CN102595432A - Indoor multisystem-shared uplink and downlink signal processing method and device for the same - Google Patents
Indoor multisystem-shared uplink and downlink signal processing method and device for the same Download PDFInfo
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Abstract
The embodiment of the invention provides an indoor multisystem-shared uplink and downlink signal processing method and a device for the same. In an indoor distributed system shared by multiple communication networks, at least multiple indoor antennae jointly covering the frequency range of the uplink signals are selected, the uplink signals received by the selected multiple indoor antennae in a diversity reception manner are combined into one path of uplink signal; when a base station needs to transmit the downlink signals, an antenna subset with better coverage quality is selected for performing downlink coverage according to the position of a terminal, or the amplitudes of the downlink signals of different ports are weighted, and the offset of the antenna horizontal beam after weighting is used for enhancing the downlink coverage of the needed direction. The quality of the uplink signals received by each communication network is enhanced, and the transmission quality of the downlink signals is improved.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of up, downlink signal processing method and equipment of indoor shared by multiple systems.
Background technology
Be accompanied by the development of communication network, the data service use amount increases rapidly, and that the data service of the overwhelming majority occurs in is indoor, and therefore, promoting communication network becomes the task of top priority at indoor covering quality.
The 2G system (as, cdma system and gsm system) frequency of utilization is the electromagnetic wave of 824～960MHz, and this electromagnetic waves ability is stronger, and indoor signal is better.The 3G system (as, CDMA2000 system, WCDMA system and TD-SCDMA system) mostly frequency of utilization be the electromagnetic wave about 2000MHz, the ability of this electromagnetic waves building a little less than, indoor signal is relatively poor with respect to the 2G system.And the further raising of the wave frequency that uses along with communication system (like, LTE system), the ability of this electromagnetic waves building further weakens, and indoor signal will form more blind area with respect to the 3G system.At present indoor distributed system adopts the method for omni directional monopoles antenna more, but the raising of the wave frequency that uses along with communication system, the coverage distance of omni directional monopoles antenna is shorter, can not satisfy the covering quality requirement of indoor signal transmission.
The method of traditional indoor covering quality of lifting communication network is mainly through improving the descending covering quality of communication network, waits like the number of nodes that increases domestic aerial or the transmitting power that increases antenna for base station and improves communication network at indoor covering quality.
The method that improves the fair transmitting power through increasing terminal antenna of the uplink communication of communication network realizes; But because the power that the terminal transmits is limited; Improve the ability that the terminal transmits and be restricted through increasing terminal transmit power; Cause the up covering quality of communication network relatively poor; The terminal often occurs and can receive the downstream signal that send the base station, the purpose network element of terminal uplink communication but can't receive upward signal that sends at the terminal or the relatively poor situation of quality of uplink signal that receives like the base station.
There is following problem in the existing method of improving the descending covering of communication network:
The transmitting power that increases antenna for base station also can receive the restriction of base station power capacity and electromagnetic radiation intensity, and the descending coverage of communication network is still limited, and descending covering quality is relatively poor and can not solve the problem at covering dead angle in some zone;
The number of nodes that increases domestic aerial will inevitably make to connect up complicated and increase network node and cause the complicated of network configuration, can not well solve the problem at covering dead angle and the relatively poor problem of descending covering quality in some zone.Particularly under the situation of shared by multiple systems, because the frequency of each system is different, the scope difference of covering is very big, if increase the number of nodes of antenna, individual areas multinode in low frequency system repeats to cover and causes the generation that disturb the adjacent area.
Therefore, need the signal processing scheme that improves the uplink and downlink signals transmission quality under a kind of shared by multiple systems situation of introducing badly.
Summary of the invention
The embodiment of the invention provides a kind of upward signal processing method and equipment of indoor shared by multiple systems, is used for solving existing communication network, the problem that the quality of uplink signal that the base station receives is relatively poor.
A kind of upward signal processing method is applied in the shared indoor distributed system of multi communication network, and this method comprises:
Uplink process to every kind of communication network; From domestic aerial, select to have the M root domestic aerial of common covering frequency range; Wherein, The polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the said M root domestic aerial, or the polarization mode of said M root domestic aerial is identical, and said M is the integer greater than 1;
The M root domestic aerial that utilization is determined receives upward signal;
The said upward signal in M road of M root domestic aerial diversity reception is merged into capable on the way signal;
Wherein, said domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or the multi-polarization antenna.
