CN101742539B - Wireless resource allocation method and system - Google Patents
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Abstract
The embodiment of the invention discloses a wireless resource allocation method and a system, and the method comprises the steps of receiving data signals transmitted by a transmitting end; detecting the signal-to-noise ratio of the received signals on the data signals; judging the validity of a sub-channel which corresponds to the data signals according to the detection result of the signal-to-noise ratio of the signals; using a base station for re-allocating the sub-channel when the sub-channel which corresponds to the data signals is invalid; and further adjusting the number of transmitting antennas of the data signals of the transmitting end when the sub-channel which corresponds to the data signals is valid. The technical scheme provided by the implementation of the invention can carry out the detection of wireless resources and transmission quality through the relevant parameters of the data signals transmitted in the system, and appropriately adjust the allocation of the wireless resources according to the detection result, thereby improving the performances of the whole system and ensuring the smooth wireless transmission.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and a system for configuring radio resources.
Background
In recent years, with the continuous development of wireless communication networks and technologies, the demand of high-speed and high-quality services is remarkably increased, but at the same time, the contradiction between the sharply increased service demand and the limited bandwidth resources is increasingly prominent. As a technology for fully utilizing spatial domain resources, multi-antenna transmission/Multiple Input Multiple Output (MIMO) becomes a technology that is widely focused and adopted in future wireless communication systems due to the characteristics of effectively improving system data transmission rate and spectral efficiency, improving communication quality, and the like. In addition, the Orthogonal Frequency Division Multiplexing (OFDM) technology improves the Frequency spectrum utilization rate of the carrier, and enhances the capability of resisting Frequency selective fading and narrow-band interference. Has become a key technology of the next generation mobile communication. Meanwhile, with the development of hardware development technologies such as large-scale integrated circuits (e.g., FPGAs) and on-chip designs, and the advent of chips with high-speed processing capability, wireless communication systems using multi-carrier and multi-antenna technologies have been realized, and scheduling and using of resources have also been extended to multiple dimensions such as time, frequency, and space.
However, in the current multi-antenna wireless communication system, generally, the monitoring and adaptive processing of signals are implemented in the physical layer, and the management and allocation of resources are implemented in the network and Medium Access Control (MAC) layer. Therefore, the existing adaptive coded modulation techniques can improve the performance of the system to a large extent, but have many disadvantages in terms of resource allocation and the like.
Meanwhile, the frequency selectivity of the channel is increased due to the increase of the bandwidth, the fading is obvious in some special scenes, and if the wireless resources cannot be reasonably configured, the receiving performance of the whole system is reduced, so that the smoothness of wireless transmission is difficult to ensure.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and a system for configuring radio resources to implement reasonable configuration of radio resources, so as to ensure smooth radio transmission.
The embodiment of the invention is realized as follows:
the embodiment of the invention provides a wireless resource allocation method, which comprises the following steps:
receiving a data signal sent by a sending end;
detecting the signal-to-noise ratio of the received signal of the data signal;
judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal;
when the sub-channel corresponding to the data signal is invalid, the base station redistributes the sub-channel;
when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal;
when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the sending end to increase the high block error rate time window threshold value, reduce the low block error rate time window threshold value and inform the sending end to reduce the number of data signal sending antennas;
and when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the sending end to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the sending end to increase the number of data signal sending antennas.
The judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal comprises:
comparing the detection result of the signal to noise ratio with a preset channel effective threshold, wherein when the detection result of the signal to noise ratio is greater than the channel effective threshold, the sub-channel corresponding to the data signal is effective; and when the detection result of the signal-to-noise ratio of the signal is smaller than the effective threshold value of the channel, the sub-channel corresponding to the data signal is invalid.
The base station reassigns the sub-channels, including:
and the base station performs sub-channel reallocation by adopting a proportional fair PF algorithm.
