves on available radio spectrum resources is continuous, and the decay of wireless signal is more serious, and radius of society constantly dwindles.Constantly dwindling of radius of society means that base station density increases, the cost up of networking.Simultaneously, handover causes the air resource waste frequently, and therefore spectrum efficiency also reduces.
Traditional antenna system is placed a plurality of antennas at the base station end, also places a plurality of antennas at travelling carriage, forms communication link between base station and travelling carriage, and the base station communicates by the travelling carriage with a plurality of antennas in aerial array and residential quarter.From the angle of system configuration, such system compares with traditional single-input single-output cellular communication system does not have basic difference.Although traditional antenna system can overcome the channel path loss that large scale declines and shadow fading causes, can form good system in the residential quarter covers, solve the communication dead angle in the residential quarter, improve telecommunication service quality, but due to the distance between a plurality of antennas of base station in traditional antenna system and wavelength difference apart from little, therefore has correlation between each antenna, therefore can arrive according to angle (Arrival of An-gle, AOA) measurement and positioning mode obtains the accurate angle of each antenna.
In distributed antenna mobile communication system, have in each cell range a plurality of at a distance of much larger than carrier wavelength, the wireless signal processing unit of the simple functions such as power amplifier, LAN frequency conversion and Signal Pretreatment only arranged, each wireless signal processing unit comprises one or more antenna, these wireless signal processing units only need the sending and receiving function of settling signal and the simple preliminary treatment of signal, and be connected with core processing unit by optical fiber, coaxial cable or microwave wireless channel, in core processing unit settling signal processing capacity.Such system configuration has not only possessed the advantage of traditional antenna system, has reduced path loss, has overcome shadow effect, has also significantly improved channel capacity by the MIMO technology simultaneously.Compare with traditional antenna system, distance in distributed antenna mobile communication system between the wireless signal processing unit is greater than carrier wavelength, therefore the channel fading that forms between different base station antenna and travelling carriage can be regarded as fully uncorrelated, and channel capacity is larger.
But, due to uncorrelated between each antenna for base station in distributed antenna mobile communication system, therefore the communication environment that faces of distributed antenna mobile communication system is different from the communication environment under traditional antenna system, wave beam forming in traditional antenna system and AOA measurement and positioning mode no longer are applicable to distributed antenna mobile communication system, in addition, dynamic channel allocation under traditional antenna system (DynamicalChannel Allocation, DCA) method also no longer is applicable to distributed antenna mobile communication system.
in existing distributed antenna mobile communication system, generally to launch simultaneously identical down link signal by each residential quarter on all wireless signal processing units, in addition, uplink signal is received and is sent to core processing unit by wireless signal processing units all in the residential quarter, as seen, in existing distributed antenna mobile communication system, the uplink receiving of data flow is processed almost constant, and in multiaerial system, certain user's effective information generally just is carried on a few antennas, if therefore do not carry this user's effective information on certain transmit antennas, the data on this antenna that receiving terminal receives are noises with respect to this user profile.At present also there is no special effective method for the distribution method of data flow on a plurality of aerial arrays, the method for transmitting down user data in existing distributed antenna mobile communication system is an important directions of wireless communication technology personnel research always.
Summary of the invention
The invention provides a kind of method for transmitting down user data, can effectively reduce the descending interference in distributed antenna mobile communication system.
The invention provides a kind of method for transmitting down user data, be applied to distributed antenna mobile communication system, it is characterized in that, the method comprises:
Collect whole aerial signals;
Calculate the channel impulse response of each user on each antenna according to each user's aerial signal; Described channel impulse response
Wherein, midamble_data (1:128) is rear 128 points of 144 chip midamble parts in the respective antenna receive data; Midamble_code (1:128) is the midamble code word of transmitting terminal user after according to the displacement of transmitting terminal;
Calculate respectively the power of each user on each antenna according to described each user at the channel impulse response on each antenna;
According to effective antenna corresponding to each user of the power determination of described each user on each antenna;
User's downlink data is assigned to determine corresponding effectively sends to the user on antenna.
