CN113965975A - Signal processing method, signal processing device, communication equipment and readable storage medium - Google Patents

Signal processing method, signal processing device, communication equipment and readable storage medium Download PDF

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Publication number
CN113965975A
CN113965975A CN202111575275.4A CN202111575275A CN113965975A CN 113965975 A CN113965975 A CN 113965975A CN 202111575275 A CN202111575275 A CN 202111575275A CN 113965975 A CN113965975 A CN 113965975A
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ssb
frequency
network side
ssbs
terminal
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CN202111575275.4A
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CN113965975B (en
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周娇
李新
苏翰
丁海煜
黄宇红
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a signal processing method, a signal processing device, communication equipment and a readable storage medium, and relates to the technical field of communication. In the embodiment of the present invention, the method is applied to a network side device, and includes: sending a synchronous signal block SSB to a terminal in a frequency division multiplexing mode; in another embodiment of the present invention, the method is applied to a terminal, and includes: receiving an SSB sent by network side equipment in a frequency division multiplexing mode; and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB. The method and the device can improve the success rate of terminal access.

Description

Signal processing method, signal processing device, communication equipment and readable storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal processing method and apparatus, a communication device, and a readable storage medium.
Background
In consideration of the fact that a New Radio (NR) network transmits Synchronous Signal Blocks (SSBs) in different directions at the same frequency and at different times, the existing New NR network is beneficial to reducing the search area of a terminal, and transmits SSBs in a time division multiplexing manner. However, if the frequency domain of the SSB configuration is affected by strong interference, the terminal may not access the system, resulting in a low success rate of terminal access.
The related prior art of this application includes: CN111464954B, CN 113260005A.
Disclosure of Invention
Embodiments of the present application provide a signal processing method, an apparatus, a communication device, and a readable storage medium, so as to solve the problem that a success rate of terminal access is low due to the SSB being sent in a time division multiplexing manner.
To solve the above problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a signal processing method, which is executed by a network side device, and the method includes:
and sending the synchronous signal block SSB to the terminal in a frequency division multiplexing mode.
In a second aspect, an embodiment of the present application provides a signal processing method, which is performed by a terminal, and the method includes:
receiving an SSB sent by network side equipment in a frequency division multiplexing mode;
and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB.
In a third aspect, an embodiment of the present application further provides a signal processing apparatus, including:
and the first transceiver is used for sending the synchronization signal block SSB to the terminal in a frequency division multiplexing mode.
In a fourth aspect, an embodiment of the present application further provides a signal processing apparatus, including:
a second transceiver to:
receiving an SSB sent by network side equipment in a frequency division multiplexing mode;
and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB.
In a fifth aspect, an embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor, configured to read a program in the memory to implement the steps of the method according to the first aspect; or, a step in a method as described in the second aspect above.
In a sixth aspect, embodiments of the present application further provide a readable storage medium for storing a program, where the program, when executed by a processor, implements the steps in the method according to the foregoing first aspect, or implements the steps in the method according to the foregoing second aspect.
In the embodiment of the application, the network side equipment sends the SSB in a frequency division multiplexing mode, so that the configured frequency points of the SSB can be enriched, and even if the SSB of a certain frequency point is interfered, the terminal can access the network side equipment through the frequency points corresponding to other SSBs, so that the success rate of terminal access can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a network system to which an embodiment of the present application is applicable;
fig. 2 is a schematic flowchart of a signal processing method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of the frequency domain relationship between SSB and CORESET0 provided by an embodiment of the present application;
FIG. 4 is a second illustration of the frequency domain relationship between SSB and CORESET0 provided by the embodiments of the present application;
fig. 5 is a second schematic flowchart of a signal processing method according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a signal processing apparatus according to an embodiment of the present disclosure;
fig. 7 is a second schematic structural diagram of a signal processing apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a communication device provided in this application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
The terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Further, as used herein, "and/or" means at least one of the connected objects, e.g., a and/or B and/or C, means 7 cases including a alone, B alone, C alone, and both a and B present, B and C present, both a and C present, and A, B and C present.
