CN103516447B - A kind of multi-antenna signal merging method and network equipment - Google Patents
A kind of multi-antenna signal merging method and network equipment Download PDFInfo
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Abstract
The embodiment of the invention discloses multi-antenna signal merging method and network equipment, be applied to communication technical field.In the multi-antenna signal merging method of the present embodiment, network equipment can obtain network equipment respectively and receive the signal quality measured values that subscriber equipment transmits on multiple antennas, and the merging mode of the signal that multiple antenna receives is determined according to the difference of signal quality measured values and preset strategy, comprise at preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of the mode of merging; Then according to the merging mode determined, the signal that multiple antenna receives is merged.The signal quality that such dynamic ground is launched according to network equipment actual reception subscriber equipment, suitable merging mode is selected to merge the signal that network equipment receives on multiple antennas, make the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, the signal detection reliability obtained after final merging is higher.
Description
Technical field
The present invention relates to communication technical field, particularly multi-antenna signal merging method and network equipment.
Background technology
In existing mobile communication system, when subscriber equipment transmits upward signal on up transmitting channel, such network equipment can merge the upward signal received on multiple antennas, such as, at universal mobile telecommunications system (UniversalMobileTelecommunicationsSystem, UMTS) in, network equipment can pass through decode results alternative amalgamate, aerial signal multi-path combing or log-likelihood ratio (LoglikelihoodRatio, LLR) flow the merging modes such as Soft Inform ation merging and carry out multi-antenna signal merging.But the above-mentioned merging mode for multi-antenna signal be static configuration at network equipment, do not consider the factors such as the practical communication performance between subscriber equipment and the network equipment, after making to merge, the signal that obtains is not very accurate.
Summary of the invention
The embodiment of the present invention provides multi-antenna signal merging method and network equipment, makes the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, improves the accuracy of the input obtained after merging.
Embodiment of the present invention first aspect provides a kind of multi-antenna signal merging method, comprising:
Acquisition network equipment receives the signal quality measured values that subscriber equipment transmits on multiple antennas respectively;
Determine the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, comprise at described preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode;
According to the described merging mode determined, the signal that multiple antenna receives is merged.
The first of embodiment of the present invention first aspect may in implementation, describedly obtains before network equipment receives the signal quality measured values that subscriber equipment transmits on multiple antennas respectively, also comprises:
If the signal that described multiple antenna receives meets preset condition, then determine that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode;
If the signal that described multiple antenna receives does not meet preset condition, then perform described acquisition signal quality measured values and the step determining merging mode.
May implementation in conjunction with the first of embodiment of the present invention first aspect or first aspect, in the second possibility implementation of embodiment of the present invention first aspect, if get the signal quality measured values two antennas receiving described subscriber equipment and transmit, then determine the merging mode of the signal that described many strip antennas receive according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, specifically comprise:
If the difference of the signal quality measured values of Received signal strength is less than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge;
If the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is decode results alternative amalgamate.
May implementation in conjunction with the first of embodiment of the present invention first aspect or first aspect, in the third possibility implementation of embodiment of the present invention first aspect, if get the signal quality measured values N number of antenna receiving described subscriber equipment and transmit, described N be greater than 2 positive integer, then determine the merging mode of the signal that described many strip antennas receive according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, specifically comprise:
Described N number of antenna in the signal received select the signal that signal strength signal intensity is the strongest;
The merging mode of Part I signal in the signal that described N number of antenna receives is defined as aerial signal multi-path combing or the merging of log-likelihood ratio stream Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate;
Described Part I signal refers to the signal being less than preset threshold value with the difference of the signal quality measured values of the signal of described selection, and described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection.
In conjunction with the third possibility implementation of embodiment of the present invention first aspect, in the 4th kind of possibility implementation of embodiment of the present invention first aspect, the quantity of described Part I signal is in preset scope;
When the described quantity being less than the signal of preset threshold value exceedes preset scope, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
In conjunction with embodiment of the present invention first aspect the second may implementation may arbitrary implementation in implementation to the 4th kind, in the 5th kind of possibility implementation of embodiment of the present invention first aspect, described method also comprises: dynamically adjust described preset threshold value.
In conjunction with embodiment of the present invention first aspect or first aspect the first may implementation may arbitrary implementation in implementation to the 5th kind, in the 6th kind of possibility implementation of embodiment of the present invention first aspect, described signal quality measured values at least comprises following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal chip energy, upward signal symbol energy, down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy.
Embodiment of the present invention second aspect provides a kind of network equipment, comprising:
Signal quality acquiring unit, receives for obtaining network equipment respectively the signal quality measured values that subscriber equipment transmits on multiple antennas, and sends the signal quality measured values of described acquisition to merging mode determining unit;
Merging mode determining unit, on the multiple antennas obtained according to described signal quality acquiring unit, the difference of the signal quality measured values of Received signal strength and preset strategy determine the merging mode of the signal that described multiple antenna receives, and comprise: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode at described preset strategy;
Merge cells, merges the signal that multiple antenna receives for the merging mode determined according to described merging mode determining unit.
