WO2024108533A1 - Procédé et appareil de traitement de signal, et support de stockage - Google Patents

Procédé et appareil de traitement de signal, et support de stockage Download PDF

Info

Publication number
WO2024108533A1
WO2024108533A1 PCT/CN2022/134268 CN2022134268W WO2024108533A1 WO 2024108533 A1 WO2024108533 A1 WO 2024108533A1 CN 2022134268 W CN2022134268 W CN 2022134268W WO 2024108533 A1 WO2024108533 A1 WO 2024108533A1
Authority
WO
WIPO (PCT)
Prior art keywords
sinr
sinrs
rrus
rru
signal
Prior art date
Application number
PCT/CN2022/134268
Other languages
English (en)
Chinese (zh)
Inventor
李长庚
鲁绍贵
陈秀
黄海清
鲁志兵
Original Assignee
深圳市运联通通信服务有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市运联通通信服务有限公司 filed Critical 深圳市运联通通信服务有限公司
Priority to PCT/CN2022/134268 priority Critical patent/WO2024108533A1/fr
Publication of WO2024108533A1 publication Critical patent/WO2024108533A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Definitions

  • the present disclosure generally relates to the field of communications, and more specifically to a signal processing method, device, and storage medium.
  • the wireless extended pico base station is a distributed, miniaturized, low-power cellular base station for indoor scenarios. It usually adopts the networking mode of BBU (Base Band Unit) + EU (Extended Unit) + RRU (Remote Radio Unit), as shown in Figure 1.
  • BBU Base Band Unit
  • EU Extended Unit
  • RRU Remote Radio Unit
  • the terminal is often only in the signal coverage area of one or several RRUs.
  • the uplink signal sent by the terminal to the base station will only be received by one RRU or several adjacent RRUs, which may belong to the same EU or different EUs.
  • a signal selection algorithm is often used to ensure that the performance will not be lost.
  • the RF signals of all RRUs connected to it can only be merged and compressed in the EU.
  • the present disclosure provides a signal processing method, which includes: an extension unit EU obtains a frequency domain signal converted from a time domain signal sent by N remote radio frequency units RRU, wherein the N RRUs are mounted under the EU, and a terminal UE is within the coverage of M RRUs among the N RRUs; M is a positive integer greater than 1, and M is less than or equal to N; the EU measures the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal to obtain a measurement result, wherein the measurement result includes a signal to interference plus noise ratio SINR under each of the RRUs; the EU combines the top L SINRs selected from the measurement results, and sends the combined processing result and the equivalent SINR obtained based on the L SINRs to a baseband unit BBU, wherein the value of L is a positive integer greater than 1 and less than N.
  • the present disclosure provides a signal processing method, which includes: the BBU receives a combined processing result sent by a first target EU and an equivalent SINR obtained by the first target EU based on L SINRs, wherein the combined processing result is obtained by combining L SINRs with the top SINR values selected by the first target EU from the measurement results, and the measurement result is obtained by measuring the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal, and the frequency domain signal is converted from a time domain signal sent by N RRUs mounted under the EU; the first target EU is any EU under the BBU; the BBU combines the combined processing result and the equivalent SINR sent by the second target EU, and decodes the UE based on the combined processing result, wherein the second target EU is the EU corresponding to the M RRUs covering the UE.
  • the present disclosure provides a signal processing device, which is applied to the EU side, and includes: an acquisition module, configured to acquire a frequency domain signal converted from a time domain signal sent by N remote radio frequency units RRUs, wherein the N RRUs are mounted under the EU, and the terminal UE is within the coverage range of M RRUs among the N RRUs; M is a positive integer greater than 1, and M is less than or equal to N; a measurement module, configured to measure the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal to obtain a measurement result, wherein the measurement result includes a signal to interference plus noise ratio SINR under each of the RRUs; a first processing module, configured to merge L SINRs with the top SINR values selected from the measurement results, and send the merged processing result and the equivalent SINR obtained based on the L SINRs to the BBU, wherein the value of L is a positive integer greater than 1 and less than N.
