CN101711055B - Method, network element and system for controlling transmission power - Google Patents
Method, network element and system for controlling transmission power Download PDFInfo
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- CN101711055B CN101711055B CN2009102418478A CN200910241847A CN101711055B CN 101711055 B CN101711055 B CN 101711055B CN 2009102418478 A CN2009102418478 A CN 2009102418478A CN 200910241847 A CN200910241847 A CN 200910241847A CN 101711055 B CN101711055 B CN 101711055B
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Abstract
The invention provides a method, a network element and a system for controlling the transmission power, relating to the field of mobile communication and aiming to solve the problem that the time for adjusting the transmission power of the network element is relatively lagged in the prior art. In the method, a first network element receives a signal transmitted by a second network element from a primary channel; the first network element generates a current interference fringe level value of the signal which is transmitted by the second network element and received by the first network element in the primary channel according to the signal transmitted by the second network element; the first network element generates an interference fringe level value of a target channel according to the current interference fringe level value; the first network generates the transmission power of the second network element in the target channel according to the interference fringe level value; and the first network element transmits the transmission power to the second network element so as to enable the second network element to transmit the signal to the first network element at the transmission power in the target channel. The invention can rapidly adjust the transmission power of the network elements in the target channel when assessed to the target channel from the primary channel.
Description
Technical field
The present invention relates to moving communicating field, be meant a kind of method, network element and system that controls transmitting power especially.
Background technology
Power control is meant within the specific limits, changes the through-put power of travelling carriage or base station with wireless mode, reduces system interference to reach, improves the availability of frequency spectrum, and can save the purpose of the power consumption of travelling carriage and base station.When the incoming level of receiving terminal and signal quality were relatively good, the through-put power of reduction opposite end that can be suitable remained on certain acceptable level communication quality, so just can reduce the interference to other callings of surrounding area.
When travelling carriage began with being connected of base station; Travelling carriage is listened to BCCH (BCCH when the idle pulley according to it; Broadcast Control Channel) the resulting MsTxPwrMaxCCH of system message of broadcasting (maximum of MS travelling carriage on control channel allows transmitting power) parameter; Maximum when obtaining its access RACH (Random Access Channel, RACH) channel allows transmitting power.After travelling carriage was received the immediate assignment order, when the target-specific channel inserted, the maximum that also adopts this parameter to confirm allowed transmitting power to launch.Travelling carriage will be confirmed its transmitting power according to indicated power grade in the L1 head of its descending SACCH that receives (following channel at a slow speed) after destination channel inserts successfully.And the power grade in the L1 of the descending SACCH of target-specific channel (physical layer) head then is that BSC (Base Station Controller, base station controller) brings BTS's (Base Transceiver Station, base transceiver station) in the channel activation command.
In general; (the Mobile Station Power of MS Power in the target-specific channel activation command; Travelling carriage power) all be maximum, perhaps after BSS (Base Station Sub-System, base station sub-system) is inserting destination channel; The signal quality measured data of target-specific channel have been obtained, then according to power control algorithm adjustment MS Power.Because power control algorithm need take the regular hour, it is slow to cause the transmitting power of travelling carriage to be regulated the speed like this, causes other of surrounding area are called out producing a certain amount of interference.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method, network element and system that controls transmitting power, can work as transmitting terminal and insert the process of destination channel from former channel, adjusts the transmitting power of transmitting terminal in destination channel apace.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme following:
On the one hand, a kind of method of controlling transmitting power is provided, is applied to the scene of second network element, comprising from former channel access destination channel:
First network element receives the signal that second network element sends from former channel;
Said first network element generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value according to the signal that said second network element sends;
Said first network element generates the interference fringe horizontal estimated value of destination channel according to said current interference fringe level value;
Said first network element generates the transmitting power of said second network element in destination channel according to the interference fringe horizontal estimated value of said destination channel;
Said first network element sends to said second network element with said transmitting power, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
Said first network element is according to the signal that said second network element sends, and generates said first network element and comprises in the step that former channel receives the current interference fringe level value of the signal that second network element sends:
Said first network element calculates the error rate of the signal of said transmission according to the access burst pulse in the signal that is included in said transmission;
Said first network element calculates said first network element receives the signal of second network element transmission at former channel current interference fringe level value according to the error rate of the signal of said transmission.