In method provided by the invention, the whole aerial signals of described collection also comprise: the whole aerial signals that will collect are transformed into the baseband signal of each user on each antenna; The described corresponding effectively antenna of determining each user's effective information of carrying according to aerial signal also comprises: the corresponding effectively antenna of determining each user's effective information of carrying according to the baseband signal of described each user on each antenna.
The described corresponding effectively antenna of determining each user's effective information of carrying according to aerial signal comprises: calculate the channel impulse response of each user on each antenna according to each user's aerial signal; Calculate respectively the power of each user on each antenna according to described each user at the channel impulse response on each antenna; According to effective antenna corresponding to described standby family each user of the power determination on each antenna.
Described according to effective antenna corresponding to each user of the power determination of each user on each antenna, comprising: with the power of each user on each antenna greater than the antenna of setting threshold as effective antenna corresponding to this user; Perhaps, calculate respectively the power threshold of each user on antenna according to the power of each user on each antenna, for each user, with the power of this user on antenna greater than the antenna of corresponding power threshold as effective antenna corresponding to this user.
Said method of the present invention also comprises: effective aerial information of each user is reported to radio network controller (RNC); Described RNC determines each user's network site according to effective aerial information of each user, and carries out dynamic channel allocation for the user.
Described effective aerial information with each user reports to RNC, specifically comprises: the measurement that utilizes angle to arrive measurement and positioning reports an effective aerial information with each user to report to RNC; Perhaps, generate measurement according to pre-defined rule and report item, report effective aerial information of each user to RNC.
Described RNC determines each user's network site according to effective aerial information of each user, comprising: described RNC parses effective aerial information of each user of reception according to described pre-defined rule, determines effective antenna corresponding to each user; And determine each user's network site according to the aerial position of preserving.
Described for the user carries out dynamic channel allocation, comprising: RNC is according to each user's network site, for being positioned at different time slot, carrier wave or the code channels of user assignment of same antenna overlay area.
Method provided by the invention also comprises: the carrier power of each antenna is reported to described RNC;
Described RNC is that on its effective antenna of user assignment, carrier power does not surpass carrier wave or the time slot of setting threshold.
The present invention also provides a kind of distributed antenna mobile communication system, comprising: wireless signal processing unit and core processing unit; Wherein:
The wireless signal processing unit is used for the transmitting antenna signal;
Core processing unit is used for determining according to each aerial signal that described wireless signal processing unit sends effective antenna that each user is corresponding; When sending down user data, the data that send to each user are assigned to respectively on effective antenna corresponding with each user send;
Described core processing unit comprises:
The channel impulse response computation subunit is used for calculating the channel impulse response of each user on each antenna according to each aerial signal that described wireless signal processing unit sends; Described channel impulse response
Wherein, midamble_data (1:128) is rear 128 points of 144 chip midamble parts in the respective antenna receive data; Midamble_code (1:128) is the midamble code word of transmitting terminal user after according to the displacement of transmitting terminal;
The power calculation subelement is used for calculating respectively the power of each user on each antenna according to described each user at the channel impulse response on each antenna;
Effectively antenna is judged subelement, is used for determining effective antenna corresponding to each user;
Down user data sends subelement, is assigned on effective antenna corresponding with each user for the downlink data with each user to send.
In system provided by the invention, described wireless signal processing unit is more than one.
Described core processing unit comprises that also the effective aerial information of user reports subelement, and described system also comprises the dynamic channel allocation unit; Wherein:
The effective aerial information of user reports subelement, is used for obtaining described effective antenna and judges the effective aerial information corresponding with the user that subelement is determined and report described dynamic channel allocation unit;
The dynamic channel allocation unit is used for the network site that effective aerial information that aerial information effective in described user report each user that subelement reports is determined each user, and according to each user network position carrying out dynamic channel allocation for the user.
Described dynamic channel allocation unit is arranged in the radio network controller of network side.