  • an acquisition module configured to acquire a frequency domain signal converted from a time domain signal sent by
  • the present disclosure provides a signal processing device, which is applied to the BBU side, and includes: a receiving module, configured to receive a combined processing result sent by a first target EU and an equivalent SINR obtained by the first target EU based on L SINRs, wherein the combined processing result is obtained by combining L SINRs with the top SINR values selected by the first target EU from the measurement results, and the measurement result is obtained by measuring the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal, and the frequency domain signal is converted from a time domain signal sent by N RRUs mounted under the EU; the first target EU is any EU under the BBU; a second processing module, configured to combine the combined processing result and the equivalent SINR sent by the second target EU, and decode the UE based on the combined processing result, wherein the second target EU is the EU corresponding to the M RRUs covering the UE.
  • a receiving module configured to receive a combined processing result sent by a first target EU and an equivalent SINR obtained by the first target EU based on L SI
  • the present disclosure provides an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;
  • a memory configured to store a computer program
  • the processor is configured to implement the method steps described in the present disclosure when executing the program stored in the memory.
  • the present disclosure provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method steps described in the present disclosure are implemented.
  • FIG1 is a schematic diagram of a networking structure of a wireless extended pico base station in the prior art
  • FIG2 is a schematic diagram of a time domain or frequency domain proportional/weighted merging algorithm processing in the prior art
  • FIG3 is a flow chart of a signal processing method according to an embodiment of the present disclosure.
  • FIG4 is a second flow chart of a signal processing method provided by an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of a processing method for a multi-path frequency domain signal/baseband selection merging algorithm applicable to frequency domain multi-users in one embodiment of the present disclosure
  • FIG6 is a schematic diagram of a network structure of a wireless extended pico base station in an example of the present disclosure
  • FIG. 7 is one of the schematic diagrams of EU reporting in an example of the present disclosure.
  • FIG8 is a second schematic diagram of the networking structure of a wireless extended pico base station in an example of the present disclosure.
  • FIG9 is a second schematic diagram of EU reporting in an example of the present disclosure.
  • FIG10 is a schematic diagram of a structure of a signal processing device according to an embodiment of the present disclosure.
  • FIG11 is a second structural diagram of a signal processing device provided by an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure.
  • a time domain or frequency domain proportional/weighted combining algorithm is used to combine the signals of all RRUs.
  • a schematic diagram of a time domain or frequency domain proportional/weighted combining algorithm is shown in FIG2 .
  • Y represents the signal after EU merging
  • Xk represents the signal of each RRU before merging
  • Y represents the signal after EU merging
  • Xk represents the signal of each RRU before merging
  • FIG3 is a flow chart of a signal processing method provided by an embodiment of the present disclosure. As shown in FIG3 , the steps of the method include:
  • Step 302 the EU obtains a frequency domain signal converted from a time domain signal sent by N remote radio units RRUs, wherein the N RRUs are mounted under the EU, and the terminal UE is within the coverage of M RRUs among the N RRUs; M is a positive integer greater than 1, and M is less than or equal to N;
  • Step 304 the EU measures the signal strength within the bandwidth corresponding to the UE on the frequency domain signal to obtain a measurement result, wherein the measurement result includes a signal to interference plus noise ratio SINR under each RRU;
  • the EU combines the top L SINRs selected from the measurement results, and sends the combined processing result and the equivalent SINR obtained based on the L SINRs to the baseband unit BBU, where the value of L is a positive integer greater than 1 and less than N.
  • the conversion of the time-frequency signal can be: 1) After the RRU converts the RF signal into a baseband signal, it converts the time domain signal into a frequency domain signal and sends it to the EU. 2) The RRU sends the uplink baseband time domain signal to the EU, and the EU converts the baseband time domain signal into a frequency domain signal. That is, in the embodiments of the present disclosure, the conversion of the time-frequency signal can be performed by the RRU or by the EU.
  • the EU first converts the time domain signal of the mounted RRU into a frequency domain signal. After unifying the signal, the EU first selects and merges the RRU signal based on the frequency domain signal, and then sends the merged result to the BBU, which performs the merge again. This improves the signal processing performance of the wireless extended pico base station network to a certain extent, and avoids the problem of large performance loss caused by merging all RRU signals and not distinguishing between time-frequency signals during merging.
  • measuring the signal strength of the EU involved in the above step 304 within the bandwidth range corresponding to the UE on the frequency domain signal includes:
  • Step 11 EU receives configuration data sent by BBU.
  • Step 12 EU measures the signal strength within the bandwidth corresponding to the UE on the frequency domain signal based on the configuration data.