In the first possibility implementation of embodiment of the present invention second aspect, network equipment also comprises:
Described merging mode determining unit, if the signal also received on described multiple antenna meets preset condition, then determines that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode; If the signal that described multiple antenna receives does not meet preset condition, then the difference of the signal quality measured values obtained according to described signal quality acquiring unit and preset strategy determine the merging mode of the signal that described multiple antenna receives.
May implementation in conjunction with the first of embodiment of the present invention second aspect or second aspect, in the second possibility implementation of embodiment of the present invention second aspect, if described signal quality acquiring unit gets the signal quality measured values two antennas receiving described subscriber equipment and transmit, described merging mode determining unit, specifically comprises:
First merges determining unit, if the difference of the signal quality measured values of Received signal strength is less than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge;
Second merges determining unit, if the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on described two antennas, then determines that the merging mode of signal on described two antennas is decode results alternative amalgamate.
May implementation in conjunction with the first of embodiment of the present invention second aspect or second aspect, in the third possibility implementation of embodiment of the present invention second aspect, it is characterized in that, if described signal quality acquiring unit gets the signal quality measured values N number of antenna receiving described subscriber equipment and transmit, described N be greater than 2 positive integer, described merging mode determining unit, specifically comprises:
Signal first selected cell, selects the signal that signal strength signal intensity is the strongest in the signal received on described N number of antenna;
3rd merges determining unit, for the merging mode of Part I signal in the signal that N number of antenna receives being defined as aerial signal multi-path combing or the merging of log-likelihood ratio stream Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate;
Described Part I signal refers to that the difference of the signal quality measured values of the signal selected with described signal first selected cell is less than the signal of preset threshold value, and described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection.
In conjunction with the third possibility implementation of embodiment of the present invention second aspect, in the 4th kind of possibility implementation of embodiment of the present invention second aspect, the quantity of described Part I signal is in preset scope;
Described 3rd merges determining unit, also for when described in be less than the signal of preset threshold value quantity exceed preset scope time, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
In conjunction with embodiment of the present invention second aspect the second may implementation may arbitrary implementation in implementation to the 4th kind of second aspect, may in implementation at the 5th kind of embodiment of the present invention second aspect, network equipment also comprises:
Thresholding adjustment unit, for dynamically adjusting described preset threshold value.
In the multi-antenna signal merging method of the present embodiment, network equipment can obtain network equipment respectively and receive the signal quality measured values that subscriber equipment transmits on multiple antennas, and the merging mode of the signal that multiple antenna receives is determined according to the difference of the signal quality measured values of Received signal strength on multiple antenna and preset strategy, comprise at preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of the mode of merging; Then according to the merging mode determined, the signal that multiple antenna receives is merged.Adopt the signal quality that the method dynamic of the present embodiment ground is launched according to network equipment actual reception subscriber equipment, suitable merging mode is selected to merge the signal that network equipment receives on multiple antennas, make the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, the accuracy of the input obtained after final merging is higher.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of a kind of multi-antenna signal merging method that the embodiment of the present invention provides;
Fig. 2 is the flow chart of the another kind of multi-antenna signal merging method that the embodiment of the present invention provides;
Fig. 3 is the flow chart of the another kind of multi-antenna signal merging method that the embodiment of the present invention provides;
Fig. 4 is the flow chart of the another kind of multi-antenna signal merging method that the embodiment of the present invention provides;
Fig. 5 is the flow chart of the another kind of multi-antenna signal merging method that the embodiment of the present invention provides;
Fig. 6 is the structural representation of a kind of network equipment that the embodiment of the present invention provides;
Fig. 7 is the structural representation of the another kind of network equipment that the embodiment of the present invention provides;
Fig. 8 is the structural representation of the another kind of network equipment that the embodiment of the present invention provides;
Fig. 9 is the structural representation of the another kind of network equipment that the embodiment of the present invention provides;
Figure 10 is the structural representation of the another kind of network equipment that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of multi-antenna signal merging method, and be mainly used in the method that network equipment merges the signal that network equipment receives subscriber equipment transmitting on multiple antennas, flow chart as shown in Figure 1, specifically comprises:
Step 101, network equipment obtains this network equipment respectively and receives the signal quality measured values that subscriber equipment transmits on multiple antennas, wherein signal quality measured values be can weigh network equipment antenna on receive the information of the signal quality of signal, at least can include but not limited to following arbitrary parameter: upward signal symbol signal to noise ratio (SignaltoNoiseRatio, SIR), upward signal chip signal to noise ratio (EnergyChiptoSignalNoiseRatio, Ec/No), upward signal chip energy (EnergyofChip, Ec), upward signal symbol energy (Energyofsymbol, and down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy etc. Eb).
Step 102, network equipment determines the merging mode of the signal that multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on multiple antenna and preset strategy.