Referring to fig. 1, fig. 1 is a structural diagram of a network system to which the embodiment of the present application is applicable, and as shown in fig. 1, includes a terminal 11 and a network side device 12. Communication is possible between the terminal 11 and the network-side device 12.
The terminal 11 may also be called a User Equipment (UE), and in practical applications, the terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device. The network side device 12 may be a base station, an access point, or other network elements.
The following describes a signal processing method provided in an embodiment of the present application.
Referring to fig. 2, fig. 2 is a schematic flow chart of a signal processing method provided in an embodiment of the present application. The signal processing method shown in fig. 2 may be applied to a network-side device.
As shown in fig. 2, the signal processing method may include the steps of:
step 201, sending a synchronization signal block SSB to the terminal in a frequency division multiplexing manner.
In the embodiment of the present application, the network side device may send SSBs on different frequency domains. In implementation, the network side device may send the SSBs in the same time domain and different frequency domains, or may send the SSBs in different time domains and different frequency domains, which may be specifically determined according to actual requirements, and this is not limited in this embodiment of the present application.
In the signal processing method of the embodiment, the network side device sends the SSBs in a frequency division multiplexing manner, so that configured frequency points of the SSBs can be enriched, and even if the SSBs of a certain frequency point are interfered, the terminal can access the network side device through frequency points corresponding to other SSBs, thereby improving the success rate of terminal access.
In this embodiment of the present application, in an implementation manner, a network side device may always send an SSB in a frequency division multiplexing manner. In another implementation manner, optionally, the sending the synchronization signal block SSB to the terminal in a frequency division multiplexing manner includes:
under the condition of meeting a first condition, transmitting the SSB in a frequency division multiplexing mode;
wherein the first condition comprises at least one of:
the working frequency band of the network side equipment is less than the preset value,
the working frequency band of the network side equipment is interfered.
When the first condition includes that the working frequency band of the network side device is smaller than a preset value, it may be preconfigured that the low frequency band SSB may be transmitted in a frequency division multiplexing manner, and the high frequency band SSB may be transmitted in a time division multiplexing manner.
If the working frequency band of the network side equipment is smaller than a preset value, the network side equipment is indicated to work in a low frequency band; and if the working frequency band of the network side equipment is greater than or equal to a preset value, the network side equipment is indicated to work in a high frequency band. The preset value may be 1 gigahertz (GHz) or 2GHz, and may be specifically determined according to actual requirements, which is not limited in the embodiment of the present application.
Therefore, if the working frequency band of the network side equipment is smaller than the preset value, the network side equipment can send the SSB in a frequency division multiplexing mode, otherwise, the SSB can be sent in a time division multiplexing mode.
When the first condition includes that the working frequency band of the network side device is interfered, the frequency band SSB which is configured to be interfered in advance may be transmitted in a frequency division multiplexing manner, and the frequency band SSB which is not interfered may be transmitted in a time division multiplexing manner. Thus, if the working frequency band of the network side device is interfered, the network side device may send the SSB in a frequency division multiplexing manner, otherwise, the SSB may be sent in a time division multiplexing manner.
Through the implementation mode, the network side equipment can send the SSB in a frequency division multiplexing mode under the condition of meeting the first condition, otherwise, the network side equipment can send the SSB in a time division multiplexing mode, and therefore the flexibility of SSB sending can be improved on the premise of ensuring the access success rate of the terminal.
In the embodiment of the present application, the frequency domain location of the frequency-division SSB (i.e., the SSB transmitted in the frequency-division multiplexing manner) may be configured on the basis of a grid (e.g., a synchronization grid and/or a channel grid).
Alternatively, the frequency domain locations of the SSBs may be uniformly configured or non-uniformly configured. That is, SSBs sent in different frequency domains may be subjected to uniform frequency division or non-uniform frequency division, thereby improving the flexibility of SSB sending.
In implementation, the frequency domain positions of the SSBs can be uniformly configured when the interference is uniform; under the condition that interference is uncertain, the frequency domain position of the SSB can be configured non-uniformly, so that the success rate of the terminal for receiving the SSB can be improved, and the success rate of terminal access can be improved.
The determination of the frequency domain position of the frequency division SSB in each case is explained below.
Firstly, the frequency domain positions of the SSBs are uniformly configured.