The embodiment of the invention provides a wireless resource allocation system, which comprises: a base station and a mobile terminal, wherein,
when the base station is a data signal sending end, the base station is used for sending a data signal to the mobile terminal; when the sub-channel corresponding to the data signal is invalid, the sub-channel is redistributed; when the sub-channel corresponding to the data signal is effective, adjusting a block error rate time window threshold value and adjusting the number of data signal transmitting antennas according to a request message of the mobile terminal, wherein when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than the preset high block error rate time window threshold value, the high block error rate time window threshold value is increased, the low block error rate time window threshold value is decreased, and the number of the data signal transmitting antennas is reduced; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
the mobile terminal is used for receiving the data signal sent by the base station; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, informing the base station to redistribute the sub-channel; when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the base station to increase the high block error rate time window threshold value, decrease the low block error rate time window threshold value and informing the base station to decrease the number of data signal sending antennas; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the base station to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the base station to increase the number of data signal sending antennas;
or,
when the mobile terminal is a sending end of a data signal, the mobile terminal is used for sending the data signal to the base station; when the sub-channel corresponding to the data signal is effective, adjusting a block error rate time window threshold value and the number of data signal transmitting antennas according to a request message of the base station, wherein when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than the preset high block error rate time window threshold value, the high block error rate time window threshold value is increased, the low block error rate time window threshold value is reduced, and the number of the data signal transmitting antennas is reduced; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
the base station is used for receiving the data signal sent by the mobile terminal; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, reallocating the sub-channel; when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the mobile terminal to increase the high block error rate time window threshold value, decrease the low block error rate time window threshold value and informing the mobile terminal to decrease the number of data signal sending antennas; and when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the mobile terminal to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the mobile terminal to increase the number of data signal sending antennas.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages and characteristics: the technical scheme provided by the embodiment of the invention comprises the steps of firstly detecting the signal-to-noise ratio of a received signal by a received data signal, judging whether a sub-channel corresponding to the data signal is effective or not according to the detection result, and if the sub-channel is ineffective, reallocating the sub-channels by a base station; if the time window is valid, the time window threshold value of the block error rate of the sending end and the number of the data signal sending antennas can be further adjusted. The technical scheme provided by the embodiment can detect the wireless resources and the data transmission quality through the related parameters of the data signals transmitted in the system, and can properly adjust the configuration of the wireless resources according to the detection result, thereby improving the performance of the whole system and ensuring the smoothness of wireless transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a radio resource allocation method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radio resource allocation system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;
fig. 7 is a flowchart of a radio resource allocation method according to a specific scenario according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for configuring radio resources, where a specific flow of the method is shown in fig. 1, and the method includes:
step 101: receiving a data signal sent by a sending end;
when the base station transmits a data signal to the mobile terminal, in step 101, the mobile terminal receives the data signal transmitted by the base station; however, when the mobile terminal transmits a data signal to the base station, the base station receives the data signal transmitted from the mobile terminal in step 101, and the transmitting side in the following steps may be the base station or the mobile terminal, and the receiving side is the same.
Step 102: detecting the signal-to-noise ratio of the received signal of the data signal;
step 103: judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal;
in step 103, when the receiving end determines the validity of the sub-channel corresponding to the data signal according to the detection result of the signal to noise ratio, the following method may be adopted:
the receiving end compares the detection result of the signal-to-noise ratio with a preset channel effective threshold, when the detection result of the signal-to-noise ratio is greater than the preset channel effective threshold, the sub-channel corresponding to the data signal is effective, and step 104 is executed; when the detection result of the signal-to-noise ratio is smaller than the set channel valid threshold, the sub-channel corresponding to the data signal is invalid, and step 107 is executed.
Step 104: detecting the block error rate of the data signal;
after the detection of the block error rate of the data signal is completed in step 104, step 105 or step 106 may be performed according to the detection result.
Step 105: when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the sending end to increase the high block error rate time window threshold value, reduce the low block error rate time window threshold value and inform the sending end to reduce the number of data signal sending antennas;
step 106: when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the sending end to reduce the high block error rate time window threshold value, increase the high block error rate time window threshold value and informing the sending end to increase the number of data signal sending antennas;
step 107: the base station performs reallocation of subchannels.