A kind of upward signal treatment facility is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
The antenna selected cell; Be used for uplink process to every kind of communication network; From domestic aerial, select to have the M root domestic aerial of common covering frequency range; Wherein, the polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the said M root domestic aerial, or the polarization mode of said M root domestic aerial is identical; Said M is the integer greater than 1, and said domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or the multi-polarization antenna;
Signal receiving unit is used to utilize the M root domestic aerial of determining to receive upward signal;
The signal merge cells is used for the said upward signal in M road of M root domestic aerial diversity reception is merged into capable on the way signal.
In the scheme that the upward signal that the embodiment of the invention provides is handled; In the shared indoor distributed system of multiple communication network; To the terminal of using every kind of communication network, in the time of upward signal need being sent at this terminal, all can select to cover jointly at least two domestic aerials of this upward signal place frequency range; Space diversity or polarization diversity through at least two domestic aerials selecting; The upward signal that at least two domestic aerials selecting receive is respectively merged into capable on the way signal, thereby utilize diversity gain, the quality of the upward signal that the raising base station receives.
The embodiment of the invention provides a kind of downlink signal processing method and equipment of indoor shared by multiple systems, is used for solving existing communication network, the problem that the descending covering quality of base station signal is relatively poor.
A kind of downlink signal processing method is applied in the shared indoor distributed system of multi communication network, and this method comprises:
To the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
Confirm that coverage comprises the domestic aerial of said positional information, from the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition;
The domestic aerial that utilization is selected sends downstream signal to said terminal.
A kind of downstream signal treatment facility is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
Receiving element is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback;
Antenna is confirmed the unit; Be used for confirming that coverage comprises the domestic aerial of said positional information; From the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition;
Transmitting element is used to utilize the domestic aerial of selecting to send downstream signal to said terminal.
In the scheme that the downstream signal that the embodiment of the invention provides is handled; In the shared indoor distributed system of multiple communication network; To the terminal of using every kind of communication network; Through selecting place, position, terminal, at least one optimum antenna of covering quality carries out descending covering, thereby improves the descending covering quality of communication network.
The embodiment of the invention provides a kind of downlink signal processing method and equipment of indoor shared by multiple systems, is used for solving existing communication network, and there is the problem that covers the dead angle in the descending covering of base station signal.
A kind of downlink signal processing method is applied in the shared indoor distributed system of multi communication network, and this method comprises:
To the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
To every domestic aerial in the many domestic aerials; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of the represented position of said positional information and imposes a condition;
Utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
A kind of downstream signal treatment facility is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
Receiving element is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback;
Adjustment unit; Be used for every domestic aerial to many domestic aerials; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of the represented position of said positional information and imposes a condition;
Transmitting element is used to utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
In the scheme that the downstream signal that the embodiment of the invention provides is handled; In the shared indoor distributed system of multiple communication network; To each communication network, the amplitude and the phase place of the downstream signal that the port of many antennas being used for transmission of downlink signal is transmitted are carried out weighting, and utilize the downstream signal after the antenna transmission weighting to realize descending covering; Strengthen the descending covering of required direction through the skew of horizontal beam, solve the problem at descending covering dead angle.
Through the scheme that the embodiment of the invention provides, make to each communication network, during like any communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN, all can improve the quality of uplink and downlink signals transmission.And can directly utilize many antennas of the present invention and multichannel to adopt the mimo antennas technology to improve the uplink and downlink coverage and the transmission rate of indoor distributed system in the wlan system of 802.11n standard with having used at LTE.Therefore, the present invention not only can use in 2G, 3G and wlan system simultaneously can also smoothly be applied to the LTE system, has to cover current all indoor distributed system functions simultaneously.
Description of drawings
The flow chart of steps of a kind of upward signal processing method that Fig. 1 provides for the embodiment of the invention one;
The structural representation of a kind of upward signal treatment facility that Fig. 2 provides for the embodiment of the invention two;
Fig. 3 is a kind of system architecture sketch map that the embodiment of the invention three and embodiment eight provide;
The flow chart of steps of a kind of downlink signal processing method that Fig. 4 provides for the embodiment of the invention four;
The structural representation of a kind of downstream signal treatment facility that Fig. 5 provides for the embodiment of the invention five;
The flow chart of steps of a kind of downlink signal processing method that Fig. 6 provides for the embodiment of the invention six;
The structural representation of a kind of downstream signal treatment facility that Fig. 7 provides for the embodiment of the invention seven.
