CN103997750A - Indoor multisystem-shared downlink signal processing method and device - Google Patents
Indoor multisystem-shared downlink signal processing method and device Download PDFInfo
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Abstract
The embodiment of the invention provides an indoor multisystem-shared downlink signal processing method and a device. The method and device are applied to an indoor distributed system shared by multiple communication networks. The method includes the steps that for the downlink transmission process of each communication network, position information fed back by a terminal is received; indoor antennas covering the position of the terminal are determined, and at least one indoor antenna is selected from the determined indoor antennas in the position represented by the position information, wherein the transmission quality of downlink signals of the selected antennas meets a preset condition; the selected indoor antennas are used for sending the downlink signals to the terminal. According to the provided downlink signal processing scheme, in the indoor distributed system shared by the multiple communication networks, for the terminal using each communication network, at least one antenna with the best coverage quality in the position where the terminal is located is selected for downlink coverage, and therefore the downlink coverage quality of the communication networks is improved.
Description
The present patent application be that on 01 10th, 2011, application number are 201110003806.2 the applying date, the dividing an application of patent application that denomination of invention is " a kind of up, downlink signal processing method of indoor shared by multiple systems and equipment ".
Technical field
The present invention relates to the communications field, relate in particular to a kind of downlink signal processing method and equipment of indoor shared by multiple systems.
Background technology
Be accompanied by the development of communication network, 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.
2G system (as, cdma system and gsm system) electromagnetic wave that frequency of utilization is 824～960MHz, this electromagnetic wave penetration capacity is stronger, and indoor signal is better.3G system (as, CDMA2000 system, WCDMA system and TD-SCDMA system) mostly frequency of utilization be the electromagnetic wave of 2000MHz left and right, the ability that this electromagnetic wave penetrates building a little less than, indoor signal is poor with respect to 2G system.And the further raising of the wave frequency using along with communication system (as, LTE system), the ability that this electromagnetic wave penetrates building further weakens, and indoor signal will form more blind area with respect to 3G system.At present indoor distributed system adopts the method for omni directional monopoles antenna more, but the raising of the wave frequency using along with communication system, the coverage distance of omni directional monopoles antenna is shorter, can not meet the covering quality requirement of indoor signal transmission.
The method of traditional indoor covering quality of lifting communication network, mainly by improving the descending covering quality of communication network, improves communication network at indoor covering quality as increased the number of nodes of domestic aerial or the transmitting power of increase antenna for base station etc.
The uplink communication quality that improves communication network generally realizes by increasing the method for the transmitting power of terminal antenna, but the power limited transmitting due to terminal, by increasing terminal transmit power, improve the ability that terminal transmits and be restricted, cause the up covering quality of communication network poor, often occur that terminal can receive the downstream signal that base station sends, the object network element of terminal uplink communication, as base station but cannot receive the upward signal of terminal transmission or the poor situation of quality of uplink signal receiving.
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 be subject to the restriction of base station power capacity and electromagnetic radiation intensity, and the descending coverage of communication network is still limited, and in some region, descending covering quality is poor and can not solve the problem that covers dead angle;
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, not can solve and covers the problem at dead angle and the poor problem of descending covering quality in some region.Particularly, under the situation of shared by multiple systems, because the frequency of each system is different, the scope difference of covering is very large, if increase the number of nodes of antenna, indivedual regions multinode in low frequency system repeats covering and causes the generation that disturb adjacent area.
Therefore, need badly and introduce the signal processing scheme that improves uplink and downlink signals transmission quality under a kind of shared by multiple systems situation.
Summary of the invention
The embodiment of the present invention provides a kind of upward signal processing method and equipment of indoor shared by multiple systems, for solving existing communication network, and the poor problem of quality of uplink signal that base station receives.
A upward signal processing method, is applied in the shared indoor distributed system of multi communication network, and the method comprises:
Uplink process for 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 described M root domestic aerial and described M root domestic aerial, or the polarization mode of described M root domestic aerial is identical, described M is greater than 1 integer;
The M root domestic aerial that utilization is determined receives upward signal;
Upward signal described in the M road of M root domestic aerial diversity reception is merged into row signal on the way;
Wherein, described domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or multi-polarization antenna.