In step 107, when the base station is the sending end, since the detection of the sub-channel validity is performed by the mobile terminal, at this time, the mobile terminal first needs to send a message requiring to reallocate the sub-channel to the base station, and the base station performs the adjustment of the sub-channel again according to the message; when the mobile terminal is the sending end, since the detection of the sub-channel validity is performed by the base station, the base station can directly perform the sub-channel reallocation according to the detection result.
The technical scheme provided by the embodiment of the invention comprises the steps of firstly detecting the signal-to-noise ratio of a received signal by a received data signal, judging whether a sub-channel corresponding to the data signal is effective or not according to the detection result, and if the sub-channel is ineffective, reallocating the sub-channels by a base station; if the time window is valid, the time window threshold value of the block error rate of the sending end and the number of the data signal sending antennas can be further adjusted. The technical scheme provided by the embodiment can detect the wireless resources and the data transmission quality through the related parameters of the data signals transmitted in the system, and can properly adjust the configuration of the wireless resources according to the detection result, thereby improving the performance of the whole system and ensuring the smoothness of wireless transmission.
Correspondingly, an embodiment of the present invention further provides a radio resource configuration system, which includes the structure shown in fig. 2: a base station 201 and a mobile terminal 202, wherein:
when the base station 201 is a data signal transmitting end:
a base station 201, configured to send a data signal to the mobile terminal 202; when the sub-channel corresponding to the data signal is invalid, the sub-channel is redistributed; when the sub-channel corresponding to the data signal is valid, adjusting a block error rate time window threshold value and adjusting the number of data signal transmitting antennas according to a request message of the mobile terminal 202, wherein when a detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than the preset high block error rate time window threshold value, the high block error rate time window threshold value is increased, the low block error rate time window threshold value is decreased, and the number of the data signal transmitting antennas is decreased; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
a terminal 202, configured to receive a data signal sent by the base station 201; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, notifying the base station 201 to reallocate the sub-channel; when the sub-channel corresponding to the data signal is valid, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold and the duration of the situation is longer than a preset high block error rate time window threshold, notifying the base station 201 to increase the high block error rate time window threshold, decrease the low block error rate time window threshold, and notifying the base station 201 to decrease the number of data signal transmitting antennas; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the base station 201 to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value, and informing the base station 201 to increase the number of data signal transmitting antennas;
when the mobile terminal 202 is a data signal transmitting end:
a mobile terminal 202, configured to send a data signal to the base station 201; when the sub-channel corresponding to the data signal is valid, adjusting a block error rate time window threshold and the number of data signal transmitting antennas according to the request message of the base station 201, wherein when the detection result of the block error rate is higher than a preset high block error rate threshold and the duration of the situation is longer than the preset high block error rate time window threshold, the high block error rate time window threshold is increased, the low block error rate time window threshold is decreased, and the number of data signal transmitting antennas is decreased; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
a base station 201, configured to receive a data signal sent by the mobile terminal 202; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, reallocating the sub-channel; when the sub-channel corresponding to the data signal is valid, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold and the duration of the situation is longer than a preset high block error rate time window threshold, notifying the mobile terminal 202 to increase the high block error rate time window threshold, decrease the low block error rate time window threshold, and notifying the mobile terminal 202 to decrease the number of data signal transmitting antennas; when the detection result of the block error rate is lower than the preset low block error rate threshold and the duration of the condition is smaller than the preset low block error rate time window threshold, the mobile terminal 202 is notified to decrease the high block error rate time window threshold, increase the low block error rate time window threshold, and the mobile terminal 202 is notified to increase the number of data signal transmitting antennas.
The radio resource configuration system provided in this embodiment may be used to execute the radio resource configuration method provided in this embodiment of the present invention. The process of configuring the radio resource by the radio resource configuration system may refer to the radio resource configuration method provided in the embodiment of the present invention.