Wherein, the difference of signal quality measured values refers to that signal pin that network equipment receives on different antennas is to the difference of same signal quality measured values; Merging mode can include but not limited to following arbitrary merging mode: decode results alternative amalgamate, aerial signal multi-path combing and the merging of log-likelihood ratio stream Soft Inform ation etc.; The scope of the difference of signal quality measured values and the corresponding relation of the mode of merging is comprised at above-mentioned preset strategy, such as when the difference of signal quality measured values is in the scope being greater than preset threshold value, can corresponding decode results alternative amalgamate, select signal that decoding accuracy is larger as amalgamation result; If the difference of signal quality measured values is when being less than the scope of preset threshold value, when at this moment adopting aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation to merge, performance gain can much larger than the performance gain produced during decode results alternative amalgamate, then network equipment adopts aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation to merge.Wherein preset threshold value can be dynamically change, particularly, network equipment can upgrade this preset threshold value according to actual needs, and dynamically adjusts this preset threshold value according to the dynamic change such as network device internal resource status of the network equipment.
Wherein when network equipment is in step 101 obtain be down-bound pilot frequency signal chip noise or descending pilot frequency symbol energy time, be used to refer to descending pilot frequency quality, when performing step 102, terminal equipment can be received the difference of the descending pilot frequency quality of Liang Ge community by network equipment, be converted on each antenna in cell of network equipment and receive the difference that this terminal equipment sends the signal quality of signal, need the factor of input as poor in two cell downlink pilot tones in conversion process, two cell uplink reception antenna abilities, two ascending load of cell etc.
Be appreciated that, after subscriber equipment transmits upward signal on up transmitting channel, network equipment first can obtain this upward signal of the subscriber equipment transmitting in network equipment, multiple antenna received respectively, and then dynamically determines to use which merging mode to merge multi-antenna signal by the difference of the signal quality measured values of the upward signal of reception.
Step 103, network equipment merges the signal that multiple antenna receives according to the merging mode determined in step 102.
Wherein, if the merging mode determined in step 102 is aerial signal multi-path combing, network equipment is when performing merging, the direct spreading sequence of the signal that each antenna receives can be obtained respectively, adopt correlator to be separated Direct-Spread signal corresponding to signal that each antenna receives respectively, then by certain rule the multipath signal after being separated is combined and obtains useful signal energy.
Merge if the merging mode determined in step 102 is log-likelihood ratio stream Soft Inform ation, network equipment is when performing merging, the log-likelihood ratio that demodulation obtains each bit can be carried out respectively to the signal that each antenna receives, then the log-likelihood ratio of same bits on each antenna is added up, finally can flow to row decoding to the log-likelihood ratio obtained after cumulative.
If the merging mode determined in step 102 is decode results alternative amalgamate, network equipment is when performing merging, can to carrying out solution mediation decoding to the signal that each antenna receives respectively, then CRC (CyclicalRedundancyCheck is selected, CRC) the road decode results passed through is as final result, if wherein there is the decode results of multiple signal all to pass through CRC check, then one of them can be selected as final result in this multiple signal according to certain strategy, the signal that such as selection signal strength signal intensity is the strongest is as final result.
It should be noted that, above-mentioned network equipment can be base station or radio network controller (RadioNetworkController, the network equipment of RNC) etc. going on a user device, the signal that wherein subscriber equipment is launched on up transmitting may send to multiple base station, like this if wherein some base stations perform above-mentioned steps 101 to 103, then this base station is when performing above-mentioned steps 101, need the first signal quality measured values getting other base station receives user equipment to other base station and transmit in this base station, and then the merging performed in above-mentioned steps 102 to 103.Wherein, after base station gets signal quality measured values, can directly perform above-mentioned steps 102 and 103 by base station, or the signal quality measured values of acquisition is reported RNC by base station, perform above-mentioned steps 102 and 103 by RNC.
Visible, in the multi-antenna signal merging method of the present embodiment, network equipment can obtain network equipment respectively and receive the signal quality measured values that subscriber equipment transmits on multiple antennas, and the merging mode of the signal that multiple antenna receives is determined according to the difference of the signal quality measured values of Received signal strength on multiple antenna and preset strategy, comprise at preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of the mode of merging; Then according to the merging mode determined, the signal that multiple antenna receives is merged.Adopt the signal quality that the method dynamic of the present embodiment ground is launched according to network equipment actual reception subscriber equipment, suitable merging mode is selected to merge the signal that network equipment receives on multiple antennas, make the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, the accuracy of the input obtained after final merging is higher.
It should be noted that, network equipment determines suitable merging mode according in above-mentioned steps 101 and 102 according to the difference of the signal quality measured values of Received signal strength on each antenna, in order to consider other factors, such as these merge mode to the requirement etc. of network equipment at hardware aspect, the performance gain that merging for multi-antenna signal is obtained is larger, in a specific embodiment, network equipment is before execution above-mentioned steps 101, the merging mode of multi-antenna signal can also be determined according to following step, flow chart as shown in Figure 2, comprising:
Step 104, if the signal that multiple antenna receives meets preset condition, then determines that the merging mode of the signal that multiple antenna receives is aerial signal multi-path combing mode, then just can perform the merging in step 103; If the signal that multiple antenna receives does not meet preset condition, then execution can perform above-mentioned steps 101 to 103.