Said first network element is according to said current interference fringe level value, and the step that generates the interference fringe horizontal estimated value of destination channel comprises:
Whether the frequency of the more said former channel of said first network element is consistent with the frequency of said destination channel;
If consistent, the interference fringe horizontal estimated value of the destination channel that then said first network element generates is: the historical interference fringe mean value of said current interference fringe level value or the signal that is sent by second network element that receives in destination channel for said first network element;
If inconsistent, the interference fringe horizontal estimated value of the destination channel that then said first network element generates is: said current interference fringe level value and said first network element higher value in the historical interference fringe mean value of the signal that is sent by second network element that destination channel receives.
The interference fringe horizontal estimated value of the destination channel that said first network element generates is: the historical interference fringe mean value of said current interference fringe level value or the signal that sends by second network element that receives in destination channel for said first network element, and concrete steps comprise:
Said first network element judges whether to get access to the historical interference fringe mean value of said first network element at the reception second network element signal of destination channel;
If judged result is for being that then said interference fringe horizontal estimated value is: the historical interference fringe mean value of the signal that sends by second network element that said first network element receives in destination channel; Otherwise said interference fringe horizontal estimated value is: said current interference fringe level value.
Said first network element generates said second network element and comprises in the step of the transmitting power of destination channel according to the interference fringe horizontal estimated value of said destination channel:
Said first network element generates said first network element receives the signal of second network element transmission at former channel level intensity indicated value according to the signal that said second network element sends;
Said first network element judges that the interference fringe horizontal estimated value of said destination channel whether greater than the interference fringe level thresholds, generates first judged result;
When said first judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element;
When said first judged result for not the time, whether said first network element judges said level intensity indicated value less than the level intensity threshold value, generates second judged result; When said second judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said second judged result for not the time, said first network element generates the transmitting power of said second network element in destination channel according to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value.
Said first network element with the step that said transmitting power sends to said second network element is:
Said first network element perhaps is carried at the mode in the order with said transmitting power through transmitting power being carried at the mode in the descending destination channel, and said transmitting power is sent to said second network element.
On the other hand, a kind of network element is provided, is applied to the scene of second network element from former channel access destination channel, said network element is first network element, comprising:
Receiving element is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
The transmitting power generation unit is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
Said interference fringe level value generation unit comprises:
Receive subelement, be used for calculating the error rate of the signal of said transmission according to the access burst pulse that is included in the signal of said transmission;
Computation subunit is used for the error rate according to the signal of said transmission, calculates said first network element receives the signal of second network element transmission at former channel current interference fringe level value.
Stating interference fringe horizontal estimated value generation unit comprises:
Compare subelement, whether the frequency that is used for more said former channel is consistent with the frequency of said destination channel;
Interference fringe horizontal estimated value generates subelement; Be used for when comparative result is consistent, the interference fringe horizontal estimated value of the destination channel of generation is: the historical interference fringe mean value of said current interference fringe level value or the signal that is sent by second network element that receives in destination channel for said first network element; When inconsistent, the interference fringe horizontal estimated value of the destination channel of generation is: said current interference fringe level value and said first network element higher value in the historical interference fringe mean value of the signal that is sent by second network element that destination channel receives.
Said transmitting power generation unit comprises:
Level intensity indicated value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel level intensity indicated value;
First judgment sub-unit, whether the interference fringe horizontal estimated value that is used to judge said destination channel generates first judged result greater than the interference fringe level thresholds;
Second judgment sub-unit is used to judge that said level intensity indicated value whether less than the level intensity threshold value, generates second judged result;
Transmitting power generates subelement, be used for when said first judged result when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result for not, and said second judged result is when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result is not; Said second judged result is not for the time; According to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value, generate the transmitting power of said second network element in destination channel.
On the other hand, a kind of system that controls transmitting power is provided, is applied to the scene of second network element, comprising: first network element and second network element from former channel access destination channel;
Said first network element comprises:
Receiving element is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
The transmitting power generation unit is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
Said first network element is the base station, and said second network element is a travelling carriage.