In the radio resource allocation system provided in this embodiment, first, a received data signal is subjected to signal-to-noise ratio detection, and whether a sub-channel corresponding to the data signal is valid is determined according to a detection result, and if the sub-channel is invalid, a base station reallocates the sub-channel; if the data signal is valid, the threshold value of the time window of the block error rate and the number of the data signal sending antennas can be further adjusted. The technical scheme provided by the embodiment can detect the wireless resources and the data transmission quality through the related parameters of the data signals transmitted in the system, and can properly adjust the configuration of the wireless resources according to the detection result, thereby improving the performance of the whole system and ensuring the smoothness of wireless transmission.
An embodiment of the present invention further provides a base station, where the base station includes a structure shown in fig. 3: a first sending unit 301, a first receiving unit 302, a first sub-channel allocating unit 303, a second receiving unit 304, a first window adjusting unit 305, and a first antenna adjusting unit 306, wherein:
a first transmitting unit 301, configured to transmit a data signal to a mobile terminal;
a first receiving unit 302, configured to receive a message, which is sent by the mobile terminal and requires sub-channel reallocation, when a sub-channel corresponding to the data signal is invalid;
a first subchannel allocation unit 303, configured to perform subchannel reallocation;
a second receiving unit 304, configured to receive a message sent by the mobile terminal and used for adjusting the number of data signal sending antennas;
a first window adjusting unit 305, configured to adjust a block error rate time window threshold;
a first antenna adjusting unit 306, configured to adjust the number of data signal transmitting antennas.
Correspondingly, an embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes a structure shown in fig. 4: third receiving section 401, first snr detecting section 402, first determining section 403, second transmitting section 404, first block error rate detecting section 405, and third transmitting section 406, wherein,
a third receiving unit 401, configured to receive a data signal sent by a base station;
a first snr detecting unit 402, configured to perform received signal to noise ratio detection on the data signal;
a first determining unit 403, configured to determine, according to a detection result of the signal-to-noise ratio of the signal, validity of a sub-channel corresponding to the data signal;
a second sending unit 404, configured to send a message requesting sub-channel reallocation to the base station when the sub-channel corresponding to the data signal is invalid;
a first block error rate detection unit 405, configured to detect a block error rate of the data signal when a sub-channel corresponding to the data signal is valid;
a third sending unit 406, configured to send, to the base station, a message that requires adjustment of the block error rate time window threshold and the number of data signal sending antennas according to the detection result of the block error rate.
The above method is a case where the base station is a transmitting end, and when the mobile terminal is a transmitting end and the base station is a receiving end:
the present embodiment further provides a base station, which includes the structure shown in fig. 5: a fourth receiving section 501, a second snr detecting section 502, a second determining section 503, a second subchannel adjusting section 504, a second block error rate detecting section 505, and a fourth transmitting section 506, wherein,
a fourth receiving unit 501, configured to receive a data signal sent by a mobile terminal;
a second snr detecting unit 502, configured to perform received signal snr detection on the data signal;
a second determining unit 503, configured to determine, according to a detection result of the signal-to-noise ratio, validity of a sub-channel corresponding to the data signal;
a second subchannel adjusting unit 504, configured to perform subchannel reallocation when a subchannel corresponding to the data signal is invalid;
a second block error rate detection unit 505, configured to detect a block error rate of the data signal when the sub-channel corresponding to the data signal is valid;
a fourth sending unit 506, configured to send, to the mobile terminal, a message for adjusting the block error rate time window threshold and the number of data signal sending antennas according to the detection result of the block error rate.
Correspondingly, the present embodiment further provides a mobile terminal, which includes a fifth transmitting unit 601, a fifth receiving unit 602, a second window adjusting unit 603, and a second antenna adjusting unit 604, where:
a fifth transmitting unit 601, configured to transmit a data signal to a base station;
a fifth receiving unit 602, configured to receive a message sent by the base station and used for adjusting the number of data signal sending antennas;
a second window adjusting unit 603, configured to adjust a block error rate time window threshold;
a second antenna adjusting unit 604, configured to adjust a data signal transmitting antenna.