Above-mentioned preset condition can be preset at network equipment by user, so just can specify that some signal need not determine merging mode according to signal quality measured values, but directly be defined as aerial signal multi-path combing mode.Particularly, this preset condition can include but not limited to following condition: the signal that multiple antenna receives is transferred to the conditions such as a baseband processing unit, wherein, baseband processing unit refers to that limited the aerial signal received multiple antenna carries out separating the processing unit of mediation decoding.The signal that multiple antenna receives is radiofrequency signal, first the radiofrequency signal received from certain antenna is converted into baseband signal, then these baseband signals can be transferred to baseband processing unit, can perform the Base-Band Processing such as demodulation, decoding further by this baseband processing unit; If after being transferred to multiple different baseband processing unit from the baseband signal of some aerial signals, Base-Band Processing can be carried out to these signals respectively by these baseband processing units.
It should be noted that in addition, network equipment is before execution above-mentioned steps 103, can also first be combined process to be configured, particularly, if the merging mode determined in a step 102 is aerial signal multi-path combing, when then configuration network side apparatus performs the step merged in above-mentioned steps 103, use the signal that same processing unit such as each antenna of baseband processing unit process receives, the solution mediation decoding namely for the signal that each antenna receives is all by same processing unit processes.If multiple signals that above-mentioned needs carry out merging are by the such as baseband processing unit process of different processing units, then network equipment can be configured in baseband processing unit signal transmission and these signals focused on a baseband processing unit process.
If the merging mode determined in a step 102 is log-likelihood ratio stream Soft Inform ation, then configuration network side apparatus is when performing the step merged in above-mentioned steps 103, uses the signal that same processing unit such as each antenna of baseband processing unit process receives; Or use the signal that different processing units such as each antenna of baseband processing unit process receives, but needing to configure between these baseband processing units transmits log-likelihood ratio stream Soft Inform ation.In this case, if when using different processing units process, log-likelihood bit stream can be obtained respectively by the signal that different each antennas of processing unit demodulation receives, then can be gathered by other unit or one of them processing unit and merge the laggard row decoding of these log-likelihood bit streams.
If the merging mode determined in step 102 is decode results alternative amalgamate, then configuration network side apparatus is when performing the step merged in above-mentioned steps 103, use the signal that different processing units such as each antenna of baseband processing unit process receives, also do not set up the data transmission channel between processing unit.In this case, solution mediation decoding can be carried out to the signal that each antenna receives by different processing units, then can by other unit as the unit of radio network controller (RadioNetworkController, RNC) side or one of them processing unit carry out concentrating selection to decode results.
In another specific embodiment, network equipment, when performing above-mentioned steps 102, specifically can have following several situation:
(1) get the signal quality measured values of Received signal strength on two antennas in a step 101, in this case, network equipment can realize above-mentioned steps 102 according to following step, and flow chart as shown in Figure 3, comprising:
A1: judge whether the difference of the signal quality measured values of Received signal strength on two antennas is greater than preset threshold value, if be greater than, then performs step B1, if be less than, then performs step C1.If when wherein the difference of the signal quality measured values of Received signal strength equals preset threshold value on two antennas, can step B1 be performed, also can perform step C1.
B1: determine that the merging mode of signal on two antennas is decode results alternative amalgamate, performs step 103 afterwards.
C1: determine that the merging mode of signal on two antennas is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge, perform step 103 afterwards.
(2) signal quality measured values N number of antenna receiving subscriber equipment and transmit is got in a step 101, N be greater than 2 positive integer, in this case, network equipment can realize above-mentioned steps 102 according to following step, flow chart as shown in Figure 4, comprising:
A2: select the signal that signal strength signal intensity is the strongest in the signal received on N number of antenna, wherein network equipment can select the signal that multiple signal strength signal intensity is the strongest.
B2: the merging mode of Part I signal in the signal that N number of antenna receives is defined as aerial signal multi-path combing or the merging of log-likelihood ratio stream Soft Inform ation.
C2: the merging mode of Part II signal in the signal that the amalgamation result of Part I signal and N number of antenna receive is defined as decode results alternative amalgamate.
Above-mentioned Part I signal refers to the signal being less than preset threshold value with the difference of the signal quality measured values of signal selected in steps A 2, Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal selected, if during the threshold value selecting the difference of the signal quality measured values of signal to equal preset in steps A 2, can be Part I signal also can be Part II signal.And network equipment can limit the quantity of wherein Part I signal, namely the number needs of Part I signal will in preset scope, so just can will meet above-mentioned condition (being namely less than the signal of preset threshold value) and the signal exceeding preset quantity as Part II signal.Further, when the quantity of the signal being less than preset threshold value exceedes preset scope, in the signal exceeding preset scope, select M the signal that signal strength signal intensity is the strongest as Part I signal, M is in preset scope.Preset scope is set to 2 by such as network equipment, then when the quantity of the signal being less than preset threshold value is 5, exceed preset scope 2, then network equipment can select 2 signals that signal strength signal intensity is the strongest as Part I signal in these 5 signals.
It should be noted that, after performing step 102 according to above-mentioned steps A2 to C2, when performing step 103, network equipment first can merge mode to after the merging of Part I signal according to aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation, and then merges the amalgamation result of Part I signal and Part II signal according to decode results alternative amalgamate mode.