Optionally, the frequency domain location of the SSB is determined based on first information, and the first information is any one of: frequency-hop interval (frequency-hop) between two adjacent frequency domain positions of the SSB, the number of transmission K of the SSB, K being an integer greater than 1.
The following is described for different cases:
case one, the frequency domain location of the SSB is determined based on the frequency-hop between two adjacent frequency domain locations of the SSB.
In this case, the (i + 1) th and the (i) th frequency domain positions may be regarded as two adjacent frequency domain positions, i being a positive integer.
For convenience of description, let RB be the frequency-hop between two adjacent frequency domain positions of SSBfrequency-hopThe starting frequency domain position of SSB is RBstartThen:
n +1 frequency domain position of frequency division SSB = RBstart+N×RBfrequency-hop
Wherein RBstart >Minimum bandwidth part (LowBWP), RBstart+N*RBfrequency-hop <The maximum BandWidth Part (MaxBWP), i.e. the frequency domain position of the frequency-divided SSB, must be within the BandWidth Part (BWP) range, and if the BWP range is exceeded, the terminal does not search for the SSB.
And in case two, the frequency domain position of the SSB is determined based on the sending number K of the SSB.
In this case, a frequency-hop between two adjacent frequency domain positions where the frequency-division SSB is acquired may be calculated according to the number of transmitted frequency-division SSBs and BWP, as follows: 30MHz Bandwidth configuration KSSBFor 3, freq can be calculatedThe ue-hop is 10MHz, the network side device can send one SSB per 10MHz bandwidth, and the terminal can search the next SSB frequency point at the interval of the first SSB by 10MHz bandwidth.
In implementation, the first information may be configured by a network side device, or may be agreed by a protocol, which may be specifically determined according to an actual situation, and this is not limited in this embodiment of the present application.
In a case that the first information is configured by the network side device, optionally, before the sending the synchronization signal block SSB to the terminal in a frequency division multiplexing manner, the method further includes:
and sending first indication information to the terminal, wherein the first indication information is used for indicating the first information.
In implementation, the first indication Information may be carried by a Master Information Block (MIB), so as to reduce signaling overhead, and of course, the first indication Information may also be indicated by other manners, which may be specifically determined according to actual requirements, which is not limited in this embodiment.
After determining the first information, the network side device may indicate the first information to the terminal. Such as: frequency-hop or K may be carried in the first indication information. Therefore, the network side equipment and the terminal can be ensured to have consistent understanding on the time domain positions of the frequency division SSB, and the reliability of terminal access can be improved.
And secondly, the frequency domain positions of the SSBs are configured non-uniformly.
Optionally, the frequency domain location of the SSB is determined based on second information, and the second information is any one of: a frequency hopping indication diagram and a frequency hopping interval formula.
The following is described for different cases:
and in case three, the frequency domain position of the SSB is determined based on the frequency hopping indication map.
In this case, the frequency hopping indication map may indicate the time domain location of each frequency division SSB. In implementation, the hopping indication map can be represented as a bitmap (bitmap), where each bit in the bitmap corresponds to a time domain position. Optionally, if a value of a bit is 1, it indicates that a time domain position corresponding to the bit is a time domain position of frequency division SSB; and if the value of a certain bit is 0, the time domain position corresponding to the bit is not the time domain position of the frequency division SSB.
Optionally, the frequency hopping indication map may be a sparse frequency hopping indication map, that is, the frequency hopping interval is from dense to sparse, so that the overhead of the SSB may be reduced, and meanwhile, the reliability of terminal access may also be improved under the condition of non-uniform interference.
And in case four, the frequency domain position of the SSB is determined based on a frequency hopping interval formula.
In this case, optionally, in the frequency hopping interval formula, an interval between the index of the i +1 th time domain position and the index of the ith time domain position is any one of the following values: mi+1M is a positive integer, or the product of the index of the ith time domain position and the preset frequency hopping interval, i is a positive integer.
That is, in one implementation, the (i + 1) th frequency domain position = the (i) th frequency domain position + Mi+1。
In this manner, M may be configured by a network side device or agreed by a protocol, and if M may be equal to 2, it may be determined specifically according to actual requirements, which is not limited in this embodiment of the present application.