Embodiment
Technical scheme of the present invention is described with each embodiment below in conjunction with Figure of description.
Embodiment one,
The embodiment of the invention one provides a kind of upward signal processing method, is applied in the shared indoor distributed system of multi communication network, and the steps flow chart of this method is as shown in Figure 1, specifically may further comprise the steps:
At least two domestic aerials that step 101, selection have common covering frequency range.
In various embodiments of the present invention, said domestic aerial can be each the single-polarized antenna oscillator in single-polarized antenna and/or the multi-polarization antenna.
In the shared indoor distributed system of multiple communication network; Said communication network can be any communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN; Upward signal to any terminal transmission of using a certain communication network; According to the frequency range at this upward signal place, confirm to cover M (M is the integer greater than 1) the root domestic aerial that frequency range includes this upward signal place frequency range, and; The polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the polarization mode quadrature of other at least one domestic aerial in the M root domestic aerial, or the polarization mode of said M root domestic aerial is identical.
Wherein, the orthogonal polarizations mode includes but not limited to comprise following two kinds of orthogonal manner:
+ 45 degree polarization modes and-45 degree polarization modes, or horizontal polarization mode and perpendicular polarization mode.
Special, when sending upward signal,, be generally 820MHz～960MHz because the frequency of the frequency range that system covers is lower at the terminal of using GSM900MHz and CDMA800MHz system, therefore, the general using vertical polarized antenna receives this upward signal.
The polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the polarization mode quadrature of other at least one domestic aerial in the M root domestic aerial have two kinds of situation:
First kind of situation, adopt the antenna amount of any one polarization mode to be 1; As determine the frequency range that 2 antennas have common covering; And 1 horizontally-polarized antenna and 1 vertical polarized antenna of wherein having the polarization mode quadrature, in this case, can be according to the polarization diversity principle; Utilize polarization diversity gain, utilize these 2 antennas to receive upward signal respectively.
Second kind of situation, at least a polarization mode corresponding antenna quantity are greater than 1; As determine the frequency range that 3 antennas have common covering; And 1 horizontally-polarized antenna and 2 vertical polarized antennas of wherein having the polarization mode quadrature, in this case, can be according to polarization diversity and space diversity principle; Utilize polarization diversity gain and space diversity gain, utilize these 3 antennas to receive upward signal respectively.
The domestic aerial that step 102, utilization are determined receives upward signal.
Behind the M root domestic aerial of determining the upward signal that is used to receive the terminal transmission of using a certain communication network,, utilize every domestic aerial in the M root domestic aerial of determining to receive this upward signal respectively to the upward signal that send at any terminal.
The said upward signal in M road that said M root domestic aerial receives can pass through N channel transfer, and said N is the integer that is not more than M.
The concrete implementation procedure of this step is: with the M road upward signal of the M root domestic aerial diversity reception of determining, respectively through corresponding channel transfer, and finally merge into capable on the way signal.
During the polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in M root domestic aerial and the M root domestic aerial; The M road upward signal that M root domestic aerial receives is respectively merged into capable on the way signal, specifically comprises:
In M root domestic aerial, the upward signal that the domestic aerial that adopts the equipolarization mode is received tentatively merges, and the upward signal that will obtain after will tentatively merging is merged into capable on the way signal once more.
When the polarization mode of M root domestic aerial was identical, the M road upward signal that M root domestic aerial is received was respectively merged into and is gone signal on the way, specifically comprises:
The M road upward signal that M root domestic aerial receives is respectively merged into capable on the way signal.
Embodiment two,
The embodiment of the invention two provides a kind of upward signal treatment facility; Be applied in the shared indoor distributed system of multi communication network; The structural representation of this equipment is as shown in Figure 2, and this equipment comprises antenna selected cell 11, signal receiving unit 12 and signal merge cells 13, wherein:
Antenna selected cell 11 is used for the uplink process to every kind of communication network; From domestic aerial, select to have the M root domestic aerial of common covering frequency range; Wherein, The polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the said M root domestic aerial, or the polarization mode of said M root domestic aerial is identical, and said M is the integer greater than 1; Signal receiving unit 12 is used to utilize the M root domestic aerial of determining to receive upward signal; Signal merge cells 13 is used for the said upward signal in M road of M root domestic aerial diversity reception is merged into capable on the way signal;
Wherein, said domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or the multi-polarization antenna.