(3) especially, in above-mentioned (2) kind situation, if the restricted number of Part I signal is within two, in another kind of specific embodiment, network equipment can realize above-mentioned steps 102 according to following step, and flow chart as shown in Figure 5, comprising:
A3: two signals selecting signal strength signal intensity the strongest in the signal received on N number of antenna.
B3: whether the difference of the signal quality measured values of two signals selected in determining step A3 is greater than preset threshold value, if be greater than, then performs step C3, if be less than, then performs step D3.If when wherein the difference of the signal quality measured values of two signals equals preset threshold value, can step C3 be performed, also can perform step D1.
C3: the merging mode of two signals selected in determining step A3 is decode results alternative amalgamate, performs step e 3 afterwards.
D3: the merging mode of two signals selected in determining step A3 is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge, and performs step e 3 afterwards.
E3: the merging mode of other signal in the signal that the amalgamation result of two signals selected in steps A 3 and N number of antenna receive is defined as decode results alternative amalgamate.
It should be noted that, perform step 102 by the above-mentioned 2nd and 3 kinds of modes, can merge being greater than the signal that two antennas receive, by other mode, can also not repeat at this in actual applications.
The embodiment of the present invention also provides a kind of network equipment, can carry out the merging of multi-antenna signal between the unit in network equipment according to above-mentioned steps, and this network equipment can be shown in base station or RNC structural representation Fig. 6, comprising:
Signal quality acquiring unit 10, the signal quality measured values that subscriber equipment transmits is received on multiple antennas for obtaining network equipment respectively, and send the signal quality measured values of described acquisition to merging mode determining unit 11, wherein, signal quality measured values comprises following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal symbol energy and upward signal chip energy and down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy etc.
Merging mode determining unit 11, for determining the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, comprise at described preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode; When signal quality acquiring unit 10 obtain be down-bound pilot frequency signal chip noise or descending pilot frequency symbol energy time, be used to refer to descending pilot frequency quality, then merge the difference that terminal equipment just can be received the descending pilot frequency quality of Liang Ge community by mode determining unit 11, be converted on each antenna in cell of network equipment and receive the difference that this terminal equipment sends the signal quality of signal, need the factor of input as poor in two cell downlink pilot tones in conversion process, two cell uplink reception antenna abilities, two ascending load of cell etc.
Merge cells 12, merges the signal that multiple antenna receives for the merging mode determined according to described merging mode determining unit 11.In the process of specific implementation, this merge cells 12 can be specifically an above-mentioned baseband processing unit or multiple above-mentioned baseband processing unit, or the unit etc. of RNC side, wherein, if what the mode of merging determining unit 11 was determined is decode results alternative amalgamate mode, then this merge cells 12 can be realized by RNC side; And if what merge that mode determining unit 11 determines is that log-likelihood ratio stream Soft Inform ation merges mode, then this merge cells 12 can relate to multiple baseband processing unit; If what the mode of merging determining unit 11 was determined is aerial signal multi-path combing mode, then this merge cells 12 can be a baseband processing unit or multiple baseband processing unit.
In the network equipment of the present embodiment, signal quality acquiring unit 10 can obtain network equipment respectively and receive the signal quality measured values that subscriber equipment transmits on multiple antennas, and determined the merging mode of the signal that multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on multiple antenna and preset strategy by the mode of merging determining unit 11, comprise at preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of the mode of merging; Then merge cells 12 merges the signal that multiple antenna receives according to the merging mode determined.Like this can dynamically according to the signal quality that network equipment actual reception subscriber equipment is launched, suitable merging mode is selected to merge the signal that network equipment receives on multiple antennas, make the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, the accuracy of the input obtained after final merging is higher.
Shown in figure 7, in a specific embodiment, network equipment is except can comprising structure as shown in Figure 6, the first dispensing unit 13 and the second dispensing unit 14 can also be comprised, such merge cells 12 can perform the step of merging according to the configuration of the first dispensing unit 13 and the second dispensing unit 14, wherein:
In the present embodiment, above-mentioned merging mode determining unit 11, if the signal that can also receive on described multiple antenna meets preset condition, then determines that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode; If the signal that described multiple antenna receives does not meet preset condition, then the difference of the signal quality measured values obtained according to described signal quality acquiring unit and preset strategy determine the merging mode of the signal that described multiple antenna receives.
First dispensing unit 13, if the merging mode determined for described merging mode determining unit 11 is aerial signal multi-path combing, when configuration network side apparatus performs the step of described merging, use the signal that same processing unit such as each antenna of baseband processing unit process receives, or configuration uses the signal that each antenna of different processing units process receives, but the signal transmission passage between needing to be configured between each processing unit; Merge if the merging mode that described merging mode determining unit 11 is determined is log-likelihood ratio stream Soft Inform ation, when configuration network side apparatus performs the step of described merging, use the signal that same or each antenna of different processing units process receive, wherein, for the situation using the signal that each antenna of different processing units process receives, this first dispensing unit 13 can be configured in the LLR flow transmission passage between each processing unit.
Second dispensing unit 14, if the merging mode determined for described merging mode determining unit 11 is decode results alternative amalgamate, configure described network equipment when performing the step of described merging, when using the signal that each antenna of different processing units process receives, and configure decode results transmission channel between each processing unit.