In this embodiment, it is assumed that the base station is a transmitting end, the mobile terminal is a receiving end, and the base station uses N antennas and F subcarriers to transmit data. To implement the technical solution provided by the present invention, the steps shown in fig. 7 are executed:
step 701: establishing a wireless link between the base station and the mobile terminal, and distributing sub-channels;
in step 701, a radio link needs to be established between the base station and the mobile terminal, for example, the radio link between the base station and the mobile terminal may be established in a random access manner, and in this embodiment, since a multi-subcarrier manner is used for data transmission, the base station also needs to perform a sub-channel allocation operation, and here, a Proportional Fair (PF) algorithm or a Round Robin algorithm may be used for sub-channel allocation, and a specific method is not particularly limited in this embodiment.
Step 702: the base station transmits a data signal to the mobile terminal by using the established wireless link;
in step 702, as can be known from the foregoing, in this embodiment, the base station uses N antennas to transmit data, and it should be noted that, in the process of transmitting data, the following principle needs to be followed:
firstly, detecting the number of independent data streams to be transmitted, supposing that the number of the independent data streams to be transmitted is N, performing modular operation by using the total number of the antennas and the number of the independent data streams as the base station comprises N antennas, specifically, Z is N mod N, wherein Z is the number of the maximum available repeated independent data stream groups, when Z is 1, selecting a codebook according to the number of the independent data streams to be transmitted, encoding according to the selected codebook, and finally transmitting; and when the value of Z is larger than 1, selecting the number of repeated data streams of the actual data group meeting the requirements of the channel condition according to the current channel condition, selecting a corresponding codebook, coding according to the selected codebook, and finally transmitting.
Step 703: the mobile terminal receives the data signal sent by the base station, detects the sub-channel validity of the data signal and decodes the received data signal;
in step 703, after receiving the data signal sent by the base station, the mobile terminal first obtains a received signal to noise ratio SINR corresponding to the data signal through the data signaliAnd the obtained value is compared with a preset channel effective threshold SINRfBy contrast, when SINRiSINR greater than a channel effectiveness thresholdfIf yes, it indicates that the sub-channel corresponding to the data signal is valid, and step 704 is executed; when the SINR isiSINR less than a channel effectiveness thresholdfIf so, it indicates that the sub-channel corresponding to the data signal is invalid, and step 711 is performed.
In this step, it should be noted that the carrier availability threshold SINR is setfThe acquisition may be performed according to the performance of the current system, or may be set according to the previous statistical result of the system, and in this embodiment, no special requirement is made.
Step 704: the mobile terminal detects the block error rate of the received data signal and compares the detection result with a preset related threshold;
in step 704, the mobile terminal obtains the block error rate of the received data signal, and then compares the block error rate with a predetermined block error rateComparing the rate thresholds, wherein the block error rate threshold can be divided into a high block error rate threshold BLERHAnd a low block error rate threshold BLERLWhen the block error rate of the data signal is higher than the set high block error rate BLERHAnd the duration of this situation exceeds the preset high block error rate time window threshold value THIf yes, go to step 705; when the block error rate of the data signal is lower than the set low block error rate BLERLAnd the duration of this situation exceeds the preset low block error rate time window threshold value TLIf so, step 707 is executed. And when the detection result belongs to other conditions, maintaining the existing data transmission mode.
Step 705: the mobile terminal sends a message for adjusting the threshold value of the block error rate time window to the base station so as to reduce the number of data signal sending antennas;
in step 705, the mobile terminal may carry the monitoring result of the block error rate in the block error rate time window threshold adjustment message, and trigger the base station to perform the block error rate time window threshold adjustment according to the result.
Step 706: the base station adjusts the threshold value of the block error rate time window according to the message sent by the mobile terminal;
in step 706, when the base station adjusts the threshold of the block error rate time window, it first needs to adjust the performance factor of the communication link, where m isHFor the current high performance factor of the communication link, mLFor the low performance factor of the current communication link, after the performance factor of the communication link is adjusted, the new high performance factor m of the communication linkH’＝mH+1 and a new low performance factor m for the communication linkL’＝mL-1。
After the adjustment of the communication link performance factor is completed, according to the new communication link performance factor, the adjustment of the block error rate time window threshold is carried out by adopting the following modes:
introducing a window adjustment factor Δ THAnd Δ TLWherein, Δ THAnd Δ TLObtained by the following method:
wherein, a, b, TMAXHAnd TMAXLThe constant factor can be obtained in a statistical manner according to the actual requirements of the system.