A upward signal treatment facility, is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
Antenna selected cell, for the uplink process for 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 described M root domestic aerial and described M root domestic aerial, or the polarization mode of described M root domestic aerial is identical, described M is greater than 1 integer, and described domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or multi-polarization antenna;
Signal receiving unit, for utilizing the M root domestic aerial of determining to receive upward signal;
Signal merge cells, for merging into row signal on the way by upward signal described in the M road of M root domestic aerial diversity reception.
In the scheme that the upward signal that the embodiment of the present invention provides is processed, in the shared indoor distributed system of multiple communication network, for the terminal of using every kind of communication network, when this terminal need to send upward signal, all can select jointly to cover at least two domestic aerials of this upward signal place frequency range, by space diversity or the polarization diversity of at least two domestic aerials selecting, the upward signal that at least two domestic aerials selecting are received is respectively merged into row signal on the way, thereby utilize diversity gain, the quality of the upward signal that raising base station receives.
The embodiment of the present invention provides a kind of downlink signal processing method and equipment of indoor shared by multiple systems, for solving existing communication network, the problem that the descending covering quality of base station signal is poor.
A downlink signal processing method, is applied in the shared indoor distributed system of multi communication network, and the method comprises:
For the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
Determine the domestic aerial that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition;
The domestic aerial that utilization is selected sends downstream signal to described terminal.
A downstream signal treatment facility, is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
Receiving element, for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback;
Antenna determining unit, for the domestic aerial of determining that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition;
Transmitting element, for utilizing the domestic aerial of selecting to send downstream signal to described terminal.
In the scheme that the downstream signal that the embodiment of the present invention provides is processed, in the shared indoor distributed system of multiple communication network, for the terminal of using every kind of communication network, by selecting terminal position, locate, at least one antenna of covering quality optimum carries out descending covering, thereby improves the descending covering quality of communication network.
The embodiment of the present invention provides a kind of downlink signal processing method and equipment of indoor shared by multiple systems, and for solving existing communication network, the descending covering of base station signal exists the problem that covers dead angle.
A downlink signal processing method, is applied in the shared indoor distributed system of multi communication network, and the method comprises:
For the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
For every domestic aerial in many domestic aerials, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of the represented position of described positional information;
Utilize described many domestic aerials to send the downstream signal after amplitude and phase weighting.
A downstream signal treatment facility, is applied in the shared indoor distributed system of multi communication network, and this equipment comprises:
Receiving element, for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback;
Adjustment unit, for the every domestic aerial for many domestic aerials, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of the represented position of described positional information;
Transmitting element, for utilizing described many domestic aerials to send the downstream signal after amplitude and phase weighting.
In the scheme that the downstream signal that the embodiment of the present invention provides is processed, in the shared indoor distributed system of multiple communication network, for each communication network, amplitude and the phase place of the downstream signal that the port of the many antennas for transmission of downlink signal is transmitted are weighted, and utilize the downstream signal after antenna transmission weighting to realize descending covering, by the skew of horizontal beam, strengthen the descending covering of required direction, solve the problem at descending covering dead angle.
The scheme providing by the embodiment of the present invention, makes for each communication network, during as random 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 mimo antennas technology to improve uplink and downlink coverage and the transmission rate of indoor distributed system at LTE with in having applied the wlan system of 802.11n standard.Therefore, the present invention not only can application simultaneously can also smoothly be applied to LTE system in 2G, 3G and wlan system, has and covers current all indoor distributed system functions simultaneously.
Accompanying drawing explanation
The flow chart of steps of a kind of upward signal processing method that Fig. 1 provides for the embodiment of the present invention one;
The structural representation of a kind of upward signal treatment facility that Fig. 2 provides for the embodiment of the present invention two;
A kind of system architecture schematic diagram that Fig. 3 provides for the embodiment of the present invention three and embodiment eight;
The flow chart of steps of a kind of downlink signal processing method that Fig. 4 provides for the embodiment of the present invention four;
The structural representation of a kind of downstream signal treatment facility that Fig. 5 provides for the embodiment of the present invention five;
The flow chart of steps of a kind of downlink signal processing method that Fig. 6 provides for the embodiment of the present invention six;
The structural representation of a kind of downstream signal treatment facility that Fig. 7 provides for the embodiment of the present invention seven.