In the present embodiment, if the signal that each antenna receives meets preset condition, the signal that such as each antenna receives is on a baseband processing unit, then directly determine that the merging mode of multi-antenna signal is aerial signal multi-path combing by merging mode determining unit 11, then carried out the merging of multi-antenna signal by merge cells 12; If the signal that each antenna receives does not meet preset condition, the signal that such as each antenna receives is on different baseband processing units, then merge mode determining unit 11 can determine multi-antenna signal merging mode according to signal quality measured values, and then merged by merge cells 12, the merging that wherein the first dispensing unit 13 and the second dispensing unit 14 can be combined unit 12 pairs of multi-antenna signals is configured.
In another specific embodiment, the merging mode determining unit 11 in network equipment can be realized by any one or more mode following:
(1) with reference to shown in figure 8, if signal quality acquiring unit 10 gets the signal quality measured values two antennas receiving subscriber equipment and transmit, then merge mode determining unit 11 and specifically can comprise the first merging determining unit 110 and the second merging determining unit 111, and network equipment can also comprise thresholding adjustment unit 15, wherein:
First merges determining unit 110, if the difference of the signal quality measured values of Received signal strength is less than preset threshold value on two antennas that described signal quality acquiring unit 10 obtains, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge;
Second merges determining unit 111, if the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on two antennas that described signal quality acquiring unit 10 obtains, then determine that the merging mode of signal on described two antennas is decode results alternative amalgamate.If when wherein on two antennas, the difference of the signal quality measured values of Received signal strength equals preset threshold value, can be arbitrary merging mode by the first merging determining unit 110 or the second merging mode merging the signal that determining unit 111 is determined on these two antennas.
Thresholding adjustment unit 15, merging for dynamically adjusting described first the preset threshold value compared in determining unit 110, particularly, can dynamically adjust this preset threshold value according to the dynamic change of the network equipment such as network device internal resource status.
(2) with reference to shown in figure 9, if described signal quality acquiring unit 10 gets the signal quality measured values N number of antenna receiving subscriber equipment and transmit, described N be greater than 2 positive integer, then merge mode determining unit 11 and specifically can comprise signal behavior unit 112 and the 3rd merging determining unit 113, and network equipment can also comprise thresholding adjustment unit 15, wherein:
Signal behavior unit 112, selects the signal that signal strength signal intensity is the strongest in the signal received on described N number of antenna; The signal of this selection can be the signal that one or more signal strength signal intensity is the strongest.
3rd merges determining unit 113, for the merging mode of Part I signal in the signal that N number of antenna receives being defined as aerial signal multi-path combing or the merging of log-likelihood ratio stream Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate; Wherein, described Part I signal refers to that the difference of the signal quality measured values of the signal selected with described signal behavior unit 112 is less than the signal of preset threshold value, described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection, if when equaling preset threshold value with the difference of the signal quality measured values of the signal selected, this signal can be Part I signal also can be Part II signal.Wherein the quantity of Part I signal may be limited in preset scope.Wherein, the 3rd merge determining unit 113 can will meet above-mentioned condition (being namely less than the signal of preset threshold value) and the signal exceeding preset quantity as Part II signal.
Further, 3rd merge determining unit 113 can also work as described in be less than the signal of preset threshold value quantity when exceeding preset scope, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
Thresholding adjustment unit 15, merges for dynamically adjusting the described 3rd the preset threshold value compared in determining unit 113.
(3) especially, if in above-mentioned (2) kind situation, by the restricted number of Part I signal within two, then:
The signal behavior unit 112 that above-mentioned merging mode determining unit 11 comprises, specifically for two signals selecting signal strength signal intensity the strongest in the signal that receives on described N number of antenna; And the above-mentioned 3rd and determining unit 113, if be less than preset threshold value specifically for the difference of the signal quality measured values of two signals of described signal behavior unit 112 selection, then determine that the merging mode of two signals of described selection is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge; If the difference of the signal quality measured values of two of described selection signals is greater than preset threshold value, then determine that the merging mode of two signals of described selection is decode results alternative amalgamate; In the signal that the amalgamation result of two signals then selected by described signal behavior unit 112 and described N number of antenna receive, the merging mode of other signal is defined as decode results alternative amalgamate.
The embodiment of the present invention also provides another kind of network equipment, and structural representation as shown in Figure 10, comprises the memory 20 be connected respectively in bus, processor 21, input unit 23 and output device 24, wherein:
Be used in memory 20 storing the data inputted from input unit 23, and the information such as the necessary file of processor 21 deal with data can also be stored; Input unit 23 and output device 24 are ports of network equipment and other devices communicatings, can also comprise the external equipment of network equipment such as display, keyboard, mouse and printer etc.