Embodiments of the invention have following beneficial effect:
In the such scheme, before transmitting terminal inserted destination channel from former channel, said receiving terminal generated the interference fringe horizontal estimated value of destination channel according to the current interference fringe level value of former channel; Said receiving terminal generates the transmitting power of said transmitting terminal in destination channel according to the interference fringe horizontal estimated value of said destination channel.Before transmitting terminal inserts destination channel from former channel; Can estimate the up quality of destination channel; Adjust the transmitting power of transmitting terminal according to the up quality of destination channel then, transmitting terminal is fallen in the expected range in the transmitting power of destination channel quickly in destination channel.
Description of drawings
Fig. 1 is the schematic flow sheet of the method for control transmitting power of the present invention;
Fig. 2 is the particular flow sheet of step 11 in the method for the said control transmitting power of Fig. 1;
Fig. 3 is the particular flow sheet of step 12 embodiment in the method for the said control transmitting power of Fig. 1;
Fig. 4 is the particular flow sheet of another embodiment of step 12 in the method for the said control transmitting power of Fig. 1;
Fig. 5 is the particular flow sheet of step 13 in the method for the said control transmitting power of Fig. 1;
Fig. 6 is the structural representation of network element of the present invention;
Fig. 7 is the structural representation of the system of control transmitting power of the present invention;
Fig. 8 controls the handling process sketch map of an embodiment of the method for transmitting power for the present invention.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
Embodiments of the invention are directed against the time ratio of the transmitted power of adjustment transmitting terminal in the prior art than the problem that lags behind, and a kind of method, network element and system that controls transmitting power is provided.
As shown in Figure 1, be a kind of method of controlling transmitting power of the present invention, comprising:
Step 11, first network element receives the signal that second network element sends from former channel;
Step 12, said first network element generate said first network element receives the signal of second network element transmission at former channel current interference fringe level value according to the signal that said second network element sends;
Step 13, said first network element generate the interference fringe horizontal estimated value of destination channel according to said current interference fringe level value;
Step 14, said first network element generate the transmitting power of said second network element in destination channel according to the interference fringe horizontal estimated value of said destination channel;
Step 15, said first network element sends to said second network element with said transmitting power, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
In the such scheme, before transmitting terminal inserted destination channel from former channel, said receiving terminal generated the interference fringe horizontal estimated value of destination channel according to the current interference fringe level value of former channel; Said receiving terminal generates the transmitting power of said transmitting terminal in destination channel according to the interference fringe horizontal estimated value of said destination channel.Before transmitting terminal inserts destination channel from former channel; Can estimate the up quality of destination channel; Adjust the transmitting power of transmitting terminal according to the up quality of destination channel then, transmitting terminal is fallen in the expected range in the transmitting power of destination channel quickly in destination channel.
As shown in Figure 2, the particular flow sheet for step 12 in the method for the said control transmitting power of Fig. 1 comprises:
As shown in Figure 3, the particular flow sheet for step 13 in the method for the said control transmitting power of Fig. 1 comprises:
As shown in Figure 4, be another particular flow sheet of step 132 in the method for the said control transmitting power of Fig. 1, wherein, step 132 comprises:
In this method, current interference fringe level value or said first network element have been set priority in two values of historical interference fringe mean value of the reception second network element signal of destination channel, made that interference fringe horizontal estimated value is more accurate.
As shown in Figure 5, the particular flow sheet for step 14 in the method for the said control transmitting power of Fig. 1 comprises:
Step 141, said first network element generate said first network element receives the signal of second network element transmission at former channel level intensity indicated value according to the signal that said second network element sends;
Step 142, said first network element judge that the interference fringe horizontal estimated value of said destination channel whether greater than the interference fringe level thresholds, generates first judged result;
Step 143, when said first judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element;
Step 144, when said first judged result for not the time, whether said first network element judges said level intensity indicated value less than the level intensity threshold value, generates second judged result;
Step 145, when said second judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element;
Step 146; When said second judged result for not the time; Said first network element generates the transmitting power of said second network element in destination channel according to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value.That is to say; Said second network element is that the maximum transmission power of said second network element deducts the difference between said level intensity indicated value and the said level intensity threshold value in the transmitting power of destination channel; Be equivalent to reduce certain power from maximum transmission power, the power of this reduction is confirmed by difference.