Embodiment
Below in conjunction with Figure of description and each embodiment, technical solution of the present invention is described.
Embodiment mono-,
The embodiment of the present 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 the method as shown in Figure 1, specifically comprises the following steps:
Step 101, selection have at least two domestic aerials of common covering frequency range.
In various embodiments of the present invention, described domestic aerial can be each the single-polarized antenna oscillator in single-polarized antenna and/or multi-polarization antenna.
In the shared indoor distributed system of multiple communication network, described communication network can be GSM, CDMA, WCDMA, TD-SCDMA, the random communication network such as LTE and WLAN, the upward signal sending for any one terminal of using a certain communication network, according to the frequency range at this upward signal place, determine and cover M (M is greater than 1 integer) the root domestic aerial that frequency range includes this upward signal place frequency range, and, the polarization mode of arbitrary domestic aerial in described M root domestic aerial and the polarization mode quadrature of other at least one domestic aerial in M root domestic aerial, or the polarization mode of described M root domestic aerial is identical.
Wherein, the polarization mode of quadrature 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.
Especially, when the terminal of using GSM900MHz and CDMA800MHz system sends upward signal, the frequency of the frequency range covering due to system is lower, is generally 820MHz～960MHz, and therefore, general using vertical polarized antenna receives this upward signal.
The polarization mode of arbitrary domestic aerial in described M root domestic aerial and the polarization mode quadrature of other at least one domestic aerial in M root domestic aerial have two kinds of situations:
The first 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 wherein there is 1 horizontally-polarized antenna and 1 vertical polarized antenna of polarization mode quadrature, in this case, can be according to polarization diversity principle, utilize polarization diversity gain, utilize respectively this 2 antenna reception upward signals.
The second situation, antenna amount corresponding at least one polarization mode are greater than 1, as determine the frequency range that 3 antennas have common covering, and wherein there are 1 horizontally-polarized antenna and 2 vertical polarized antennas of 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 respectively this 3 antenna reception upward signals.
The domestic aerial that step 102, utilization are determined receives upward signal.
After determining the M root domestic aerial that uses the upward signal that the terminal of a certain communication network sends for receiving, the upward signal sending for any one terminal, utilizes respectively every domestic aerial in the M root domestic aerial of determining to receive this upward signal.
Described in the M road that described M root domestic aerial receives, upward signal can pass through N channel transfer, and described N is the integer that is not more than M.
Step 103, the M road upward signal of the M root domestic aerial diversity reception of determining is merged into row signal on the way.
The specific implementation process of this step is: by the M road upward signal of the M root domestic aerial diversity reception of determining, respectively by corresponding channel transfer, and finally merge into row signal on the way.
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 M root domestic aerial, the M road upward signal that M root domestic aerial is received is respectively merged into row signal on the way, specifically comprises:
In M root domestic aerial, the upward signal that the domestic aerial that adopts equipolarization mode is received tentatively merges, and the upward signal obtaining after tentatively merging is merged into row signal on the way again.
When the polarization mode of M root domestic aerial is identical, the M road upward signal that M root domestic aerial is received is respectively merged into row signal on the way, specifically comprises:
The M road upward signal that M root domestic aerial is received is respectively merged into row signal on the way.
Embodiment bis-,
The embodiment of the present invention two provides a kind of upward signal treatment facility, be applied in the shared indoor distributed system of multi communication network, as shown in Figure 2, this equipment comprises antenna selected cell 11, signal receiving unit 12 and signal merge cells 13 to the structural representation of this equipment, wherein:
Antenna selected cell 11 is for the uplink process for 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 described M root domestic aerial and described M root domestic aerial, or the polarization mode of described M root domestic aerial is identical, described M is greater than 1 integer;
Signal receiving unit 12 is for utilizing the M root domestic aerial of determining to receive upward signal; Signal merge cells 13 is for merging into row signal on the way by upward signal described in the M road of M root domestic aerial diversity reception;
Wherein, described domestic aerial is each the single-polarized antenna oscillator in single-polarized antenna and/or multi-polarization antenna.
Described signal receiving unit 12 is specifically for upward signal described in the M road that M root domestic aerial is received by N channel transfer, and described N is the integer that is not more than M.