The present invention is by collecting whole aerial signals; Determine the corresponding effectively antenna of each user's effective information of carrying according to described aerial signal; User's downlink data is assigned to determine corresponding effectively sends to the user on antenna, therefore brought following beneficial effect:
1, effectively reduced the descending interference of system;
The antenna power that when 2, effectively having improved descending the transmission, user assignment arrives;
3, increased the channel capacity of distributed antenna mobile communication system, reduced system power dissipation, made distributed antenna mobile communication system have better autgmentability and flexibility;
4, the effective antenna of the user who determines can be reported to RNC, then RNC also can further determine customer location according to the effective aerial information of each user that reports, and helps the network side positioning service; In addition, RNC can also carry out dynamic channel allocation according to customer location, has further optimized the resource distribution of this system, has improved channel capacity.
Description of drawings
Fig. 1 provides one of a kind of method for transmitting down user data flow chart for the embodiment of the present invention;
Fig. 2 provides two of a kind of method for transmitting down user data flow chart for the embodiment of the present invention;
One of a kind of distributed antenna mobile communication system structural formula intention that Fig. 3 provides for the embodiment of the present invention;
Two of a kind of distributed antenna mobile communication system structural representation that Fig. 4 provides for the embodiment of the present invention;
Three of a kind of distributed antenna mobile communication system structural representation that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
Figure 1 shows that the embodiment of the present invention provides one of a kind of method for transmitting down user data flow chart, the method comprises the following steps:
S101: collect whole aerial signals;
S102: the corresponding effectively antenna of determining each user's effective information of carrying according to described aerial signal;
S103: user's downlink data is assigned to determine corresponding effectively sends to the user on antenna.
Wireless signal processing unit in existing spaced antenna mobile communcations system and core processing unit can be realized such scheme through after Function Extension: above-mentioned antenna is the reception antenna that is placed in the wireless signal processing unit, and core processing unit can be used for performing step S102 and the described function of step S103.Below the embodiment of the method for transmitting down user data that the embodiment of the present invention provided as an example of wireless signal processing unit and core processing unit example be elaborated.In addition, for explaining conveniently, the reception antenna in all wireless signal processing units is referred to as antenna.
Figure 2 shows that a kind of method for transmitting down user data that the embodiment of the present invention provides flow chart two, the method comprises:
S201: the wireless signal processing unit receive each user on each antenna signal and send to core processing unit.
In addition, the wireless signal processing unit also can further first be transformed into respectively each user with each user at the signal on each antenna and send to core processing unit again after the baseband signal on each antenna.
S202: each user that core processing unit provides a plurality of wireless signal processing units is at the channel impulse response of each user of the calculated signals on each antenna on every antenna.
Wherein, channel impulse response h is obtained by following formula:
In formula (1), midamble_data (1:128) is rear 128 points of 144 chip midamble parts in certain antenna reception data; Midamble_code (1:128) be the midamble code word of transmitting terminal user after according to the displacement of transmitting terminal (the midamble code word that transmitting terminal sends by RNC according to certain rule configuration, and notice sending and receiving end).
H is channel impulse response, and the window length of general h gets 16, namely gets front 16 points of IFFT result as the value of h.
In addition, if the wireless signal processing unit upload for the baseband signal of each user on each antenna, core processing unit can calculate the channel impulse response of each user on every antenna according to the baseband signal that receives.
S203: calculate respectively the power of each user on each antenna at the channel impulse response on each antenna according to each user.
For example, the number of antennas of establishing the base station is N altogether, and the corresponding sequence of the channel impulse response h of certain user on i root antenna that calculates in S102 is: { h
0, h
1..., h
M, the power of this user on this antenna is:
In formula (1), the span of i is 1 to M.
S204: for each user, the relatively power of this user on every antenna and the size of setting threshold, with power greater than the antenna of setting threshold as effective antenna corresponding to this user;
Perhaps, for each user, according to the power threshold of this user of the power calculation of this user on each antenna on antenna, for every antenna, if the power of this user on this antenna is greater than the threshold value that calculates, with this antenna as effective antenna corresponding to this user.