The said upward signal in M road that said signal receiving unit 12 specifically is used for M root domestic aerial is received is through N channel transfer, and said N is the integer that is not more than M.
When said signal merge cells 13 specifically is used for the polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial of M root domestic aerial and M root domestic aerial; The upward signal that the domestic aerial that adopts the equipolarization mode in the M root domestic aerial is received tentatively merges, and the upward signal that will obtain after will tentatively merging is merged into capable on the way signal once more.
Said signal merge cells 13 specifically is used for polarization mode at M root domestic aerial when identical, and the M road upward signal that M root domestic aerial is received is respectively merged into and gone signal on the way.
Through a concrete instance embodiment of the invention one and the technical scheme that embodiment two provides are elaborated below.
Embodiment three,
The embodiment of the invention three is to utilize upward signal treatment facility that the embodiment of the invention two provides to realize the instantiation of the upward signal processing method that the embodiment of the invention one provides, and the system architecture that the embodiment of the invention three provides is as shown in Figure 3.This system architecture is applicable in the shared indoor distributed system of multiple communication network that said communication network can be any communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN.
Be example with the shared indoor distributed system of LTE system, gsm system and TD-SCDMA system respectively below, the system architecture among the embodiment three is described.
As shown in Figure 3; Shared indoor distributed system is distributed in the a-quadrant, B is regional, C is regional; The distance that the A/B/C zone is separated by is far away; Can look the A/B/C zone and be the different floors in the same building thing, the coverage condition of describing different poliarizing antennas has been classified in this case as, has adopted the antenna of different polarization to cover in A, B, C zone; And under actual conditions in the same building thing the general antenna that adopts the equipolarization type; In whole domestic aerials that lay the a-quadrant, there is the antenna in 3 dual polarization antenna radiation nodes, comprise 1 vertical polarized antenna oscillator and 1 dual polarized antenna that the horizontally-polarized antenna oscillator is formed in each dual polarization antenna radiation node; The vertical polarized antenna oscillator can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range, and horizontally-polarized antenna can cover 1710MHz～2700MHz frequency range; In whole domestic aerials that lay in the B zone; Exist the antenna in 3 vertical polarized antenna radiation nodes can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range; And; Be laid with two vertical polarized antennas that have a determining deviation (general spacing is 2～10 λ, and λ is a wavelength) in each vertical polarized antenna radiation node; In whole domestic aerials that lay in the C zone; Exist the antenna in 3 ± 45 ° poliarizing antenna radiation nodes can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range; And, be integrated with 1+45 ° poliarizing antenna oscillators and 1 dual polarized antenna that-45 ° of poliarizing antenna oscillators are formed in each aerial radiation node.
Be example with the a-quadrant below, during indoor distributed system in the shared by multiple systems a-quadrant, use the process of this indoor distributed system to describe TD-SCDMA terminal and LTE terminal.
When upward signal need be sent in the TD-SCDMA terminal; To use frequency range is that 1880～1920MHz and 2010～2025MHz are example, and then the antenna selected cell need select to cover jointly many domestic aerials of 1880～1920MHz and 2010～2025MHz frequency range from domestic aerial.
As shown in Figure 3; In the a-quadrant; In each dual polarization antenna radiation node (node 1, node 2 and node 3); Vertical polarized antenna oscillator and horizontally-polarized antenna oscillator all can cover 1880～1920MHz and 2010～2025MHz frequency range; Promptly each node has 2 antennas can cover 1880～1920MHz and 2010～2025MHz frequency range in the a-quadrant, and therefore, the antenna selected cell can be selected the antenna oscillator of 2 different polarization of common covering 1880～1920MHz and 2010～2025MHz frequency range from dual polarization antenna radiation node 1.
After signal receiving unit is determined 2 domestic aerials (antenna oscillator) that are used to receive the upward signal that sends at this TD-SCDMA terminal at the antenna selected cell, utilize 2 domestic aerials determining to receive the upward signal that send at this TD-SCDMA terminal respectively.
When the signal merge cells receives upward signal at the confirmation signal receiving element, with 2 domestic aerial diversity receptions determining to 2 road upward signals merge into 1 road upward signal.As shown in Figure 3, the concrete operations that signal merges are:
In dual polarization antenna radiation node 1, horizontally-polarized antenna oscillator and vertical polarized antenna oscillator diversity reception 2 road upward signals, and pass through channel transfer separately respectively.