  • the EU may receive the configuration data sent by the BBU, and perform SINR measurement on the frequency domain signals of the multiple RRUs under it according to the frequency domain bandwidth configured by the user, according to the user level. For each user, an RRU selection is performed within the EU, and one or more (for example, 1 to 4) RRUs with the largest SINR are selected.
  • L SINRs with the top SINR values selected from the measurement results are combined to obtain the combined processing result, which may further include:
  • Step 21 the EU compares each SINR in the measurement result with the target value to obtain a comparison result, wherein the target value is the difference between the SINR corresponding to the target MCS scheduled by the UE and the preset threshold value, and the comparison result includes valid RRUs and invalid RRUs, the valid RRUs are RRUs corresponding to the SINR greater than or equal to the target value, and the invalid RRUs are RRUs corresponding to the SINR less than the target value;
  • Step 22 the EU selects L RRUs from the valid RRUs
  • Step 23 the EU determines a ratio of each SINR in the L SINRs to a sum of the L SINRs.
  • Step 24 EU performs a merging process based on the ratio and the L SINRs to obtain a merging process result.
  • the above comparison result can be obtained based on the threshold judgment method of the following RRU/EU signal selection algorithm: E SINR >Dtr SINR -A, if the condition is met, it is selected as a valid RRU, otherwise it is an invalid RRU.
  • E SINR represents the measured SINR value
  • Dtr SINR represents the SINR value corresponding to the target MCS (Modulation and Coding Scheme) of this user scheduling; wherein, MCS defines the number of valid bits that an RE (Resource Element) can carry. That is, MCS defines two parts, modulation scheme (Modulation) and code rate (Code Rate).
  • MCS defines two parts, modulation scheme (Modulation) and code rate (Code Rate).
  • A is a preset threshold value, generally 0 to 12dB, which can be configured according to the maximum number of RRUs to be merged, for example, 4 RRUs can be configured as 6dB.
  • the value of L can be any number from 1 to 4.
  • the ratio of the SINR corresponding to the effective RRU to the sum of the L SINRs is determined by the following formula:
  • i-th SINR among L SINRs is the value of the i-th SINR among L SINRs, i ranges from 1 to k, k is L, max(SINR) represents the maximum SINR among L SINRs, SINR i represents the i-th SINR among L SINRs, SUM(SINR) represents the sum of the selected L SINRs, and A is the preset threshold value;
  • the combined processing result Y is obtained by the following formula in the example:
  • Xi is the i-th SINR among L SINRs.
  • an equivalent SINR may be obtained based on L SINRs by the following formula:
  • MSINR is the equivalent SINR
  • SUM(RSSI) represents the sum of RSSI (Received Signal Strength Indicator) corresponding to L SINRs
  • SUM(NI) represents the sum of NI (Noise Index) corresponding to L SINRs.
  • FIG. 3 above is an explanation of the present disclosure from the EU side.
  • the present disclosure will be explained from the BBU side below.
  • the steps of the method for processing a signal on the BBU side include:
  • the BBU receives the combined processing result sent by the first target EU and the equivalent SINR obtained by the first target EU based on L SINRs, wherein the combined processing result is obtained by combining L SINRs with the top SINR values selected by the first target EU from the measurement result, and the measurement result is obtained by measuring the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal, and the frequency domain signal is converted from the time domain signal sent by N RRUs mounted under the EU; the first target EU is any EU under the BBU; and
  • the BBU combines the combined processing result and the equivalent SINR sent by the second target EU, and decodes the UE based on the combined processing result, wherein the second target EU is the EU corresponding to the M RRUs covering the UE.
  • merging is also performed on the BBU side.
  • merging is performed on both the EU and BBU sides to reduce the uplink signal quality loss caused by the algorithm in the prior art and improve the uplink combining gain.
  • a multi-path frequency domain signal/baseband selection merging algorithm applicable to frequency domain multi-users is provided in the embodiment.
  • the steps of the algorithm include:
  • Step 501 converting the time domain signal of the RRU into a frequency domain signal
  • Step 502 the EU completes the measurement and selection of multiple RRU signals under it;
  • Step 503 the EU performs channel estimation, antenna combining, and equalization on the RRU combined signal.