Processor 21, the signal quality measured values transmitted is received on multiple antennas for obtaining network equipment respectively, wherein, signal quality measured values at least comprises following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal symbol energy and upward signal chip energy and down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy etc.; And the merging mode of the signal that described multiple antenna receives is determined according to the difference of the signal quality measured values of Received signal strength on multiple antenna and preset strategy, comprise at described preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode; Finally according to the merging mode determined, the signal that multiple antenna receives is merged.Like this can dynamically according to the signal quality that network equipment actual reception subscriber equipment is launched, suitable merging mode is selected to merge the signal that network equipment receives on multiple antennas, make the practical communication performance considered when multi-antenna signal merges between subscriber equipment and network equipment, the accuracy of the signal obtained after final merging is higher.
Further, processor 21, if the signal also received on described multiple antenna meets preset condition, such as need the multiple signals merged to be transferred to a baseband processing unit, then determine that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode; If the signal that multiple antenna receives is not meeting preset condition, the multiple signals merged such as are being needed to be transferred to multiple different baseband processing unit, then again according to the merging mode of above-mentioned signal quality measured values determination multi-antenna signal.And processor 21, can also before performing the step merged, the process be combined is configured, particularly, if the merging mode determined is aerial signal multi-path combing, processor 21 can configuration network side apparatus when performing the step of described merging, uses the signal that each antenna of same processing unit processes receives, or configuration uses the signal that each antenna of different processing units process receives, but the signal transmission passage between needing to be configured between each processing unit; Merge if the merging mode determined is log-likelihood ratio stream Soft Inform ation, processor 21 can configuration network side apparatus when performing the step of described merging, use the signal that each antenna of same or different processing unit processes receives, wherein, for the situation using the signal that each antenna of different processing units process receives, this processor 21 can be configured in the LLR flow transmission passage between each processing unit; If the merging mode determined is decode results alternative amalgamate, processor 21 configures described network equipment when performing the step of described merging, use the signal that each antenna of different processing units process receives, and configure decode results transmission channel between each processing unit.
In a specific embodiment, at processor 21 when determining merging mode, following several implementation can be had:
(1) processor 21, for when get two antennas receive signal quality measured values that subscriber equipment transmits time, if the difference of the signal quality measured values of Received signal strength is less than preset threshold value on two antennas obtained, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge; If the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on two antennas obtained, then determine that the merging mode of signal on described two antennas is decode results alternative amalgamate.If when the difference of the signal quality measured values of Received signal strength equals preset threshold value on two antennas, can determine that the merging mode of the signal on these two antennas is arbitrary merging mode.
(2) processor 21, for when get the signal quality measured values N number of antenna receiving subscriber equipment and transmit, described N be greater than 2 positive integer, then in the signal received on described N number of antenna, select the signal that signal strength signal intensity is the strongest; The merging mode of Part I signal in the signal that N number of antenna receives is defined as aerial signal multi-path combing or the merging of log-likelihood ratio stream Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate; Wherein, described Part I signal refers to the signal being less than preset threshold value with the difference of the signal quality measured values of the signal selected, and the quantity of Part I signal may be limited in preset scope, described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection, if when equaling preset threshold value with the difference of the signal quality measured values of the signal selected, this signal can be Part I signal also can be Part II signal.
Wherein, processor 21 can will meet above-mentioned condition (being namely less than the signal of preset threshold value) and the signal exceeding preset quantity as Part II signal.Further, this processor 21 can also work as described in be less than the signal of preset threshold value quantity when exceeding preset scope, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
(3) especially, in above-mentioned (2) kind situation, if by the restricted number of Part I signal within two, at processor 21, specifically for two signals selecting signal strength signal intensity the strongest in the signal that receives on described N number of antenna; If the difference of the signal quality measured values of two of described selection signals is less than preset threshold value, then determine that the merging mode of two signals of described selection is that aerial signal multi-path combing or log-likelihood ratio stream Soft Inform ation merge; If the difference of the signal quality measured values of two of described selection signals is greater than preset threshold value, then determine that the merging mode of two signals of described selection is decode results alternative amalgamate; The merging mode of other signal in the signal that the amalgamation result of two of described selection signals and described N number of antenna receive is defined as decode results alternative amalgamate.
It should be noted that, above-mentioned preset threshold value can be dynamically change, particularly, processor 21 can upgrade this preset threshold value according to actual needs, and dynamically adjusts this preset threshold value according to the dynamic change such as network device internal resource status of the network equipment.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory (ROM), random-access memory (ram), disk or CD etc.
The multi-antenna signal merging method provided the embodiment of the present invention above and network equipment are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. a multi-antenna signal merging method, is characterized in that, comprising:
Acquisition network equipment receives the signal quality measured values that subscriber equipment transmits on multiple antennas respectively; Described signal quality measured values at least includes but not limited to following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal chip energy, upward signal symbol energy, down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy;
Determine the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, comprise at described preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode; The difference that the difference that the scope of the difference of described signal quality measured values comprises described signal quality measured values is greater than preset threshold value or described signal quality measured values is less than preset threshold value;
According to the described merging mode determined, the signal that multiple antenna receives is merged.
2. the method for claim 1, is characterized in that, describedly obtains before network equipment receives the signal quality measured values that subscriber equipment transmits on multiple antennas respectively, also comprises:
If the signal that described multiple antenna receives meets preset condition, then determine that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode;
If the signal that described multiple antenna receives does not meet preset condition, then perform described acquisition signal quality measured values and the step determining merging mode;
Described preset condition comprises the signal that multiple antenna receives and is transferred to a baseband processing unit.