Described signal merge cells 13 is during specifically for the polarization mode of arbitrary domestic aerial in M root domestic aerial and the polarization mode quadrature of other at least one domestic aerial in M root domestic aerial, the upward signal that the domestic aerial that adopts equipolarization mode in M root domestic aerial is received tentatively merges, and the upward signal obtaining after tentatively merging is merged into row signal on the way again.
When described signal merge cells 13 is identical specifically for the polarization mode at M root domestic aerial, the M road upward signal that M root domestic aerial is received is respectively merged into row signal on the way.
The technical scheme embodiment of the present invention one and embodiment bis-being provided below by a concrete example is elaborated.
Embodiment tri-,
The embodiment of the present invention three is to utilize upward signal treatment facility that the embodiment of the present invention two provides to realize the instantiation of the upward signal processing method that the embodiment of the present invention one provides, and the system architecture that the embodiment of the present invention three provides as shown in Figure 3.This system architecture is applicable in the shared indoor distributed system of multiple communication network, and described communication network can be the random communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN.
The shared indoor distributed system of LTE system, gsm system and TD-SCDMA system of take respectively is below example, and the system architecture in embodiment tri-is described.
As shown in Figure 3, shared indoor distributed system is distributed in a-quadrant, B region, C region, it is distant that A/B/C region is separated by, can be the different floors in same building thing depending on A/B/C region, the coverage condition of describing different poliarizing antennas has been classified in this case as, at A, B, C region has adopted the antenna of different polarization to cover, and under actual conditions in same building thing the general antenna that adopts equipolarization type, in whole domestic aerials of laying in a-quadrant, there is the antenna in 3 dual polarization antenna radiation nodes, each dual polarization antenna radiation node comprises 1 vertical polarized antenna oscillator and 1 horizontally-polarized antenna molecular dual polarized antenna that shakes, vertical polarized antenna oscillator can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range, horizontally-polarized antenna can cover 1710MHz～2700MHz frequency range, in whole domestic aerials of laying in B region, exist the antenna in 3 vertical polarized antenna radiation nodes can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range, and, in each vertical polarized antenna radiation node, be laid with two vertical polarized antennas that have a determining deviation (general spacing is 2～10 λ, and λ is wavelength), in whole domestic aerials of laying in C region, exist the antenna in 3 ± 45 ° poliarizing antenna radiation nodes can cover 820MHz～960MHz, 1710MHz～2700MHz frequency range, and, in each aerial radiation node, be integrated with 1+45 ° poliarizing antenna oscillators and 1-45 ° of poliarizing antenna molecular dual polarized antenna that shakes.
A-quadrant take below as example, during indoor distributed system in shared by multiple systems a-quadrant, to TD-SCDMA terminal and LTE terminal, use the process of this indoor distributed system to describe.
When TD-SCDMA terminal need to send upward signal, take use frequency range as 1880～1920MHz and 2010～2025MHz be example, antenna selected cell need to select jointly to cover many domestic aerials of 1880～1920MHz and 2010～2025MHz frequency range from domestic aerial.
As shown in Figure 3, in 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, in a-quadrant, each node has 2 antennas can cover 1880～1920MHz and 2010～2025MHz frequency range, therefore, 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.
Signal receiving unit is determined for receiving after 2 domestic aerials (antenna oscillator) of the upward signal that this TD-SCDMA terminal sends at antenna selected cell, utilizes 2 domestic aerials determining to receive respectively the upward signal that this TD-SCDMA terminal sends.
Signal merge cells when confirmation signal receiving element receives upward signal, by 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 respectively by channel transfer separately.
By horizontally-polarized antenna oscillator accordingly in passage and vertical polarized antenna oscillator accordingly in passage respectively the upward signal of transmission jointly send to the object TD-SCDMA network element of TD-SCDMA terminal uplink signal transmissions, as TD-SCDMA base station, and through twin-channel RRU, BBU transmission, finally in base station, merge into row signal on the way, this object TD-SCDMA network element is merged into 1 tunnel to the upward signal receiving, realization utilizes 1 dual polarized antenna that is integrated with 1 horizontally-polarized antenna oscillator and 1 vertical polarized antenna oscillator jointly to receive the upward signal that TD-SCDMA terminal sends.According to polarization diversity principle, utilize polarization diversity gain, strengthen the quality of uplink signal transmissions.