  • Step 504 the BBU completes demodulation and decoding of the data
  • the time domain signal may be converted into a frequency domain signal in the following manner: after the RRU uplink converts the RF signal into a baseband signal, the time domain signal is converted into a frequency domain signal and sent to the EU; or the RRU sends the uplink baseband time domain signal to the EU, and the EU converts the baseband time domain signal into a frequency domain signal.
  • the EU receives the configuration sent by the BBU, and measures the SINR of the frequency domain signals of the multiple RRUs under it according to the frequency domain bandwidth configured by the user, at the user level. For each user, the RRU selection within the EU is performed, and one or more (for example, 1 to 4) RRUs with the largest SINR are selected, and the multiple RRUs are merged according to the merging algorithm to calculate the equivalent merged SINR value.
  • the EU performs channel estimation, antenna combining, equalization, etc. on each selected RRU data according to the user, and soft-combines the data of multiple RRUs according to the user and sends them to the BBU.
  • the BBU performs EU selection on multiple EU data for each user in turn, and selects one or more (e.g., 1 to 4) data with the largest SINR.
  • the BBU demodulates the selected user-level multiple EU data separately, and then merges and decodes the user-level demodulated data.
  • the BBU has 4 EUs, and each EU has 8 RRUs.
  • UE1 is in the signal coverage of RRU22, and UE2 is in the signal coverage of RRU41.
  • the BBU schedules 2 users in a certain TTI, namely UE1 and UE2; the RB resources allocated to UE1 at this moment are RB0 ⁇ RB49, and the RB resources allocated to UE2 are RB50 ⁇ RB272; the index of the MCS scheduled by UE1 at this moment is 24, and the corresponding SINR value is 30dB; the index of the MCS scheduled by UE2 is 25, and the corresponding SINR value is 34dB.
  • the threshold difference A takes a value of 2dB.
  • the system configuration selects the signal of 1 RRU and the signal of 1 EU.
  • the processing flow of the EU side in the above steps 501 to 503 may be:
  • EU 1 receives the configuration sent by BBU and converts the received time domain signals of RRU 11 to RRU 18 into frequency domain signals.
  • the signal strength within the bandwidth range of RB0 to RB49 on the frequency domain signals of RRU 11 to RRU 18 is measured to determine the signal strength of UE1.
  • the signal strength within the bandwidth range of RB50 to RB272 on the frequency domain signals of RRU 11 to RRU 18 is measured to determine the signal strength of UE2.
  • EU 2 receives the configuration sent by BBU and converts the received time domain signals of RRU 21 ⁇ RRU 28 into frequency domain signals.
  • the signal strength within the bandwidth range of RB0 ⁇ RB49 on the frequency domain signals of RRU 21 ⁇ RRU 28 is measured to determine the signal strength of UE1.
  • the signal strength within the bandwidth range of RB50 ⁇ RB272 on the frequency domain signals of RRU 21 ⁇ RRU 28 is measured to determine the signal strength of UE2.
  • the measured signal strength of UE1 under RRU 22 is the strongest, and the equivalent SINR is 32dB
  • the signal strength of UE2 under RRU 23 is the strongest, and the equivalent SINR is 0.6dB.
  • EU 3 receives the configuration sent by BBU and converts the received time domain signals of RRU 31 to RRU 38 into frequency domain signals.
  • the signal strength within the bandwidth range of RB0 to RB49 on the frequency domain signals of RRU 31 to RRU 38 is measured to determine the signal strength of UE1.
  • the signal strength within the bandwidth range of RB50 to RB272 on the frequency domain signals of RRU 31 to RRU 38 is measured to determine the signal strength of UE2.
  • the measured signal strength of UE1 under RRU 31 is the strongest, with an equivalent SINR of 0.5dB
  • the signal strength of UE2 under RRU 33 is the strongest, with an equivalent SINR of 0.6dB.
  • EU 4 receives the configuration sent by BBU, and converts the received time domain signals of RRU 41 ⁇ RRU 48 into frequency domain signals.
  • the signal strength within the bandwidth range of RB0 ⁇ RB49 on the frequency domain signals of RRU 41 ⁇ RRU 48 is measured to determine the signal strength of UE1.
  • the signal strength within the bandwidth range of RB50 ⁇ RB272 on the frequency domain signals of RRU 41 ⁇ RRU 48 is measured to determine the signal strength of UE2. Assume that the measured signal strength of UE1 under RRU 41 is the strongest, and the equivalent SINR is 0.5dB, and the signal strength of UE2 under RRU 41 is the strongest, and the equivalent SINR is 36dB.