Wherein, the computation rule of certain the power threshold P ' of user A on antenna is:
The power maximum * β of P '=user A on all antennas
Wherein, β is a coefficient that value can be set as required.For example: establish the base station and have 3 antennas, calculate the power of certain user A on 3 antennas in step S203 and be respectively: P
1, P
2, P
3, P wherein
2＞P
1＞P
3, the power threshold of this user on all antennas is: P '=P
2* β.
S205: in down link, core processing unit will send to each user's data to be assigned to respectively on effective antenna corresponding to each user.
Interference when further reducing to send downlink data between each user data, the core processing unit of base station is when each descending transmission, and effective antenna corresponding to each user of determining in S104 in the time of can be according to up send determined the distribution method of down user data on each antenna.Embodiment is: for data of giving certain user to be sent, effective antenna that core processing unit is corresponding according to this user who determines in up link, this user's the data allocations of giving to be sent is sent to effective antenna corresponding to this user, i.e. non-effective antenna corresponding to this user data to this user to be sent of not participating in the distribution.Like this, can improve the transmitted power of effective antenna, in addition, due to not to non-effective antenna assignment corresponding to this user data of giving this user to be sent, therefore be equivalent to reduce the interference of this user data to all the other users on non-effective antenna corresponding to this user.
Best, after above-mentioned steps S204, also can be further in up link, effective aerial information of each user be reported to radio network controller (Radio Network Controller, RNC); Then RNC can determine according to effective aerial information of each user each user's position, and determines the dynamic channel allocation mode of this distributed antenna mobile communication system.Concrete implementation step comprises:
1, this subscriber channel impulse response on the non-effective antenna that each user is corresponding sets to 0, and all users are carried out joint-detection.
This step can further reduce the noise in up link.
2, core processing unit utilizes existing AOA measurement to report an effective aerial information with each user to report to RNC, perhaps, measures according to the rule generation that presets between core processing unit and RNC an effective aerial information that reports item to come report of user.
Because existing AOA mensuration no longer is applicable to distributed antenna mobile communication system, so the core processing unit of base station do not recycle the AOA mensuration and measures customer location, can utilize the measurement of AOA to report the effective aerial information that reports each user to RNC.A content that reports is no longer the user's that reports of traditional AOA measurement angular position information, but effective aerial information of each user.
The effective aerial information of each user reports after can encoding by the coding rule of making an appointment between core processing unit and RNC.For example: for certain user, as the coding rule of making an appointment between core processing unit and RNC be: use 16 ary codes recording user effective informations; Wherein, stipulate effective antenna of corresponding this user of each code: code is that antenna corresponding to 1 this code of expression is effective antenna of this user, otherwise code is that antenna corresponding to 0 this code of expression is this user's non-effective antenna; Suppose that the base station has 6 antennas, can report the combinational code of the significant bit information of each antenna corresponding to each user to RNC is 0x100001, represent that effective antenna corresponding to this user is antenna 1 and antenna 6, be to have carried this user's base band data on antenna 1 and antenna 6, wherein, 0x represents that the code that reports is 16 ary codes.
Optionally, core processing unit also reports the carrier power of each antenna to RNC.
3, RNC determines each user's position and determines the DCA mode according to effective aerial information of each user who receives.
Wherein, because network side has been planned and has been kept in the distributed intelligence of each antenna in the network planning, therefore RNC can be according to effective antenna number corresponding to each user in effective aerial information of definite each user who receives of predetermined in advance coding rule, and then according to each antenna number of network side pre-save and the corresponding relation of aerial position, determine user's particular location and determine the interior user of every antenna coverage areas.For example: effective aerial information of certain user that RNC receives is 0x100001, can to determine effective antenna of this user be antenna 1 and antenna 6 to RNC, therefore, RNC can determine according to the antenna distributed intelligence of network side preservation the overlapping place that this user is positioned at the overlay area of the overlay area of antenna 1 and antenna 6.