When LTE terminal need to send upward signal, the terminal of take use frequency range as 2300MHz～2400MHz be example, 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 MIMO antenna technology to improve covering quality and the message transmission rate of network, concrete application process, the present invention repeats no more.
B region take below as example, during indoor distributed system in shared by multiple systems B region, to GSM terminal, use the process of this indoor distributed system to describe.
When GSM terminal need to send upward signal, the frequency range that GSM900MHz system is used is 880MHz～960MHz, and, antenna selected cell need to select to cover the domestic aerial of 880MHz～960MHz frequency range from domestic aerial.
As shown in Figure 3, in B region, having in a vertical polarized antenna radiation node has 2 vertical polarized antennas can cover 820MHz～960MHz frequency range, therefore, antenna selected cell can be selected 2 vertical polarized antennas that cover 820MHz～960MHz frequency range from any one radiation node in B region.
Signal receiving unit is determined for receiving after 2 domestic aerials of the upward signal that this GSM terminal sends at antenna selected cell, utilizes 2 domestic aerials determining to receive the upward signal that this GSM terminal sends, and by channel transfer upward signal.
The upward signal transmitting in this passage is sent to the object GSM network element of GSM terminal uplink signal transmissions, as GSM base station, realize and utilize 2 vertical polarized antennas to receive the upward signal that GSM terminal sends.
When if GSM terminal sends upward signal in a-quadrant, select the vertical polarized antenna oscillator that meets coverage condition to receive upward signal.
Similar with a-quadrant when C region covers, with same node integrated+dual polarized antenna of the dual polarized antenna replacement of 45 ° of poliarizing antenna oscillators and-45 ° of poliarizing antenna oscillators is integrated horizontally-polarized antenna oscillator and vertical polarized antenna oscillator.
Embodiment tetra-,
The embodiment of the present 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 the method as shown in Figure 4, specifically comprises the following steps:
The positional information of step 201, receiving terminal feedback.
At communication network element, in the time of need to sending downstream signal to terminal as base station, need to communicate with terminal the positional information of receiving terminal feedback, thereby the position at definite terminal place.
Described terminal can be one, also can be for a plurality of, and described position can be the position at a terminal place, can be also the band of position at a plurality of terminals place.
Step 202, be identified for the antenna of transmission of downlink signal.
Determine the domestic aerial that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition.
The transmission quality of described downstream signal can be determined for representing the parameter of communication quality by least one, the transmission quality of described downstream signal meet impose a condition refer to described at least one for representing that the parameter of communication quality meets, impose a condition, as signal strength signal intensity is greater than the threshold value of setting.
The antenna that step 203, utilization are selected sends downstream signal.
At least one domestic aerial that utilization is selected sends downstream signal to described terminal.
When the antenna amount of determining in step 202 is many, after step 202, and before step 203, described method also comprises step 202 ＇:
Step 202 ＇, the amplitude of downstream signal to be sent and phase place are weighted.
This step specifically comprises, for the every domestic aerial of selecting, the amplitude of downstream signal to be sent in the antenna port in this domestic aerial and phase place are weighted, after downstream signal weighting to be sent, form wave beam skew and make the interference value between described domestic aerial be less than threshold value.
By step 202 ＇, can reduce the interference between antenna, and can also further strengthen the upward signal covering quality on specific direction by the scheme of this step.
Embodiment five,
The embodiment of the present 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 as shown in Figure 5, specifically comprises receiving element 21, antenna determining unit 22 and transmitting element 23, wherein:
Receiving element 21 is for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback; The domestic aerial of antenna determining unit 22 for determining that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition; Transmitting element 23 is for utilizing the domestic aerial of selecting to send downstream signal to described terminal.
This equipment also comprises adjustment unit 24:
When adjustment unit 24 is many for the quantity of the domestic aerial selecting, for the every domestic aerial of selecting, the amplitude of downstream signal to be sent in the antenna port in this domestic aerial and phase place are weighted, downstream signal to be sent adds and temporary forms after wave beam skew, and the interference value between the described domestic aerial of transmission of downlink signal is less than threshold value.
Described transmitting element 23 is specifically for utilizing the domestic aerial of selecting to send the downstream signal after amplitude and phase weighting.