  • Example 1 the processing flow on the BBU side in step 504 is:
  • the BBU receives data from EU 1 to EU 4 , and selects the data of RRU 22 under EU 2 for UE1 to demodulate and decode; and selects the data of RRU 41 under EU 4 for UE2 to demodulate and decode.
  • Example 1 UE1 and UE2 in the above Example 1 are respectively under the coverage of only one RRU.
  • Example 2 will use Example 2 to illustrate how to implement the signal merging method of the wireless indoor distributed system when UE1 and UE2 are under the coverage of multiple RRUs.
  • the network is shown in Figure 8. In the NR system, the bandwidth is 100MHz.
  • BBU is connected to EU1
  • EU1 is connected to 8 RRUs (RRU11 to RRU18) and EU2.
  • EU2 is connected to 8 RRUs (RRU21 to RRU28).
  • UE1 is mainly in the signal coverage of RRU18
  • UE2 is mainly in the signal coverage of RRU22. In other words, UE1 and UE2 are also in the coverage of other RRUs.
  • the BBU schedules two users in a certain TTI, namely UE1 and UE2; the RB resources allocated to UE1 at this moment are RB0 ⁇ RB49, and the RB resources allocated to UE2 are RB50 ⁇ RB272; the index of the MCS scheduled by UE1 at this moment is 24, and the corresponding SINR value is 30dB; the index of the MCS scheduled by UE2 is 25, and the corresponding SINR value is 32dB.
  • the threshold difference A is 10dB.
  • the system configuration selects the signals of 4 RRUs and 2 EUs.
  • the processing flow of the EU side in the above steps 501 to 503 may be:
  • EU1 then calculates the ⁇ i of UE1 and UE2 corresponding to each RRU under it as shown in Table 2 below.
  • EU1 selects four RRUs for UE1, namely RRU 15 , RRU 16 , RRU 17 , and RRU 18 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE1; then the soft bit information of the four RRUs after equalization is merged:
  • the equivalent SINR of UE1 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE1 is 30 dB.
  • EU1 selects four RRUs for UE2, namely RRU 15 , RRU 16 , RRU 17 , and RRU 18 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE2; then the soft bit information of the four RRUs after equalization is merged.
  • the equivalent SINR of UE2 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE2 is 11.7 dB.
  • EU1 reports the combined data of UE1 and UE2 together with the equivalent SINR to the BBU.
  • EU2 then calculates the ⁇ i of UE1 and UE2 corresponding to each RRU under it as shown in Table 4 below.
  • EU2 selects four RRUs for UE1, namely RRU 21 , RRU 22 , RRU 23 , and RRU 28 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE1; then the soft bit information of the four RRUs after equalization is merged:
  • the equivalent SINR of UE1 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE1 is 12.3 dB.
  • EU2 selects four RRUs for UE2, namely RRU 21 , RRU 22 , RRU 23 , and RRU 24 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE2; then the soft bit information of the four RRUs after equalization is merged.
  • the equivalent SINR of UE2 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE2 is 32 dB.
  • EU2 reports the combined data of UE1 and UE2 together with the equivalent SINR to the BBU.
  • EU3 then calculates the ⁇ i of UE1 and UE2 corresponding to each RRU under it as shown in Table 6 below.
  • EU3 selects four RRUs for UE1, namely RRU 31 , RRU 32 , RRU 33 , and RRU 34 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE1; then the soft bit information of the four RRUs after equalization is merged:
  • the equivalent SINR of UE1 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE1 is 7.7 dB.
  • EU3 selects four RRUs for UE2, namely RRU 31 , RRU 32 , RRU 33 , and RRU 34 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE2; then the soft bit information of the four RRUs after equalization is merged.
  • the equivalent SINR of UE2 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE2 is 13.5 dB.
  • EU3 reports the combined data of UE1 and UE2 together with the equivalent SINR to the BBU.
  • EU4 then calculates the ⁇ i of UE1 and UE2 corresponding to each RRU under it as shown in Table 8 below.
  • EU4 selects four RRUs for UE1, namely RRU 41 , RRU 42 , RRU 43 , and RRU 44 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE1; then the soft bit information of the four RRUs after equalization is merged:
  • the equivalent SINR of UE1 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE1 is 3.9 dB.