In another implementation, the (i + 1) th frequency domain position = the index of the (i) th frequency domain position + the (i) th frequency domain position × the preset hopping interval.
In this manner, the preset frequency hopping interval may be configured by the network side device or agreed by a protocol, and may be specifically determined according to actual requirements, which is not limited in this embodiment of the present application.
In the fourth case, frequency-hop between two adjacent frequency domain positions of the frequency-division SSB is from dense to sparse, so that the overhead of the SSB can be reduced, and the reliability of terminal access can be improved under the condition of non-uniform interference.
In implementation, the second information may be configured by a network side device, or may be agreed by a protocol, which may be specifically determined according to an actual situation, and this is not limited in this embodiment of the present application.
In a case that the second information is configured by the network side device, optionally, before the sending the synchronization signal block SSB to the terminal in a frequency division multiplexing manner, the method further includes:
and sending second indication information to the terminal, wherein the second indication information is used for indicating the second information.
In implementation, the second indication information may be carried by an MIB, so as to reduce signaling overhead, and of course, the second indication information may also be indicated by other manners, which may be specifically determined according to actual needs, and this is not limited in this embodiment of the present application.
After determining the second information, the network side device may indicate the second information to the terminal. Such as: the sequence number of the hopping frequency indication map or the hopping interval formula may be indicated by the second indication information. Therefore, the network side equipment and the terminal can be ensured to have consistent understanding on the time domain positions of the frequency division SSB, and the reliability of terminal access can be improved.
In this embodiment of the present application, optionally, third indication information may be carried in the first SSB of the SSBs, where the third indication information is used to indicate that the terminal accesses the network side device at the frequency point corresponding to the received first SSB.
In a specific implementation, the first SSB may include a partial or full frequency-division SSB. If the first frequency division SSB received by the terminal carries the third indication information, the terminal may stop searching for other frequency division SSBs after receiving the first SSB, so as to save power consumption of the terminal.
In this embodiment, the terminal may access the network side device through the received frequency point corresponding to the first SSB. Therefore, the network side equipment can conveniently acquire the bandwidth capability supported by the terminal, and the reliability of the subsequent service of the terminal is further improved.
For example, it is assumed that the network side device supports 758 to 803 downlink bandwidths, and the terminal is supported by two capabilities, one of which supports 758 to 788 30MHz bandwidth type a (typea), and the other of which supports 773 to 803 30MHz bandwidth type b (typeb). The network side device sends the SSB simultaneously at 760 or 775.
The TypeA terminal accesses after SSB searched by 760, and the TypeB accesses after SSB is searched by 775. Therefore, the network side device can determine that the access terminal is type a or type b by the random access time (RACH occupancy, RO) position of the terminal access, and then schedule a suitable bandwidth for the terminal to perform subsequent services.
It should be noted that, in other embodiments, the terminal may access the network side device through a frequency point corresponding to another frequency division SSB, for example, the frequency division SSB with the best signal quality may be determined specifically according to an actual situation, and this is not limited in this embodiment.
Optionally, the frequency domain relationship between the SSB and the Control Resource Set0 (CORESET 0) satisfies: a one-to-one correspondence, or a many-to-one correspondence.
For ease of understanding, please refer to fig. 3 and 4. In fig. 3, the frequency division SSB corresponds to the CORESET0 one by one in the frequency domain, specifically, SSB1, SSB2, and SSB3 transmitted in different frequency domains correspond to one CORESET0, respectively.
In fig. 4, multiple frequency-division SSBs correspond to one CORESET0, and specifically, SSB1, SSB2, and SSB3 transmitted on different frequency domains correspond to the same CORESET 0.
By the method, the frequency domain corresponding relation between the SSB and the CORESET0 is enhanced.
Optionally, when the frequency domain relationship satisfies a many-to-one correspondence relationship, a System Information Block 1 (SIB 1) of the network side device carries fourth indication Information, where the fourth indication Information is used to indicate a correspondence relationship between P SSBs and a Physical Resource Block (Physical Resource Block) of a target CORESET0, the P SSBs correspond to the target CORESET0, and P is an integer greater than 1.