RNC determines the DCA strategy:
For the user who is positioned under same antenna overlay area, can be because asynchronous or multipath etc. produce multi-user interference in up link; Same, in down link sends, due to the power limited of single antenna, therefore during descending the transmission for corresponding to same effective antenna and be in a plurality of users of the same antenna under covering, the power of this effective antenna need send to a plurality of users, and power sends and is restricted.Therefore, when RNC carries out dynamic channel allocation to the user, can will be assigned to different carrier waves, time slot and code channel corresponding to same effective antenna and the user data that is positioned at same antenna covering area, to reduce the interference between these users in communication process, avoid simultaneously a plurality of users of the same antenna under covering to fight for the power of single antenna.
In addition, if RNC receives the carrier power of each antenna that core processing unit reports, at first RNC judges according to the antenna carrier power threshold of setting whether each carrier wave of every antenna transships, if certain carrier power of certain root antenna surpasses the antenna carrier power threshold of setting, determine these carrier wave overloads, RNC does not surpass carrier wave or the time slot of setting threshold for carrier power on its effective antenna of user assignment as far as possible when the user is carried out dynamic channel allocation.
As seen, effective aerial information that RNC is corresponding according to each user that core processing unit reports can be determined each user's position, thereby realizes dynamic assignment user's the resources such as carrier wave, time slot and code channel.
Optionally, RNC can realize that user's Memorability locates and fix the DCA mode of this distributed antenna mobile communication system according to effective aerial information of each user who receives.Be that RNC can store each customer location of determining, and fix the DCA mode of this distributed antenna mobile communication system.In addition, because user's position may be moved over time, therefore the core processing unit of base station can be as required regularly to effective aerial information of RNC report of user, RNC is after receiving the effective aerial information of each user, whether the effective aerial information of each user that can first judge this reception is consistent with the effective aerial information of each user of last time reception, if consistent, RNC still uses last channel to each user assignment to communicate, otherwise, according to the effective aerial information of each user of this reception, each user is re-started dynamic channel allocation.
Method for transmitting down user data in the distributed antenna mobile communication system that provides by the embodiment of the present invention can reduce the interference between different user; Can also avoid a plurality of users under same antenna covering to fight for single-antenna power, improve the user power that each antenna sends, reduce the interference of a plurality of users on the same antenna in descending transmission.Greatly improved the capacity of wireless communication system.
Method for transmitting down user data in a kind of distributed antenna mobile communication system that provides corresponding to the embodiment of the present invention, the embodiment of the present invention also provides a kind of distributed antenna mobile communication system, as shown in Figure 3, comprising: wireless signal processing unit 31 and core processing unit 32, wherein:
Wireless signal processing unit 31, each aerial signal that is used for receiving sends to core processing unit 32.
Preferably, the distributed antenna mobile communication system that provides of the embodiment of the present invention has a plurality of wireless signal processing units 31.
Preferably, wireless signal processing unit 31 can be further with the aerial signal that receives be transformed to each user on each antenna baseband signal and send to core processing unit 32, core processing unit 32 determines according to the baseband signal of each user on each antenna effective antenna that each user is corresponding.
Figure 4 shows that a kind of distributed antenna mobile communication system structural representation two that the embodiment of the present invention provides, wherein, wherein core processing unit 32 can also comprise:
Channel impulse response computation subunit 41, power calculation subelement 42, effective antenna judge that subelement 43, down user data send subelement 44.
Channel impulse response computation subunit 41, the aerial signal that is used for providing according to the wireless signal processing unit calculates the channel impulse response of each user on each antenna.
Effectively antenna is judged subelement 43, is used for determining the effective antenna corresponding with the user.
Concrete grammar comprises: judge the power of each user on each antenna whether greater than the threshold value of setting, with power greater than the antenna of setting threshold as effective antenna corresponding to respective user; Perhaps, rated output threshold value, and whether judge the power of each user on each antenna greater than the power threshold that calculates, with power greater than the antenna of power threshold as effective antenna corresponding to respective user.
Down user data sends subelement 44, is assigned on effective antenna corresponding with each user for the downlink data with each user to send.