With the horizontally-polarized antenna oscillator accordingly in the passage with the vertical polarized antenna oscillator accordingly in the passage respectively the upward signal of transmission send to the purpose TD-SCDMA network element of TD-SCDMA terminal uplink signal transmissions jointly; Like the TD-SCDMA base station; And through twin-channel RRU, BBU transmission; Finally merge into capable on the way signal in the base station; This purpose TD-SCDMA network element merges into 1 the tunnel to the upward signal that receives, and realizes utilizing 1 dual polarized antenna that is integrated with 1 horizontally-polarized antenna oscillator and 1 vertical polarized antenna oscillator to receive the upward signal that send at the TD-SCDMA terminal jointly.According to the polarization diversity principle, utilize polarization diversity gain, the quality of enhanced uplink signal transmission.
When upward signal need be sent in the LTE terminal; Use frequency range to be example with the terminal as 2300MHz～2400MHz; The antenna selected cell can be selected 1 vertical polarized antenna oscillator and 1 horizontally-polarized antenna oscillator of common covering 2300MHz～2400MHz frequency range from the poliarizing antenna radiation node 1 of a-quadrant; Adopt the covering quality and the message transmission rate of MIMO antenna technology raising network, concrete application process, the present invention repeats no more.
Be example with the B zone below, during indoor distributed system in shared by multiple systems B zone, use the process of this indoor distributed system to describe the GSM terminal.
When upward signal need be sent in the GSM terminal, the frequency range that the GSM900MHz system uses was 880MHz～960MHz, and then, the antenna selected cell need select to cover the domestic aerial of 880MHz～960MHz frequency range from domestic aerial.
As shown in Figure 3; In the B zone; Having in the vertical polarized antenna radiation node has 2 vertical polarized antennas can cover 820MHz～960MHz frequency range; Therefore, the antenna selected cell can be selected 2 vertical polarized antennas that cover 820MHz～960MHz frequency range from any radiation node in B zone.
After signal receiving unit is determined 2 domestic aerials that are used to receive the upward signal that sends at this GSM terminal at the antenna selected cell, utilize 2 domestic aerials determining to receive the upward signals that send at this GSM terminal, and through the channel transfer upward signal.
The upward signal that transmits in this passage is sent to the purpose GSM network element of GSM terminal uplink signal transmissions,, realize utilizing 2 vertical polarized antennas to receive the upward signal that send at the GSM terminals like the GSM base station.
When if upward signal is sent in the a-quadrant in the GSM terminal, the vertical polarized antenna oscillator of then selecting to satisfy coverage condition receives upward signal.
Similar when C zone covers with the a-quadrant, with the dual polarized antenna replacement of the integrated+45 ° poliarizing antenna oscillator of same node and-45 ° of poliarizing antenna oscillators integrated a dual polarized antenna of horizontally-polarized antenna oscillator and vertical polarized antenna oscillator.
Embodiment four,
The embodiment of the invention four provides a kind of downlink signal processing method, is applied in the shared indoor distributed system of multi communication network, and the steps flow chart of this method is as shown in Figure 4, specifically may further comprise the steps:
The positional information of step 201, receiving terminal feedback.
At communication network element, need, the terminal need communicate when sending downstream signal like the base station with the terminal, the positional information of receiving terminal feedback, thus confirm the position that the terminal belongs to.
Said terminal can be one, also can be for a plurality of, and said position can be the position at place, a terminal, also can be the band of position at place, a plurality of terminal.
Step 202, confirm to be used for the antenna of transmission of downlink signal.
Confirm that coverage comprises the domestic aerial of said positional information, from the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition.
The transmission quality of said downstream signal can be used to represent that the parameter of communication quality is definite by at least one; The transmission quality of said downstream signal satisfy impose a condition be meant said at least one be used to represent that the parameter of communication quality satisfies imposes a condition, like signal strength signal intensity greater than the threshold value of setting.
The antenna transmission downstream signal that step 203, utilization are selected.
At least one domestic aerial that utilization is selected sends downstream signal to said terminal.
When the antenna amount of in step 202, determining was many, then after step 202, and before the step 203, said method also comprised step 202 ':
Step 202 ', the amplitude and the phase place of downstream signal to be sent are carried out weighting.