Step 15 can for: said first network element is through being carried at transmitting power the mode in the descending destination channel; Perhaps do, said transmitting power is carried at the mode in the order, said transmitting power is sent to said second network element.
Wherein, the mean value of a plurality of historical interference fringe level value of the historical interference fringe mean value of the signal that sends by second network element that receives in destination channel of first network element signal that to be first network element send at reception second network element of destination channel.
As shown in Figure 6, be network element of the present invention, said network element is first network element 60, said first network element 60 comprises:
Receiving element 61 is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit 62 is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit 63 is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
Transmitting power generation unit 64 is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element 65 is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
In the such scheme, before transmitting terminal inserted destination channel from former channel, said receiving terminal generated the interference fringe horizontal estimated value of destination channel according to the current interference fringe level value of former channel; Said receiving terminal generates the transmitting power of said transmitting terminal in destination channel according to the interference fringe horizontal estimated value of said destination channel.Before transmitting terminal inserts destination channel from former channel; Can estimate the up quality of destination channel; Adjust the transmitting power of transmitting terminal according to the up quality of destination channel then, transmitting terminal is fallen in the expected range in the transmitting power of destination channel quickly in destination channel.
Said interference fringe level value generation unit 62 comprises:
Receive subelement, be used for calculating the error rate of the signal of said transmission according to the access burst pulse that is included in the signal of said transmission;
Computation subunit is used for the error rate according to the signal of said transmission, calculates said first network element receives the signal of second network element transmission at former channel current interference fringe level value.
Said interference fringe horizontal estimated value generation unit 63 comprises:
Compare subelement, whether the frequency that is used for more said former channel is consistent with the frequency of said destination channel;
Interference fringe horizontal estimated value generates subelement; Be used for when comparative result is consistent, the interference fringe horizontal estimated value of the destination channel of generation is: the historical interference fringe mean value of said current interference fringe level value or the signal that is sent by second network element that receives in destination channel for said first network element; When inconsistent, the interference fringe horizontal estimated value of the destination channel of generation is: said current interference fringe level value and said first network element higher value in the historical interference fringe mean value of the signal that is sent by second network element that destination channel receives.
Said transmitting power generation unit 64 comprises:
Level intensity indicated value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel level intensity indicated value;
First judgment sub-unit, whether the interference fringe horizontal estimated value that is used to judge said destination channel generates first judged result greater than the interference fringe level thresholds;
Second judgment sub-unit is used to judge that said level intensity indicated value whether less than the level intensity threshold value, generates second judged result;
Transmitting power generates subelement, be used for when said first judged result when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result for not, and said second judged result is when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result is not; Said second judged result is not for the time; According to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value, generate the transmitting power of said second network element in destination channel.
Transmitting element 65 is: through transmitting power being carried at the mode in the descending destination channel, perhaps said transmitting power is carried at the mode in the order, said transmitting power is sent to said second network element.
Of Fig. 7, be a kind of system 10 that controls transmitting power of the present invention, be applied to the scene of second network element from former channel access destination channel, comprising: first network element 60 and second network element 70;
Said first network element 60 comprises:
Receiving element 61 is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit 62 is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit 63 is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
Transmitting power generation unit 64 is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element 65 is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
In the such scheme, before transmitting terminal inserted destination channel from former channel, said receiving terminal generated the interference fringe horizontal estimated value of destination channel according to the current interference fringe level value of former channel; Said receiving terminal generates the transmitting power of said transmitting terminal in destination channel according to the interference fringe horizontal estimated value of said destination channel.Before transmitting terminal inserts destination channel from former channel; Can estimate the up quality of destination channel; Adjust the transmitting power of transmitting terminal according to the up quality of destination channel then, transmitting terminal is fallen in the expected range in the transmitting power of destination channel quickly in destination channel.
Optional, said first network element is the base station, said second network element is a travelling carriage.The invention is not restricted to this, those skilled in the art can understand, first network element can be transreceiver in the wireless telecommunication system arbitrarily; Second network element can for: carry out the transreceiver of the other end of wireless telecommunications with first network element
Travelling carriage of the present invention inserts the Poewr control method the destination channel process from former channel; Before activating the target-specific channel; Can estimate the up quality of target-specific channel; Transmitting power according to certain algorithm adjustment travelling carriage so just can make the transmitting power of travelling carriage fall in the expected range quickly, and then reduces the interference to other calling generations of surrounding area.