After the calculation of the window adjustment factor is completed, the block error rate time window threshold value can be adjusted according to the obtained window adjustment factor, specifically: adjusted block error rate time window threshold TH′＝TMAXH-ΔTH，TL′＝TMAXL-ΔTL。
Step 707: the base station reduces the number of data information transmitting antennas;
in step 707, after completing the adjustment of the threshold of the block error rate time window, the base station should reduce the number of data information transmitting antennas, that is, reduce the number of independent data streams, where the number of data signal transmitting antennas cannot be less than 1 during the process of reducing the number of data signal transmitting antennas.
Step 708: the mobile terminal sends a message for adjusting the threshold value of the block error rate time window to the base station so as to increase the number of data signal sending antennas;
in step 708, the mobile terminal may carry the monitoring result of the block error rate in the block error rate time window threshold adjustment message, and trigger the base station to perform the block error rate time window threshold adjustment according to the result.
Step 709: the base station adjusts the threshold value of the block error rate time window according to the message sent by the mobile terminal;
in step 706, when the base station adjusts the threshold of the block error rate time window, it first needs to adjust the performance factor of the communication link, where m isHFor the current high performance factor of the communication link, mLFor the low performance factor of the current communication link, after the performance factor of the communication link is adjusted, the new high performance factor m of the communication linkH’＝mH-1 and a new low performance factor m for the communication linkL’＝mL+1。
After the adjustment of the communication link performance factor is completed, according to the new communication link performance factor, the adjustment of the block error rate time window threshold is carried out by adopting the following modes:
introducing a window adjustment factor Δ THAnd Δ TLWherein, Δ THAnd Δ TLObtained by the following method:
wherein, a, b, TMAXHAnd TMAXLThe constant factor can be obtained in a statistical manner according to the actual requirements of the system.
After the calculation of the window adjustment factor is completed, the block error rate time window threshold value can be adjusted according to the obtained window adjustment factor, specifically: adjusted block error rate time window threshold TH′＝TMAXH-ΔTH，TL′＝TMAXL-ΔTL。
Step 710: the base station increases the number of data information transmitting antennas;
in step 710, after completing the adjustment of the window, the base station needs to increase the number of data information transmitting antennas, that is, the number of independent data streams to be transmitted, where the number of data signal transmitting antennas cannot exceed the total number N of antennas during the process of increasing the number of data signal transmitting antennas.
In step 707 and step 710, both belonging to the base station, the number of data signal transmitting antennas is changed, and since the selection of the transmitting antennas has been described in step 702, no further description is given here.
Step 711: the mobile terminal sends a message for reallocating the sub-channels to the base station;
in step 711, the mobile terminal detects the validity of the sub-channel according to step 703, and when the detection result indicates that the sub-channel is invalid, the mobile terminal sends a message for performing sub-channel reallocation to the base station.
Step 712: and the base station receives the message for sub-channel reallocation sent by the mobile terminal and reallocates the sub-channels according to the message.
In step 712, the method for allocating the sub-channels by the base station is already described in step 701, and is not described herein again.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media capable of storing program codes, such as ROM (Read-Only Memory), RAM (random access Memory), magnetic disk, and optical disk.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A method for configuring radio resources, comprising:
receiving a data signal sent by a sending end;
detecting the signal-to-noise ratio of the received signal of the data signal;
judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal;
when the sub-channel corresponding to the data signal is invalid, the base station redistributes the sub-channel;
when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal;
when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the sending end to increase the high block error rate time window threshold value, reduce the low block error rate time window threshold value and inform the sending end to reduce the number of data signal sending antennas;
and when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the sending end to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the sending end to increase the number of data signal sending antennas.