This step specifically comprises; To the every domestic aerial of selecting; Amplitude and phase place to downstream signal to be sent in the antenna port in this domestic aerial are carried out weighting, form the wave beam skew after the downstream signal weighting to be sent and make interference value between the said domestic aerial less than threshold value.
Through step 202 ', interference between antennas can be reduced, and the upward signal covering quality on the specific direction can also be further strengthened through the scheme of this step.
Embodiment five,
The embodiment of the invention five provides a kind of downstream signal treatment facility, is applied in the shared indoor distributed system of multi communication network, and the structural representation of this equipment is as shown in Figure 5, comprises that specifically receiving element 21, antenna confirm unit 22 and transmitting element 23, wherein:
Receiving element 21 is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback; Antenna confirms that unit 22 is used for confirming that coverage comprises the domestic aerial of said positional information; From the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition; Transmitting element 23 is used to utilize the domestic aerial of selecting to send downstream signal to said terminal.
This equipment also comprises adjustment unit 24:
Said transmitting element 23 specifically is used to utilize the downstream signal after the domestic aerial of selecting sends amplitude and phase weighting.
Embodiment six,
The embodiment of the invention six provides a kind of downlink signal processing method, is applied in the shared indoor distributed system of multi communication network, and the steps flow chart of this method is as shown in Figure 6, specifically may further comprise the steps:
The positional information of step 301, receiving terminal feedback.
Identical with the embodiment of the invention four, at communication network element, need, the terminal also need communicate when sending downstream signal with the terminal like the base station, the positional information of receiving terminal feedback, thus confirm the position that the terminal belongs to.
To the every domestic aerial that is used for to many domestic aerials of said terminal transmission downstream signal; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the said domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of said position and imposes a condition.
As, make after the downstream signal weighting to be sent, said domestic aerial at the interference value of said position less than threshold value or the downstream signal intensity on specific direction greater than set point.
Utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
Embodiment seven,
The embodiment of the invention seven provides a kind of downstream signal treatment facility, is applied in the shared indoor distributed system of multi communication network, and the structural representation of this equipment is as shown in Figure 7, specifically comprises receiving element 31, adjustment unit 32 and transmitting element 33, wherein:
Receiving element 31 is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback; Adjustment unit 32 is used for every domestic aerial to many domestic aerials; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the said domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of the represented position of said positional information and imposes a condition; Transmitting element 33 is used to utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
Through a concrete instance technical scheme that the embodiment of the invention four～embodiment seven provides is elaborated below.
Embodiment eight,
The embodiment of the invention eight is instantiations that the downstream signal treatment facility that utilizes the embodiment of the invention five and embodiment seven to provide is realized the downlink signal processing method of the correspondence that the embodiment of the invention four and embodiment six provide, and the system architecture that the embodiment of the invention eight provides is as shown in Figure 3.This system architecture is applicable in the shared compartment system of multiple communication network that said communication network can be any communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN.
At the communication system network element; When the downstream signal that sends like the TD-SCDMA base station need carry out indoor covering; Can through with the opposite process of TD-SCDMA terminal uplink signal transmissions, realize the indoor covering of the downstream signal that send the TD-SCDMA base station through many antennas.
As shown in Figure 3; The antenna that is used to transmit the downstream signal that sends the TD-SCDMA base station is identical with the antenna of the upward signal that is used to transmit the transmission of TD-SCDMA terminal, is 1 vertical polarized antenna oscillator and 1 horizontally-polarized antenna oscillator in the a-quadrant dual polarization antenna radiation node 1.
The downstream signal that the TD-SCDMA base station is sent is divided into 2 the tunnel, through 1 vertical polarized antenna oscillator and 1 descending covering of horizontally-polarized antenna Harmonic Oscillators.
More excellent, can be through at least a covering quality that improves downstream signal in following two kinds of methods:
First kind, through the antenna selection mode, select an optimum antenna subset of downstream signal transmission quality, and come to send downstream signal to the terminal through the antenna in the antenna subset of selecting.
Concrete; Before downstream signal is sent at the terminal, can carry out alternately the feedback information that utilizes the terminal to send with the terminal in the base station; Confirm the position at place, terminal, thereby it is optimum to confirm to select which antenna transmission downstream signal will make to the downstream signal transmission quality at this terminal.As; The antenna that can be used for sending downstream signal is respectively antenna 1, antenna 2, according to the terminal location of determining, determines and utilizes antenna 1 to send downstream signal; With making that the descending covering quality to this terminal is optimum, then can send downstream signal to said terminal through antenna 1.