The present invention can be before destination channel inserts, the interference level of estimating target channel, thereby the transmitting power of adjustment travelling carriage on destination channel.
Below describe the method for control transmitting power of the present invention, may further comprise the steps:
Step 1, first network element obtains the measurement data of former channel; The measurement data of said former channel comprises the incoming level and the error rate.
Step 2, first network element is according to the measurement data that on former channel, is obtained, the interference level of estimating target channel.Wherein, first network element is a receiving terminal, and second network element is opposite end, just transmitting terminal.
Wherein, the method for the interference level in the estimating target channel is: the interference level that estimates former channel through the measurement data that on former channel, is obtained; Through the interference level of former channel, the interference level of estimating target channel.
If former channel and destination channel are used same frequency, think that then the interference level of destination channel equals the interference level of former channel or the historical interference fringe level value of destination channel; If former channel and destination channel are used different frequent points, then use the historical interference fringe level value of destination channel that former channel disturbance level is revised, obtain the interference level of destination channel.
Step 3 if interference level is lower, then orders the opposite end on destination channel, to reduce transmitting power, otherwise keeps maximum power constant.If the interference level on the estimating target channel is lower than preset interference threshold, then orders the opposite end on destination channel, to reduce transmitting power and insert; Otherwise the order opposite end adopts maximum transmission power to insert in destination channel.
Wherein, the order opposite end reduces transmitting power on destination channel method is: indicated power grade in the L1 head of the reduction descending SACCH of destination channel (following channel at a slow speed), or on former channel, send order and reduce the transmitting power of opposite end in destination channel.
Below in conjunction with specific embodiment the present invention is further elaborated.The power control of special-purpose channel in the access procedure of description GSM (GlobalSystem for Mobile Communications, global system for mobile communications) GSM.The invention is not restricted to this, can also be used for the GSM of other agreements (for example CDMA).As shown in Figure 8, the present invention controls the handling process sketch map of an embodiment of the method for transmitting power.The practical implementation step is following:
Step 101, the base station receives the Channel Request (channel request) from MS (travelling carriage) from uplink random access channel (RACH).
Step 102, base station are calculated the received signal level intensity indication (RSSI) and the error rate (BER) according to the Access Burst (access burst pulse) that is included in Channel Request (channel request); Computational methods are following:
RSSI equals the level mean value of 16 sampled points among the Access Burst;
Ratio of error between the bit stream that bit stream (bit stream) that BER equals to receive and decoding back and recompile obtain.
Step 103, according to the current interference fringe level value of BER calculating RACH channel, method is following:
According to agreement GSM 05.08 (Global System for Mobile Communications Radiosubsystem link control; The wireless subsystem controlling links of global system for mobile communications) regulation; BER is mapped to quality of reception grade (RQ); Then the RQ grade that draws is mapped to the interference fringe level value, thereby draws the current interference fringe level value of RACH channel.Be specially: the RQ grade is 0, and then the interference fringe level value is 1; The RQ grade is 1, and then the interference fringe level value is 2; The RQ grade is 2, and then the interference fringe level value is 3; The RQ grade is 3, and then the interference fringe level value is 4; The RQ grade be 4 and more than then the interference fringe level value be 5.
Step 104 judges whether RACH channel and DCCH (SDCCH) at a slow speed use same frequency.
If step 105 RACH and SDCCH channel use different frequent points, is obtained the historical interference fringe mean value of SDCCH channel, and the current interference level of SDCCH equals the maximum among the historical interference fringe mean value of current interference fringe level value of RACH and SDCCH channel.
Step 106, if RACH uses identical frequency with the SDCCH channel, then the interference level of SDCCH equals the historical interference fringe mean value of SDCCH channel; If temporarily can't get access to the historical interference fringe mean value of SDCCH, then the interference level of SDCCH equals the interference fringe level value of current RACH channel.