  • EU4 selects four RRUs for UE2, namely RRU 41 , RRU 42 , RRU 43 , and RRU 44 , and uses the frequency domain signals of these four RRUs to perform channel estimation, multi-antenna merging, and equalization on UE2; then the soft bit information of the four RRUs after equalization is merged.
  • the equivalent SINR of UE2 is calculated for the selected four RRUs. It is assumed that the calculated equivalent SINR of UE2 is 8.8 dB.
  • EU4 reports the combined data of UE1 and UE2 together with the equivalent SINR to the BBU.
  • Example 2 the processing flow on the BBU side in step 504 is:
  • the BBU selects the data of EU1 and EU2 for UE1 (the physical location of UE1 is mainly within the signal coverage of RRU 18 under EU 1 , and the signal coverage of RRU under EU 2 also covers the physical location of UE1), and merges the data of EU1 and EU2:
  • the combined data Y1 is used to perform final decoding on UE1.
  • the BBU selects the data of EU2 and EU3 for UE2 (the physical location of UE2 is mainly within the signal coverage of RRU 22 under EU 2 , and the signal coverage of RRU under EU 3 also covers the physical location of UE2), and merges the data of EU2 and EU3:
  • the combined data Y2 is used to perform final decoding on UE2.
  • the embodiments of the present disclosure can be applied to multiple application scenarios, such as single-user scenarios and multi-user scenarios in the frequency domain, different BBU/EU segmentation scenarios, different EU/RRU segmentation scenarios, etc.
  • the measurement and selection of the frequency domain signals of the multiple RRUs hanging down are completed, the EU completes channel estimation, antenna merging, equalization, and calculation of equivalent SINR for the merged data of the RRU, and reports it to the BBU, and the BBU completes the selection, demodulation, merging and decoding of the EU reported data.
  • the terminal uplink signal can be received by up to 4 pRRUs, the performance improvement of EU merging + BBU merging can reach 3 to 6dB.
  • the embodiment of the present disclosure further provides a signal processing device 100, which is applied to the EU side.
  • the device 100 includes:
  • the acquisition module 102 is configured to acquire a frequency domain signal converted from a time domain signal sent by N remote radio units RRUs, wherein the N RRUs are mounted under the EU, and the terminal UE is within the coverage of M RRUs among the N RRUs; M is a positive integer greater than 1, and M is less than or equal to N;
  • the measurement module 104 is configured to measure the signal strength within the bandwidth corresponding to the UE on the frequency domain signal to obtain a measurement result, wherein the measurement result includes a signal to interference plus noise ratio SINR under each RRU;
  • the first processing module 106 is configured to combine L SINRs with the top SINR values selected from the measurement results, and send the combined processing result and the equivalent SINR obtained based on the L SINRs to the BBU, where the value of L is a positive integer greater than 1 and less than N.
  • the measurement module 104 in the disclosed embodiment may further include: a receiving unit configured to receive configuration data sent by a baseband unit BBU; and a measuring unit configured to measure the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal based on the configuration data.
  • the EU first converts the time domain signal of the mounted RRU into a frequency domain signal. After unifying the signals, the EU first selects and merges the RRU signals based on the frequency domain signals, and then sends the merging results to the BBU, which performs merging again. This improves the signal processing performance of the wireless extended pico base station network to a certain extent, and avoids the problem in the prior art that the signals of all RRUs are merged and the time-frequency signals are not distinguished when merging, resulting in a large performance loss.
  • the first processing module 106 in the disclosed embodiment may further include: a comparison unit, configured to compare each SINR in the measurement result with a target value to obtain a comparison result, wherein the target value is the difference between the SINR corresponding to the target MCS scheduled by the UE and a preset threshold value, and the comparison result includes a valid RRU and an invalid RRU, the valid RRU is an RRU corresponding to an SINR greater than or equal to the target value, and the invalid RRU is an RRU corresponding to an SINR less than the target value; a selection unit, configured to select L RRUs from the valid RRUs; a determination unit, configured to determine the ratio of each SINR in the L SINRs to the sum of the L SINRs; a processing unit, configured to perform merging processing based on the ratio and the L SINRs to obtain a merging processing result.