As shown in Figure 5, the core processing unit 32 in the distributed antenna mobile communication system that the embodiment of the present invention provides comprises that also the effective aerial information of user reports subelement 51, and described distributed antenna mobile communication system also comprises dynamic channel allocation unit 52; Wherein:
The effective aerial information of user reports subelement 51, is used for obtaining effective aerial information corresponding to each user that effective antenna judges that subelement 43 determines and reports dynamic channel allocation unit 52;
Dynamic channel allocation unit 52 is used for aerial information effective in the user and reports effective aerial information of each user that subelement 51 reports to determine each user's network site, and carries out dynamic channel allocation according to each user's network site for the user.
Preferably, dynamic channel allocation unit 52 is arranged in the radio network controller of network side.
Method for transmitting down user data in the distributed antenna mobile communication system that the embodiment of the present invention provides by determining the effective antenna corresponding with each user, is assigned to each user's downlink data on effective antenna corresponding with this user and sends; Can also will adjust to different time slots or carrier wave corresponding to same effective antenna and the user that is positioned at same antenna covering area, thereby realize improving the transmitted power of effective antenna corresponding to each user and reducing the interference of each user on antenna, improve system communication quality, make system have greater flexibility and autgmentability.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method for transmitting down user data, be applied to distributed antenna mobile communication system, it is characterized in that, the method comprises:
Collect whole aerial signals;
Calculate the channel impulse response of each user on each antenna according to each user's aerial signal; Described channel impulse response
Wherein, midamble_data (1:128) is rear 128 points of the 144chip midamble part in the respective antenna receive data; Midamble_code (1:128) is the midamble code word of transmitting terminal user after according to the displacement of transmitting terminal;
Calculate respectively the power of each user on each antenna according to described each user at the channel impulse response on each antenna;
According to effective antenna corresponding to each user of the power determination of described each user on each antenna;
User's downlink data is assigned to determine corresponding effectively sends to the user on antenna;
Effective aerial information of each user is reported to radio network controller (RNC);
Described RNC determines each user's network site according to effective aerial information of each user, and carries out dynamic channel allocation for the user.
2. the method for claim 1, is characterized in that, the whole aerial signals of described collection also comprise: the whole aerial signals that will collect are transformed into the baseband signal of each user on each antenna;
The described corresponding effectively antenna of determining each user's effective information of carrying according to aerial signal also comprises: the corresponding effectively antenna of determining each user's effective information of carrying according to the baseband signal of described each user on each antenna.
3. the method for claim 1, is characterized in that, and is described according to effective antenna corresponding to each user of the power determination of each user on each antenna, comprising:
With the power of each user on each antenna greater than the antenna of setting threshold as effective antenna corresponding to this user; Perhaps
Calculate respectively the power threshold of each user on antenna according to the power of each user on each antenna, for each user, with the power of this user on antenna greater than the antenna of corresponding power threshold as effective antenna corresponding to this user.
4. the method for claim 1, is characterized in that, described effective aerial information with each user reports to RNC, specifically comprises:
The measurement that utilizes angle to arrive measurement and positioning reports an effective aerial information with each user to report to RNC; Perhaps
Generate measurement according to pre-defined rule and report item, report effective aerial information of each user to RNC.
5. method as claimed in claim 4, is characterized in that, described RNC determines each user's network site according to effective aerial information of each user, comprising:
Described RNC parses effective aerial information of each user of reception according to described pre-defined rule, determine effective antenna corresponding to each user; And determine each user's network site according to the aerial position of preserving.
6. method as claimed in claim 5, is characterized in that, and is described for the user carries out dynamic channel allocation, comprising:
RNC is according to each user's network site, for being positioned at different time slot, carrier wave or the code channels of user assignment of same antenna overlay area.
7. method as claimed in claim 6, is characterized in that, also comprises:
The carrier power of each antenna is reported to described RNC;
Described RNC is that on its effective antenna of user assignment, carrier power does not surpass carrier wave or the time slot of setting threshold.