Step 107 is calculated the expection transmitting power of MS on SDCCH, and method is following:
If the interference fringe level of SDCCH then keeps the MS maximum transmission power constant greater than 1;
If the interference fringe level of SDCCH is 1, then further judge the RSSI value, if the RSSI value is lower than preset thresholding, then keep the MS maximum transmission power constant; Otherwise according to the difference of RSSI and preset thresholding, reduce the MS transmitting power, the MS transmitting power of reduction equals the difference of RSSI and preset thresholding, is equivalent to reduce maximum transmission power, but reduce certain limit is arranged, and can not reduce too much, the maximum 6db that reduces.Among this embodiment, the threshold value of interference fringe is made as 1, also can adopts other threshold values.
Step 108 according to the MS transmitting power that calculates, is provided with the power indication in the L1 head of SACCH (following channel at a slow speed) of SDCCH channel.
In the such scheme, when transmitting terminal when former channel inserts destination channel, the present invention can be before starting destination channel, the quick control transmitting terminal is in the transmitting power of destination channel.
Said method embodiment is corresponding with said device embodiment; The description of relevant portion gets final product among the part comparable device embodiment that in method embodiment, does not describe in detail, and the description of relevant portion gets final product among the part reference method embodiment that in device embodiment, does not describe in detail.
One of ordinary skill in the art will appreciate that; Realize that all or part of step in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium, and this program comprises the step like above-mentioned method embodiment when carrying out; Described storage medium; As: magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
In each method embodiment of the present invention; The sequence number of said each step can not be used to limit the sequencing of each step; For those of ordinary skills, under the prerequisite of not paying creative work, the priority of each step is changed also within protection scope of the present invention.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle according to the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (12)
1. a method of controlling transmitting power is applied to the scene of second network element from former channel access destination channel, it is characterized in that, comprising:
First network element receives the signal that second network element sends from former channel;
Said first network element generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value according to the signal that said second network element sends;
Said first network element generates the interference fringe horizontal estimated value of destination channel according to said current interference fringe level value;
Said first network element generates the transmitting power of said second network element in destination channel according to the interference fringe horizontal estimated value of said destination channel;
Said first network element sends to said second network element with said transmitting power, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
2. the method for control transmitting power according to claim 1; It is characterized in that; Said first network element is according to the signal that said second network element sends, and generates said first network element and comprises in the step that former channel receives the current interference fringe level value of the signal that second network element sends:
Said first network element calculates the error rate of the signal of said transmission according to the access burst pulse in the signal that is included in said transmission;
Said first network element calculates said first network element receives the signal of second network element transmission at former channel current interference fringe level value according to the error rate of the signal of said transmission.
3. the method for control transmitting power according to claim 1 is characterized in that, said first network element is according to said current interference fringe level value, and the step that generates the interference fringe horizontal estimated value of destination channel comprises:
Whether the frequency of the more said former channel of said first network element is consistent with the frequency of said destination channel;
If consistent, the interference fringe horizontal estimated value of the destination channel that then said first network element generates is: the historical interference fringe mean value of the signal that is sent by second network element that said current interference fringe level value or said first network element receive in destination channel;
If inconsistent, the interference fringe horizontal estimated value of the destination channel that then said first network element generates is: said current interference fringe level value and said first network element higher value in the historical interference fringe mean value of the signal that is sent by second network element that destination channel receives.
4. the method for control transmitting power according to claim 3; It is characterized in that; The interference fringe horizontal estimated value of the destination channel that said first network element generates is: the historical interference fringe mean value of the signal that sends by second network element that said current interference fringe level value or said first network element receive in destination channel, and concrete steps comprise:
Said first network element judges whether to get access to the historical interference fringe mean value of said first network element at the reception second network element signal of destination channel;
If judged result is for being that then said interference fringe horizontal estimated value is: the historical interference fringe mean value of the signal that sends by second network element that said first network element receives in destination channel; Otherwise said interference fringe horizontal estimated value is: said current interference fringe level value.
5. the method for control transmitting power according to claim 1 is characterized in that, said first network element generates said second network element and comprises in the step of the transmitting power of destination channel according to the interference fringe horizontal estimated value of said destination channel:
Said first network element generates said first network element receives the signal of second network element transmission at former channel level intensity indicated value according to the signal that said second network element sends;
Said first network element judges that the interference fringe horizontal estimated value of said destination channel whether greater than the interference fringe level thresholds, generates first judged result;
When said first judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element;
When said first judged result for not the time, whether said first network element judges said level intensity indicated value less than the level intensity threshold value, generates second judged result; When said second judged result when being, said second network element that said first network element generates in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said second judged result for not the time, said first network element generates the transmitting power of said second network element in destination channel according to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value.