In this alternative embodiment, for multiple SSBs corresponding to the same CORESET0, the correspondence between the multiple SSBs and the PRBs in the CORESET0 may be further indicated in SIB1, so that the reliability of terminal access may be further improved.
In the embodiment of the present application, it is considered that the same network side device may send SSBs on multiple frequency points, and therefore the multiple frequency points belong to the same network side device. In the related art, a network side device corresponds to a frequency point, in order to avoid that a terminal mistakenly regards different frequency points of the same network side device as different frequencies, optionally, fifth indication information is carried in a system information block 2 of the network side device, the fifth indication information is used for indicating that Q frequency points belong to the same frequency, the Q frequency points correspond to Q SSBs sent by the network side device in a frequency division multiplexing manner one by one, and Q is an integer greater than 1.
In a specific implementation, the fifth indication information may be carried in intra freqcellreselection info (intrafreq reselection info) in the SIB 2. The fifth indication information may be expressed as introFreqcode, such as SSBintroFreqcode, but is not limited thereto.
By the method, the terminal can know all the frequency points corresponding to the same network side equipment, and the frequency points are regarded as the same frequency, so that the reliability of cell switching or cell reselection can be improved.
Referring to fig. 5, fig. 5 is a second flowchart of a signal processing method according to an embodiment of the present application. The signal processing method of the embodiment of the application can be applied to the terminal.
As shown in fig. 5, the signal processing method may include the steps of:
step 501, receiving the SSB sent by the network side device in a frequency division multiplexing manner.
Step 502, accessing the network side device at a frequency point corresponding to a second SSB, where the second SSB is determined based on the received SSB.
In the signal processing method of the embodiment, the terminal may send the SSBs in a frequency division multiplexing manner, so that configured frequency points of the SSBs may be enriched, and even if the SSBs of a certain frequency point are interfered, the terminal may access the network side device through the frequency points corresponding to other SSBs, thereby improving the success rate of terminal access.
Optionally, the second SSB may be any one of:
the first SSB that is received is,
the SSB having the best signal quality among the received SSBs,
and performing diversity demodulation on the received SSB to obtain the SSB.
And under the condition that the second SSB is the received first frequency division SSB, after the terminal receives the first SSB, the terminal can access the network side equipment through the frequency point corresponding to the SSB and stop searching other frequency division SSBs, so that the terminal overhead can be reduced.
And when the second SSB is the SSB with the best signal quality in the received SSBs, the terminal may first search the frequency division SSBs in the full width band, then determine the SSB with the best signal quality in the received SSBs, and then access the network side device through the frequency point corresponding to the SSB, thereby improving the success rate of terminal access. In practice, the Signal Quality of the SSB may be characterized by Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ).
And under the condition that the second SSB is the SSB obtained after diversity demodulation is performed on the received SSB, the terminal can access the network side equipment through the frequency point corresponding to the SSB obtained by combination after the received SSB is combined, so that the success rate of terminal access can be improved.
Optionally, before the frequency point corresponding to the second SSB accesses the network side device, the method further includes:
determining the received first SSB as the second SSB under the condition that the received first SSB carries third indication information;
and the third indication information is used for indicating the terminal to access the network side equipment at the frequency point corresponding to the received first SSB.
Optionally, the frequency domain locations of the SSBs are uniformly configured or non-uniformly configured.
Optionally, in a case that the frequency domain locations of the SSBs are uniformly configured, the frequency domain locations of the SSBs are determined based on first information, where the first information is any one of: the frequency hopping interval between two adjacent frequency domain positions of the SSB, and the sending number of the SSB.
Optionally, before receiving the SSB sent by the network side device in the frequency division multiplexing manner, the method further includes:
and receiving first indication information sent by the network side equipment, wherein the first indication information is used for indicating the first information.
Optionally, in a case that the frequency domain location of the SSB is non-uniformly configured, the frequency domain location of the SSB is determined based on second information, and the second information is any one of: a frequency hopping indication diagram and a frequency hopping interval formula.
Optionally, before receiving the SSB sent by the network side device in the frequency division multiplexing manner, the method further includes:
and receiving second indication information sent by the network side equipment, wherein the second indication information is used for indicating the second information.