Said first method can effectively be improved the coverage effect of downstream signal, enlarges the coverage of communication system downstream signal, overcomes in the signal downlink transmission course problem that the frequency electromagnetic waves penetration capacity weakens.
Second kind, when at least two these downstream signals of antenna transmission, the amplitude and the phase place of the downstream signal that transmits in each antenna port are carried out weighting.
Concrete; Be used for the base station when the antenna of downlink communication is carried out at the terminal determining many; In the base station before downstream signal is sent at the terminal; Can carry out alternately with the terminal, the feedback information that utilizes the terminal to send is confirmed the position that the terminal belongs to; Thereby determine the useful signal that this terminal can receive and the direction of interference signal; Amplitude and phase place to the downstream signal of (the corresponding antenna of antenna port) transmission in each antenna port are carried out weighting, the signal on the direction of useful signal of the downstream signal after the weighted superposition that the terminal can receive strong (greater than first threshold value of setting), signal weak (less than second threshold value of setting) on the direction of interference signal.
Said at least two antennas in the second approach can be the antennas that utilizes in the antenna subset that first method selects, and also can be the antennas of selecting arbitrarily that can be used for base station and terminal communication.
Said second method can form the antenna beam skew, strengthens the covering quality at descending covering dead angle in traditional downlink transmission process, reduces in the covering that does not need on region covered or the interference radiating way, effectively improves network overlapping effect.
Special; To LTE system and wlan system; When the terminal of using LTE system or wlan system is sent upward signal or received downstream signal, and utilize dual polarized antenna to receive and when sending LTE signal or WLAN signal, when promptly 1 vertical polarized antenna oscillator and 1 horizontally-polarized antenna oscillator integrate common reception and send LTE signal or WLAN signal; Because dual polarized antenna satisfies the low characteristics of correlation; Therefore dual polarized antenna can directly use as the MIMO antenna, when improving antenna uplink and descending covering quality, further improves the up and downlink transmission data rate of antenna.
The technical scheme that provides through the embodiment of the invention one to embodiment eight; In the shared indoor distributed system of multiple communication network; Said communication network can to each communication network, not only can strengthen the up covering quality of its signal for any communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN; Simultaneously; Can also strengthen the descending covering quality of its signal to a certain extent, and when upward signal waiting for transmission or downstream signal belong to LTE or wlan system, can also utilize dual polarized antenna to use the MIMO antenna technology to improve the transmission rate of upstream or downstream data.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. upward signal processing method is applied to it is characterized in that this method comprises in the shared indoor distributed system of multi communication network:
Uplink process to every kind of communication network; From domestic aerial, select to have the M root domestic aerial of common covering frequency range; Wherein, The polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the said M root domestic aerial, or the polarization mode of said M root domestic aerial is identical, and said M is the integer greater than 1;
The M root domestic aerial that utilization is determined receives upward signal;
The said upward signal in M road of M root domestic aerial diversity reception is merged into capable on the way signal;
Wherein, said domestic aerial is a single-polarized antenna, or any single-polarized antenna oscillator in the multi-polarization antenna.
2. the method for claim 1 is characterized in that, the polarization mode quadrature comprises following situation:
+ 45 degree polarization modes and-45 degree polarization modes, or horizontal polarization mode and perpendicular polarization mode.
3. the method for claim 1 is characterized in that, the said upward signal in M road that said M root domestic aerial receives is through N channel transfer, and said N is the integer that is not more than M.
4. the method for claim 1; It is characterized in that; During the polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in M root domestic aerial and the M root domestic aerial; The M road upward signal that M root domestic aerial receives is respectively merged into capable on the way signal, specifically comprises:
In M root domestic aerial, the upward signal that the domestic aerial that adopts the equipolarization mode is received tentatively merges;
The upward signal that obtains after merging in preliminary is merged into capable on the way signal once more.
5. the method for claim 1 is characterized in that, when the upward signal of domestic aerial reception was the GSM signal, said M root domestic aerial was a M root vertical polarized antenna.