8. a distributed antenna mobile communication system, is characterized in that, comprising: wireless signal processing unit and core processing unit; Wherein:
The wireless signal processing unit is used for the transmitting antenna signal;
Core processing unit is used for determining according to each aerial signal that described wireless signal processing unit sends effective antenna that each user is corresponding; When sending down user data, the data that send to each user are assigned to respectively on effective antenna corresponding with each user send;
The dynamic channel allocation unit is used for the network site that effective aerial information that aerial information effective in the user report each user that subelement reports is determined each user, and according to each user network position carrying out dynamic channel allocation for the user;
Described core processing unit comprises:
The channel impulse response computation subunit is used for calculating the channel impulse response of each user on each antenna according to each aerial signal that described wireless signal processing unit sends; Described channel impulse response
Wherein, midamble_data (1:128) is rear 128 points of the 144chip midamble part in the respective antenna receive data; Midamble_code (1:128) is the midamble code word of transmitting terminal user after according to the displacement of transmitting terminal;
The power calculation subelement is used for calculating respectively the power of each user on each antenna according to described each user at the channel impulse response on each antenna;
Effectively antenna is judged subelement, is used for determining effective antenna corresponding to each user;
Down user data sends subelement, is assigned on effective antenna corresponding with each user for the downlink data with each user to send;
The effective aerial information of user reports subelement, is used for obtaining described effective antenna and judges the effective aerial information corresponding with the user that subelement is determined and report described dynamic channel allocation unit.
9. system as claimed in claim 8, is characterized in that, described wireless signal processing unit is more than one.
10. system as claimed in claim 9, is characterized in that, described dynamic channel allocation unit is arranged in the radio network controller of network side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710120693 CN101374005B (en) | 2007-08-23 | 2007-08-23 | Method for transmitting down user data and distributed antennae mobile communication system |
| PCT/CN2008/001499 WO2009026785A1 (en) | 2007-08-23 | 2008-08-19 | A method for sending downlink user data and a distributed antenna mobile communication system |
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| CN 200710120693 CN101374005B (en) | 2007-08-23 | 2007-08-23 | Method for transmitting down user data and distributed antennae mobile communication system |
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| CN101374005A CN101374005A (en) | 2009-02-25 |
| CN101374005B true CN101374005B (en) | 2013-05-15 |
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| CN104640148B (en) * | 2010-01-15 | 2016-03-30 | 华为技术有限公司 | Measure report method, Apparatus and system |
| CN102136859A (en) * | 2010-12-16 | 2011-07-27 | 上海华为技术有限公司 | Antenna data processing method and device |
| CN104253640B (en) * | 2013-06-27 | 2019-01-11 | 普天信息技术研究院有限公司 | A kind of uplink receiving method of cell combining system |
| WO2021000209A1 (en) * | 2019-07-01 | 2021-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and devices for wireless communication |
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| US6308085B1 (en) * | 1998-03-13 | 2001-10-23 | Kabushiki Kaisha Toshiba | Distributed antenna system and method of controlling the same |
| CN1819573A (en) * | 2005-02-09 | 2006-08-16 | 朗迅科技公司 | Distributed multiple antenna scheduling for wireless packet data communication system using ofdm |
| CN1917388A (en) * | 2005-08-16 | 2007-02-21 | 东南大学 | Distribution type antenna system, and communication method |
| CN1953574A (en) * | 2005-10-18 | 2007-04-25 | 上海贝尔阿尔卡特股份有限公司 | A distributed base station, communication system and its used signal transmission method |
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| DE10116170A1 (en) * | 2001-03-31 | 2002-10-10 | Alcatel Sa | Method for operating a radio-based communication system |
| CN1933359A (en) * | 2005-09-15 | 2007-03-21 | 西门子（中国）有限公司 | Down link control information transmitting method in distributing antenna system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6308085B1 (en) * | 1998-03-13 | 2001-10-23 | Kabushiki Kaisha Toshiba | Distributed antenna system and method of controlling the same |
| CN1819573A (en) * | 2005-02-09 | 2006-08-16 | 朗迅科技公司 | Distributed multiple antenna scheduling for wireless packet data communication system using ofdm |
| CN1917388A (en) * | 2005-08-16 | 2007-02-21 | 东南大学 | Distribution type antenna system, and communication method |
| CN1953574A (en) * | 2005-10-18 | 2007-04-25 | 上海贝尔阿尔卡特股份有限公司 | A distributed base station, communication system and its used signal transmission method |
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