2. The method according to claim 1, wherein said determining the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal comprises:
comparing the detection result of the signal to noise ratio with a preset channel effective threshold, wherein when the detection result of the signal to noise ratio is greater than the channel effective threshold, the sub-channel corresponding to the data signal is effective; and when the detection result of the signal-to-noise ratio of the signal is smaller than the effective threshold value of the channel, the sub-channel corresponding to the data signal is invalid.
3. The method of claim 1, wherein the base station performs subchannel reallocation, comprising:
and the base station performs sub-channel reallocation by adopting a proportional fair PF algorithm.
4. A method for configuring radio resources, the method comprising:
a base station sends a data signal to a mobile terminal; when the sub-channel corresponding to the data signal is invalid, the sub-channel is redistributed; when the sub-channel corresponding to the data signal is effective, adjusting a block error rate time window threshold value and adjusting the number of data signal transmitting antennas according to a request message of the mobile terminal, wherein when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than the preset high block error rate time window threshold value, the high block error rate time window threshold value is increased, the low block error rate time window threshold value is decreased, and the number of the data signal transmitting antennas is reduced; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
the mobile terminal receives a data signal sent by the base station; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, informing the base station to redistribute the sub-channel; when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the base station to increase the high block error rate time window threshold value, decrease the low block error rate time window threshold value and informing the base station to decrease the number of data signal sending antennas; and when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the base station to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the base station to increase the number of data signal transmitting antennas.
5. A method for configuring radio resources, the method comprising:
the mobile terminal sends a data signal to the base station; when the sub-channel corresponding to the data signal is effective, adjusting a block error rate time window threshold value and the number of data signal transmitting antennas according to a request message of the base station, wherein when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than the preset high block error rate time window threshold value, the high block error rate time window threshold value is increased, the low block error rate time window threshold value is reduced, and the number of the data signal transmitting antennas is reduced; when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, reducing the high block error rate time window threshold value, increasing the low block error rate time window threshold value and increasing the number of data signal sending antennas;
the base station receives a data signal sent by the mobile terminal; detecting the signal-to-noise ratio of the received signal of the data signal; judging the validity of the sub-channel corresponding to the data signal according to the detection result of the signal-to-noise ratio of the signal; when the sub-channel corresponding to the data signal is invalid, reallocating the sub-channel; when the sub-channel corresponding to the data signal is effective, detecting the block error rate of the data signal, and when the detection result of the block error rate is higher than a preset high block error rate threshold value and the duration of the condition is longer than a preset high block error rate time window threshold value, informing the mobile terminal to increase the high block error rate time window threshold value, decrease the low block error rate time window threshold value and informing the mobile terminal to decrease the number of data signal sending antennas; and when the detection result of the block error rate is lower than a preset low block error rate threshold value and the duration of the condition is less than a preset low block error rate time window threshold value, informing the mobile terminal to reduce the high block error rate time window threshold value, increase the low block error rate time window threshold value and informing the mobile terminal to increase the number of data signal sending antennas.
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| CN102364946B (en) * | 2011-11-17 | 2014-09-10 | 瑞斯康达科技发展股份有限公司 | Method and device for judging effectiveness of signal |
| CN103379634B (en) * | 2012-04-20 | 2018-01-30 | 中兴通讯股份有限公司 | A kind of gsm system improves the method and system of capacity under multi-diversity |
| CN103703851B (en) * | 2012-11-15 | 2018-02-02 | 华为技术有限公司 | A kind of method, equipment and the system of dividing frequency resource section |
| CN104657119B (en) * | 2013-11-18 | 2018-08-10 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN104754716B (en) * | 2013-12-26 | 2019-01-08 | 华为技术有限公司 | Antenna assignment method and device |
| CN104113366A (en) * | 2014-07-29 | 2014-10-22 | 北京邮电大学 | Antenna selection method aiming at energy effectiveness of Massive MIMO (Multiple Input Multiple Output) communication system |
| EP3285422A4 (en) * | 2015-04-15 | 2018-12-19 | Mitsubishi Electric Corporation | Antenna apparatus |
| WO2017070956A1 (en) * | 2015-10-30 | 2017-05-04 | 华为技术有限公司 | Data transmission method and device |
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