6. upward signal treatment facility is applied to it is characterized in that this equipment comprises in the shared indoor distributed system of multi communication network:
The antenna selected cell; Be used for uplink process to every kind of communication network; From domestic aerial, select to have the M root domestic aerial of common covering frequency range; Wherein, the polarization mode quadrature of other at least one domestic aerial in the polarization mode of arbitrary domestic aerial in the said M root domestic aerial and the said M root domestic aerial, or the polarization mode of said M root domestic aerial is identical; Said M is the integer greater than 1, and said domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or the multi-polarization antenna;
Signal receiving unit is used to utilize the M root domestic aerial of determining to receive upward signal;
The signal merge cells is used for the said upward signal in M road of M root domestic aerial diversity reception is merged into capable on the way signal.
7. equipment as claimed in claim 6 is characterized in that,
Said signal receiving unit, the said upward signal in M road that specifically is used for M root domestic aerial is received is through N channel transfer, and said N is the integer that is not more than M.
8. equipment as claimed in claim 6 is characterized in that,
Said signal merge cells; Specifically be used for when the polarization mode quadrature of the polarization mode of arbitrary domestic aerial of M root domestic aerial and other at least one domestic aerial in the M root domestic aerial; The upward signal that the domestic aerial that adopts the equipolarization mode in the M root domestic aerial is received tentatively merges, and the upward signal that will obtain after will tentatively merging is merged into capable on the way signal once more.
9. downlink signal processing method is applied to it is characterized in that this method comprises in the shared indoor distributed system of multi communication network:
To the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
Confirm that coverage comprises the domestic aerial of said positional information, from the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition;
The domestic aerial that utilization is selected sends downstream signal to said terminal.
10. method as claimed in claim 9 is characterized in that, when the quantity of the domestic aerial of selecting is many, and before downstream signal was sent at said terminal, said method also comprised:
To the every domestic aerial of selecting; Amplitude and phase place to downstream signal to be sent in the antenna port in this domestic aerial are carried out weighting; Downstream signal to be sent add temporary form wave beam skew after, the interference value between the said domestic aerial of transmission of downlink signal is less than threshold value;
The domestic aerial that utilization is selected sends downstream signal to said terminal, specifically comprises:
The domestic aerial that utilization is selected sends the downstream signal behind amplitude and the phase weighting.
11. a downstream signal treatment facility is applied to it is characterized in that this equipment comprises in the shared indoor distributed system of multi communication network:
Receiving element is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback;
Antenna is confirmed the unit; Be used for confirming that coverage comprises the domestic aerial of said positional information; From the said domestic aerial of confirming, be chosen in the represented position of said positional information, the transmission quality of downstream signal satisfies at least one domestic aerial that imposes a condition;
Transmitting element is used to utilize the domestic aerial of selecting to send downstream signal to said terminal.
12. equipment as claimed in claim 11 is characterized in that, this equipment also comprises:
Adjustment unit; Be used for when the quantity of the domestic aerial of selecting is many; To the every domestic aerial of selecting; Amplitude and phase place to downstream signal to be sent in the antenna port in this domestic aerial are carried out weighting, downstream signal to be sent add temporary form wave beam skew after, the interference value between the said domestic aerial of transmission of downlink signal is less than threshold value;
Said transmitting element specifically is used to utilize the downstream signal after the domestic aerial of selecting sends amplitude and phase weighting.
13. a downlink signal processing method is applied to it is characterized in that this method comprises in the shared indoor distributed system of multi communication network:
To the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
To every domestic aerial in the many domestic aerials; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the said domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of the represented position of said positional information and imposes a condition;
Utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
14. a downstream signal treatment facility is applied to it is characterized in that this equipment comprises in the shared indoor distributed system of multi communication network:
Receiving element is used for the downlink transmission process to every kind of communication network, the positional information of receiving terminal feedback;
Adjustment unit; Be used for every domestic aerial to many domestic aerials; Amplitude and phase place to downstream signal to be sent in the antenna port are carried out weighting, and the said domestic aerial that sends the downstream signal after the weighting satisfies at the transmission quality of the downstream signal of the represented position of said positional information and imposes a condition;
Transmitting element is used to utilize the downstream signal after said many domestic aerials send amplitude and phase weighting.
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| CN201410218580.1A CN103997750B (en) | 2011-01-10 | 2011-01-10 | A kind of downlink signal processing method and equipment of indoor shared by multiple systems |
| CN201110003806.2A CN102595432B (en) | 2011-01-10 | 2011-01-10 | Indoor multisystem-shared uplink and downlink signal processing method and device for the same |
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| CN201110003806.2A CN102595432B (en) | 2011-01-10 | 2011-01-10 | Indoor multisystem-shared uplink and downlink signal processing method and device for the same |
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