6. the method for control transmitting power according to claim 1 is characterized in that, said first network element with the step that said transmitting power sends to said second network element is:
Said first network element perhaps is carried at the mode in the order with said transmitting power through transmitting power being carried at the mode in the descending destination channel, and said transmitting power is sent to said second network element.
7. a network element is applied to the scene of second network element from former channel access destination channel, it is characterized in that said network element is first network element, comprising:
Receiving element is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
The transmitting power generation unit is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
8. network element according to claim 7 is characterized in that, said interference fringe level value generation unit comprises:
Receive subelement, be used for calculating the error rate of the signal of said transmission according to the access burst pulse that is included in the signal of said transmission;
Computation subunit is used for the error rate according to the signal of said transmission, calculates said first network element receives the signal of second network element transmission at former channel current interference fringe level value.
9. network element according to claim 7 is characterized in that, said interference fringe horizontal estimated value generation unit comprises:
Compare subelement, whether the frequency that is used for more said former channel is consistent with the frequency of said destination channel;
Interference fringe horizontal estimated value generates subelement; Be used for when comparative result is consistent, the interference fringe horizontal estimated value of the destination channel of generation is: the historical interference fringe mean value of said current interference fringe level value or the signal that is sent by second network element that receives in destination channel for said first network element; When inconsistent, the interference fringe horizontal estimated value of the destination channel of generation is: said current interference fringe level value and said first network element higher value in the historical interference fringe mean value of the signal that is sent by second network element that destination channel receives.
10. network element according to claim 7 is characterized in that, said transmitting power generation unit comprises:
Level intensity indicated value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel level intensity indicated value;
First judgment sub-unit, whether the interference fringe horizontal estimated value that is used to judge said destination channel generates first judged result greater than the interference fringe level thresholds;
Second judgment sub-unit is used to judge that said level intensity indicated value whether less than the level intensity threshold value, generates second judged result;
Transmitting power generates subelement, be used for when said first judged result when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result for not, and said second judged result is when being, said second network element of generation in the transmitting power of destination channel is: the maximum transmission power of said second network element; When said first judged result is not; Said second judged result is not for the time; According to the maximum transmission power of said second network element and the difference between said level intensity indicated value and the said level intensity threshold value, generate the transmitting power of said second network element in destination channel.
11. a system that controls transmitting power is applied to the scene of second network element from former channel access destination channel, it is characterized in that, comprising: first network element and second network element;
Said first network element comprises:
Receiving element is used for receiving the signal that second network element sends from former channel;
Interference fringe level value generation unit is used for the signal according to said second network element transmission, generates said first network element receives the signal of second network element transmission at former channel current interference fringe level value;
Interference fringe horizontal estimated value generation unit is used for according to said current interference fringe level value, generates the interference fringe horizontal estimated value of destination channel;
The transmitting power generation unit is used for the interference fringe horizontal estimated value according to said destination channel, generates the transmitting power of said second network element in destination channel;
Transmitting element is used for said transmitting power is sent to said second network element, makes said second network element when former channel inserts destination channel, sends signal for said first network element in said destination channel with said transmitting power.
12. the system of control transmitting power according to claim 11 is characterized in that, said first network element is the base station, and said second network element is a travelling carriage.
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| CN1430426A (en) * | 2001-12-29 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Mobile communication adaptive fast power control method |
| CN1870455A (en) * | 2005-05-24 | 2006-11-29 | 上海原动力通信科技有限公司 | Method of power control for mobile communication system |
| CN101442796A (en) * | 2008-12-29 | 2009-05-27 | 华为技术有限公司 | Method, apparatus and system for adjusting emission power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1430426A (en) * | 2001-12-29 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Mobile communication adaptive fast power control method |
| CN1870455A (en) * | 2005-05-24 | 2006-11-29 | 上海原动力通信科技有限公司 | Method of power control for mobile communication system |
| CN101442796A (en) * | 2008-12-29 | 2009-05-27 | 华为技术有限公司 | Method, apparatus and system for adjusting emission power |
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