  • a comparison unit configured to compare each SINR in the measurement result with a target value to obtain a comparison result, wherein the target value is the difference between the SINR
  • the ratio of each of the L SINRs to the sum of the L SINRs is determined by the following formula:
  • i-th SINR among L SINRs is the value of the i-th SINR among L SINRs, i ranges from 1 to k, k is L, max(SINR) represents the maximum SINR among L SINRs, SINR i represents the i-th SINR among L SINRs, SUM(SINR) represents the sum of the selected L SINRs, and A is the preset threshold value;
  • the combined processing result Y is obtained by the following formula:
  • Xi is the i-th SINR among L SINRs.
  • the equivalent SINR is obtained based on the L SINRs by the following formula:
  • MSINR is the equivalent SINR
  • SUM(RSSI) represents the sum of the received signal strength indicators RSSI corresponding to L SINRs
  • SUM(NI) represents the sum of the noise indexes NI corresponding to L SINRs.
  • the embodiment of the present disclosure further provides a signal processing device 110, which is applied to the BBU side.
  • the device 110 includes:
  • the receiving module 112 is configured to receive the combined processing result sent by the first target EU and the equivalent SINR obtained by the first target EU based on L SINRs, wherein the combined processing result is obtained by combining the L SINRs with the top SINR values selected by the first target EU from the measurement result, and the measurement result is obtained by measuring the signal strength within the bandwidth range corresponding to the UE on the frequency domain signal, and the frequency domain signal is obtained by converting the time domain signal sent by N RRUs mounted under the EU; the first target EU is any EU under the BBU;
  • the second processing module 11 is configured to combine the combined processing result and the equivalent SINR sent by the second target EU, and decode the UE based on the combined processing result, wherein the second target EU is the EU corresponding to the M RRUs covering the UE.
  • merging is also performed on the BBU side.
  • merging is performed on both the EU and BBU sides to reduce the uplink signal quality loss caused by the algorithm in the prior art and improve the uplink combining gain.
  • the embodiment of the present disclosure provides an electronic device 120, which includes a processor 121, a communication interface 122, a memory 123, and a communication bus 124, wherein the processor 121, the communication interface 122, and the memory 123 communicate with each other through the communication bus 124.
  • Memory 123 configured to store computer programs
  • the processor 121 when configured to execute a program stored in the memory 123, implements the signal processing method provided by the present disclosure, and its role is similar and will not be described in detail here.
  • the embodiments of the present disclosure further provide a computer-readable storage medium having a computer program stored thereon.
  • the computer program is executed by a processor, the steps of the signal processing method provided in any one of the aforementioned method embodiments are implemented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de traitement de signal, ainsi qu'un support de stockage. Le procédé comprend les étapes suivantes : une unité étendue (EU) acquiert des signaux du domaine fréquentiel, qui sont obtenus par conversion de signaux du domaine temporel qui sont envoyés par N unités radio distantes (RRU), les N RRU étant montées sous l'EU, et un UE terminal se trouvant dans la plage de couverture de M RRU parmi les N RRU, M étant un entier positif supérieur à un, et M étant inférieur ou égal à N ; l'EU mesure une intensité de signal dans une plage de largeur de bande, qui correspond à l'UE et est sur les signaux du domaine fréquentiel, de façon à obtenir un résultat de mesure, le résultat de mesure comprenant un rapport signal sur brouillage plus bruit (SINR) sous chaque RRU ; et l'EU effectue un traitement de combinaison sur L SINR ayant les plus hautes valeurs de SINR, lesquels SINR sont sélectionnés dans le résultat de mesure, et envoie à une BBU un résultat de traitement de combinaison et un SINR équivalent, qui est obtenu sur la base des L SINR.