3. method as claimed in claim 1 or 2, it is characterized in that, if get the signal quality measured values two antennas receiving described subscriber equipment and transmit, then determine the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, specifically comprise:
If the difference of the signal quality measured values of Received signal strength is less than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio Soft Inform ation merge;
If the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is decode results alternative amalgamate.
4. method as claimed in claim 1 or 2, it is characterized in that, if get the signal quality measured values N number of antenna receiving described subscriber equipment and transmit, described N be greater than 2 positive integer, then determine the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, specifically comprise:
Described N number of antenna in the signal received select the signal that signal strength signal intensity is the strongest;
The merging mode of Part I signal in the signal that described N number of antenna receives is defined as aerial signal multi-path combing or the merging of log-likelihood ratio Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate;
Described Part I signal refers to the signal being less than preset threshold value with the difference of the signal quality measured values of the signal of described selection, and described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection.
5. method as claimed in claim 4, it is characterized in that, the quantity of described Part I signal is in preset scope;
When the described quantity being less than the signal of preset threshold value exceedes preset scope, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
6. method as claimed in claim 3, it is characterized in that, described method also comprises: dynamically adjust described preset threshold value.
7. method as claimed in claim 1 or 2, it is characterized in that, described signal quality measured values at least comprises following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal chip energy, upward signal symbol energy, down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy.
8. a network equipment, is characterized in that, comprising:
Signal quality acquiring unit, receives for obtaining network equipment respectively the signal quality measured values that subscriber equipment transmits on multiple antennas, and sends the signal quality measured values of described acquisition to merging mode determining unit; Described signal quality measured values at least includes but not limited to following arbitrary parameter: upward signal symbol signal to noise ratio, upward signal chip signal to noise ratio, upward signal chip energy, upward signal symbol energy, down-bound pilot frequency signal chip signal to noise ratio and descending pilot frequency symbol energy;
Merging mode determining unit, for determining the merging mode of the signal that described multiple antenna receives according to the difference of the signal quality measured values of Received signal strength on described multiple antenna and preset strategy, comprise at described preset strategy: the scope of the difference of signal quality measured values and the corresponding relation of described merging mode; The difference that the difference that the scope of the difference of described signal quality measured values comprises described signal quality measured values is greater than preset threshold value or described signal quality measured values is less than preset threshold value;
Merge cells, merges the signal that multiple antenna receives for the merging mode determined according to described merging mode determining unit.
9. equipment as claimed in claim 8, is characterized in that, also comprise:
Described merging mode determining unit, if the signal also received on described multiple antenna meets preset condition, then determines that the merging mode of the signal that described multiple antenna receives is aerial signal multi-path combing mode; If the signal that described multiple antenna receives does not meet preset condition, then the difference of the signal quality measured values obtained according to described signal quality acquiring unit and preset strategy determine the merging mode of the signal that described multiple antenna receives; Described preset condition comprises the signal that multiple antenna receives and is transferred to a baseband processing unit.
10. as claimed in claim 8 or 9 equipment, is characterized in that, if described signal quality acquiring unit gets the signal quality measured values two antennas receiving described subscriber equipment and transmit, described merging mode determining unit, specifically comprises:
First merges determining unit, if the difference of the signal quality measured values of Received signal strength is less than preset threshold value on described two antennas, then determine that the merging mode of signal on described two antennas is that aerial signal multi-path combing or log-likelihood ratio Soft Inform ation merge;
Second merges determining unit, if the difference of the signal quality measured values of Received signal strength is greater than preset threshold value on described two antennas, then determines that the merging mode of signal on described two antennas is decode results alternative amalgamate.
11. equipment as claimed in claim 8 or 9, it is characterized in that, if described signal quality acquiring unit gets the signal quality measured values N number of antenna receiving described subscriber equipment and transmit, described N be greater than 2 positive integer, described merging mode determining unit, specifically comprises:
Signal first selected cell, selects the signal that signal strength signal intensity is the strongest in the signal received on described N number of antenna;
3rd merges determining unit, for the merging mode of Part I signal in the signal that N number of antenna receives being defined as aerial signal multi-path combing or the merging of log-likelihood ratio Soft Inform ation, the merging mode of Part II signal in the signal that the amalgamation result of described Part I signal and described N number of antenna receive is defined as decode results alternative amalgamate;
Described Part I signal refers to that the difference of the signal quality measured values of the signal selected with described signal first selected cell is less than the signal of preset threshold value, and described Part II signal refers to the signal being greater than preset threshold value with the difference of the signal quality measured values of the signal of described selection.
12. equipment as claimed in claim 11, it is characterized in that, the quantity of described Part I signal is in preset scope;
Described 3rd merges determining unit, also for when described in be less than the signal of preset threshold value quantity exceed preset scope time, select M the signal that signal strength signal intensity is the strongest as described Part I signal in described exceeding in the signal of preset scope, described M is in described preset scope.
13. equipment as claimed in claim 10, is characterized in that, also comprise:
Thresholding adjustment unit, for dynamically adjusting described preset threshold value.
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