Embodiment six,
The embodiment of the present 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 the method as shown in Figure 6, specifically comprises the following steps:
The positional information of step 301, receiving terminal feedback.
Identical with the embodiment of the present invention four, at communication network element, in the time of need to sending downstream signal to terminal as base station, also need to communicate with terminal the positional information of receiving terminal feedback, thereby the position at definite terminal place.
Step 302, the amplitude of downstream signal and phase place are weighted.
The every domestic aerial for the many domestic aerials for to described terminal transmission downstream signal, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the described domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of described position.
As, making after downstream signal weighting to be sent, the interference value of described domestic aerial in described position is less than threshold value or the downstream signal intensity on specific direction is greater than set point.
Downstream signal after step 303, transmission are adjusted.
Utilize described many domestic aerials to send the downstream signal after amplitude and phase weighting.
Embodiment seven,
The embodiment of the present 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 as shown in Figure 7, specifically comprises receiving element 31, adjustment unit 32 and transmitting element 33, wherein:
Receiving element 31 is for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback; Adjustment unit 32 is for the every domestic aerial for many domestic aerials, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the described domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of the represented position of described positional information; Transmitting element 33 is for utilizing described many domestic aerials to send the downstream signal after amplitude and phase weighting.
The technical scheme embodiment of the present invention four～embodiment seven being provided below by a concrete example is elaborated.
Embodiment eight,
The embodiment of the present invention eight is instantiations that the downstream signal treatment facility that utilizes the embodiment of the present invention five and embodiment seven to provide is realized the corresponding downlink signal processing method that the embodiment of the present invention four and embodiment six provide, and the system architecture that the embodiment of the present invention eight provides as shown in Figure 3.This system architecture is applicable in the shared compartment system of multiple communication network, and described communication network can be the random communication network such as GSM, CDMA, WCDMA, TD-SCDMA, LTE and WLAN.
At communication system network element, in the time of need to carrying out indoor covering as the downstream signal of TD-SCDMA base station transmission, can, by the process contrary with TD-SCDMA terminal uplink signal transmissions, by many antennas, realize the indoor covering of the downstream signal of TD-SCDMA base station transmission.
As shown in Figure 3, for the antenna that transmits the downstream signal that TD-SCDMA base station sends, with identical for transmitting the antenna of upward signal of TD-SCDMA terminal transmission, be 1 vertical polarized antenna oscillator and 1 horizontally-polarized antenna oscillator in a-quadrant dual polarization antenna radiation node 1.
The downstream signal that TD-SCDMA base station is sent is divided into 2 tunnels, by 1 vertical polarized antenna oscillator and 1 descending covering of horizontally-polarized antenna Harmonic Oscillators.
Preferably, can improve the covering quality of downstream signal by least one in following two kinds of methods:
The first, by antenna selection mode, select an antenna subset of downstream signal transmission quality optimum, and come to send downstream signal to terminal by the antenna in the antenna subset of selecting.
Concrete, before base station sends downstream signal to terminal, can carry out alternately with terminal the feedback information that utilizes terminal to send, determine the position at terminal place, thereby determine and select which antenna to send downstream signal by the downstream signal transmission quality optimum making 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, by making, the descending covering quality for this terminal is optimum, can to described terminal, send downstream signal by antenna 1.
Described first method can effectively be improved the coverage effect of downstream signal, expands the coverage of communication system downstream signal, overcomes in signal downlink transmitting procedure the problem that frequency electromagnetic waves penetration capacity weakens.
The second, when at least two these downstream signals of antenna transmission, the amplitude of the downstream signal transmitting in each antenna port and phase place are weighted.
Concrete, determining many while carrying out the antenna of downlink communication for base station to terminal, before base station sends downstream signal to terminal, can carry out alternately with terminal, the feedback information that utilizes terminal to send, determine the position at terminal place, thereby determine useful signal that this terminal can receive and the direction of interference signal, amplitude and phase place to the downstream signal of (a corresponding antenna of antenna port) transmission in each antenna port are weighted, downstream signal after the weighted superposition that terminal can receive is signal strong (being greater than the first threshold value of setting) in the direction of useful signal, signal weak (being less than the second threshold value of setting) in the direction of interference signal.
Described at least two antennas in the second approach can be the antennas utilizing in the antenna subset that first method selects, can be also select arbitrarily can be for the antenna of base station and terminal communication.