PCT/CN2022/134268 2022-11-25 2022-11-25 Procédé et appareil de traitement de signal, et support de stockage WO2024108533A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/134268 WO2024108533A1 (fr) 2022-11-25 2022-11-25 Procédé et appareil de traitement de signal, et support de stockage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/134268 WO2024108533A1 (fr) 2022-11-25 2022-11-25 Procédé et appareil de traitement de signal, et support de stockage

Publications (1)

Publication Number Publication Date
WO2024108533A1 true WO2024108533A1 (fr) 2024-05-30

Family

ID=91195044

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/134268 WO2024108533A1 (fr) 2022-11-25 2022-11-25 Procédé et appareil de traitement de signal, et support de stockage

Country Status (1)

Country Link
WO (1) WO2024108533A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102916754A (zh) * 2012-10-15 2013-02-06 华为技术有限公司 一种参考信号接收功率的测量方法及装置
CN103546260A (zh) * 2012-07-10 2014-01-29 华为技术有限公司 一种多射频拉远单元共小区协作多点传输的方法及装置
CN105407506A (zh) * 2014-09-16 2016-03-16 成都鼎桥通信技术有限公司 一种rru的上行数据接收处理方法和装置
WO2017000699A1 (fr) * 2015-06-29 2017-01-05 华为技术有限公司 Procédé et dispositif de traitement de données pour une pluralité de rru partageant une cellule
CN111010723A (zh) * 2019-12-17 2020-04-14 四川天邑康和通信股份有限公司 一种用于基站的rru数据合并的方法、系统及处理装置
CN113709813A (zh) * 2021-09-03 2021-11-26 上海中兴易联通讯股份有限公司 一种用于nr小基站基带合并的方法和系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103546260A (zh) * 2012-07-10 2014-01-29 华为技术有限公司 一种多射频拉远单元共小区协作多点传输的方法及装置
CN102916754A (zh) * 2012-10-15 2013-02-06 华为技术有限公司 一种参考信号接收功率的测量方法及装置
CN105407506A (zh) * 2014-09-16 2016-03-16 成都鼎桥通信技术有限公司 一种rru的上行数据接收处理方法和装置
WO2017000699A1 (fr) * 2015-06-29 2017-01-05 华为技术有限公司 Procédé et dispositif de traitement de données pour une pluralité de rru partageant une cellule
CN111010723A (zh) * 2019-12-17 2020-04-14 四川天邑康和通信股份有限公司 一种用于基站的rru数据合并的方法、系统及处理装置
CN113709813A (zh) * 2021-09-03 2021-11-26 上海中兴易联通讯股份有限公司 一种用于nr小基站基带合并的方法和系统

Similar Documents

Publication Publication Date Title
Endo et al. Uplink non-orthogonal access with MMSE-SIC in the presence of inter-cell interference
Saito et al. System-level performance evaluation of downlink non-orthogonal multiple access (NOMA)
US9832780B2 (en) Method for estimating uplink control channel quality
KR101089527B1 (ko) 역방향 링크 송신 빔형성을 위한 방법 및 장치
US20150270877A1 (en) Selection of access points for coordinated multipoint uplink reception
WO2009155740A1 (fr) Procédé de répartition par secteur pour le service d'accès par paquets en liaison montante haut débit
US10194403B2 (en) Apparatus and methods for signal reception based on network load estimations
WO2011006434A1 (fr) Système et procédé de réglage d'un indice de qualité de canal de liaison descendante dans un système de communications sans fil
CN104579441B (zh) 一种室内das系统与小基站下行干扰避免方法
KR20130084442A (ko) 통신 시스템에서 서비스 거부 공격을 감지하기 위한 기지국 및 그 방법
US9008245B1 (en) Optimal symbol detection in the presence of non-gaussian interference
CN110662235B (zh) 数据处理方法、主机单元、基站系统和存储介质
CN116016056A (zh) 信号的处理方法、装置及存储介质
WO2009118635A2 (fr) Signal de référence spécialisé, amplifié
WO2024108533A1 (fr) Procédé et appareil de traitement de signal, et support de stockage
US8805295B2 (en) System and method utilizing transmit diversity
WO2012019450A1 (fr) Procédé d'appairage d'utilisateurs pour système multiutilisateur à entrées multiples et à sorties multiples, procédé de transmission de données et dispositifs correspondants
CN101252380B (zh) 一种基于双天线不平衡的高速上行链路分组接入调度方法
WO2011010698A1 (fr) Station de base sans fil et procédé de commande de communication
CN105897318B (zh) 基于zf接收机的多用户大规模mimo系统的自适应调制方法
WO2012010027A1 (fr) Procédé et système de planification des utilisateurs à base de système mimo
AU2014201666B2 (en) Apparatus and methods for signal reception based on network load estimations
CN112383954B (zh) 一种同时同频全双工系统功率控制方法及装置
WO2023016522A1 (fr) Procédé de communication et appareil de communication
JP2013247500A (ja) 無線通信装置及び電力制御方法