Described second method can form antenna beam skew, strengthens the covering quality at descending covering dead angle in traditional downlink transmission process, reduces in the region that does not need to cover or the covering on interference radiating way, effectively improves network overlapping effect.
Especially, for LTE system and wlan system, when using the terminal of LTE system or wlan system send upward signal or receive downstream signal, and when utilizing dual polarized antenna to receive and sending LTE signal or WLAN signal, when 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 meets the feature that correlation is low, therefore dual polarized antenna can directly be used as MIMO antenna, when improving antenna uplink and descending covering quality, further improve the up and downlink transmission data rate of antenna.
The technical scheme providing by the embodiment of the present invention one to embodiment eight, in the shared indoor distributed system of multiple communication network, described communication network can be GSM, CDMA, WCDMA, TD-SCDMA, the random communication network such as LTE and WLAN, for each communication network, not only can strengthen the up covering quality of its signal, simultaneously, can also strengthen to a certain extent the descending covering quality of its signal, and when upward signal waiting for transmission or downstream signal belong to LTE or wlan system, can also utilize dual polarized antenna with 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 and not depart 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 the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (6)
1. a downlink signal processing method, is applied to, in the shared indoor distributed system of multi communication network, it is characterized in that, the method comprises:
For the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
Determine the domestic aerial that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition;
The domestic aerial that utilization is selected sends downstream signal to described terminal.
2. the method for claim 1, is characterized in that, when the quantity of the domestic aerial of selecting is many, and before sending downstream signal to described terminal, described method also comprises:
For the every domestic aerial of selecting, the amplitude of downstream signal to be sent in the antenna port in this domestic aerial and phase place are weighted, downstream signal to be sent adds and temporary forms after wave beam skew, and the interference value between the described domestic aerial of transmission of downlink signal is less than threshold value;
The domestic aerial that utilization is selected sends downstream signal to described terminal, specifically comprises:
The domestic aerial that utilization is selected sends the downstream signal after amplitude and phase weighting.
3. a downstream signal treatment facility, is applied to, in the shared indoor distributed system of multi communication network, it is characterized in that, this equipment comprises:
Receiving element, for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback;
Antenna determining unit, for the domestic aerial of determining that coverage comprises described positional information, from the described domestic aerial of determining, be chosen in the represented position of described positional information, the transmission quality of downstream signal meets at least one domestic aerial imposing a condition;
Transmitting element, for utilizing the domestic aerial of selecting to send downstream signal to described terminal.
4. equipment as claimed in claim 3, is characterized in that, this equipment also comprises:
Adjustment unit, be used for when the quantity of the domestic aerial of selecting is many, for the every domestic aerial of selecting, the amplitude of downstream signal to be sent in the antenna port in this domestic aerial and phase place are weighted, downstream signal to be sent adds and temporary forms after wave beam skew, and the interference value between the described domestic aerial of transmission of downlink signal is less than threshold value;
Described transmitting element, specifically for utilizing the domestic aerial of selecting to send the downstream signal after amplitude and phase weighting.
5. a downlink signal processing method, is applied to, in the shared indoor distributed system of multi communication network, it is characterized in that, the method comprises:
For the downlink transmission process of every kind of communication network, the positional information of receiving terminal feedback;
For every domestic aerial in many domestic aerials, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the described domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of the represented position of described positional information;
Utilize described many domestic aerials to send the downstream signal after amplitude and phase weighting.
6. a downstream signal treatment facility, is applied to, in the shared indoor distributed system of multi communication network, it is characterized in that, this equipment comprises:
Receiving element, for the downlink transmission process for every kind of communication network, the positional information of receiving terminal feedback;
Adjustment unit, for the every domestic aerial for many domestic aerials, the amplitude of downstream signal to be sent in antenna port and phase place are weighted, send the described domestic aerial of the downstream signal after weighting satisfied the imposing a condition of transmission quality of the downstream signal of the represented position of described positional information;
Transmitting element, for utilizing described many domestic aerials to send the downstream signal after 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 Division 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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| WO2021258788A1 (en) * | 2020-06-22 | 2021-12-30 | 华为技术有限公司 | Terminal device, signal transmission method and baseband chip |
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| CN103997750B (en) | 2017-11-14 |
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