Optionally, in the frequency hopping interval formula, an interval between the index of the (i + 1) th time domain position and the index of the ith time domain position is any one of the following values: mi+1Or, the product of the index of the ith time domain position and the preset frequency hopping interval, i is a positive integer, and M is a positive integer.
Optionally, the frequency domain relationship between the SSB and the control resource set CORESET0 satisfies: a one-to-one correspondence, or a many-to-one correspondence.
Optionally, in a case that the frequency domain relationship satisfies a many-to-one correspondence relationship, the method further includes:
receiving a system information block 1 sent by the network side device, where the system information block 1 carries fourth indication information, and the fourth indication information is used to indicate a correspondence between P SSBs and a physical resource block PRB of a target CORESET0, where the P SSBs correspond to the target CORESET0, and P is an integer greater than 1;
and determining the frequency points corresponding to the P SSBs according to the corresponding relation between the P SSBs and the PRBs of the target CORESET 0.
Optionally, the method further comprises:
receiving a system information block 2 sent by the network side equipment, wherein the system information block 2 carries fifth indication information, the fifth indication information is used for indicating that Q frequency points belong to the same frequency, the Q frequency points correspond to Q SSBs sent by the network side equipment in a frequency division multiplexing mode one to one, and Q is an integer greater than 1;
and executing target operation according to the maximum value or the average value of the Q measurement results which are in one-to-one correspondence with the Q frequency points, wherein the target operation is cell reselection operation or cell switching operation.
In specific implementation, when a cell is subjected to same-frequency reselection and same-frequency switching, the terminal scans and measures all frequency points in the SSBintroFreqcoreset, and selects the maximum value or the average value of the scanning results of all the frequency points to report.
For example, in the same-frequency reselection of a cell, firstly, the RSRPs of all frequency points of the introfreqcoret of the neighboring cell are measured, and the RSRPs of all frequency points of the introfreqcoret of the cell are measured, the average RSRP value or the maximum RSRP value of the measured value of the neighboring cell is selected to be compared with the average RSRP value or the maximum RSRP value of the cell, and the same-frequency reselection S criterion is enhanced as follows:
Srxlev=Qrxlev(max or avg) – (Qrxlevmin+ Qrxlevminoffset) – Pcompensation – Qoffsettemp
Squal = Qqual(max or avg) - (Qrxlevmin+ Qrxlevminoffset) – Qoffsettemp
the meaning of the relevant parameters in the reselection S criterion can be explained in the related art, and is not described herein.
Through the method, the terminal can determine different SSB frequency points of the same network side equipment as the same frequency, and then execute cell same-frequency reselection or cell same-frequency switching, so that the reliability of reselection or switching can be improved.
It should be noted that, the present embodiment is implemented as a network side device corresponding to the foregoing method embodiment, and therefore, reference may be made to the relevant description in the foregoing method embodiment, and the same beneficial effects may be achieved. To avoid repetition of the description, the description is omitted.
The various optional implementations described in the embodiments of the present application may be implemented in combination with each other or implemented separately without conflicting with each other, and the embodiments of the present application are not limited to this.
For ease of understanding, examples are illustrated below:
the application provides a new broadcast channel configuration, and can suggest that the SSB in the frequency band below 1GHz or 2GHz is sent in a broadcast channel frequency division multiplexing mode. The low frequency cannot form a multi-beam environment due to the small antenna array, and SSB wide-beam omnidirectional transmission is basically adopted without multi-beam SSB transmission. The base station sends the SSBs on different frequency domains at the same time, and the terminal searches the SSBs in the full bandwidth and can search the frequency band to which the SSBs are accessed. The method and the device have the advantages that SSB performance of different frequencies is embodied, the terminal can be ensured to be accessed to a 700MHz system, and NR service is started.
The present application may include the following:
firstly, the base station configuration SSB is configured to be low-frequency and high-frequency, and frequencies below 1GHz or 2GHz can adopt frequency division SSB configuration, not only configurable time division configuration.
And secondly, adding frequency domain location of an SSB (frequency location of an SS/PBCH block) configuration, defining the frequency domain location of the SSB in the same time slot, and being dedicated to frequencies below 1GHz or 2 GHz.
a) The SSB frequency domain position can be determined according to a synchronization grid and a channel grid, the synchronization grid determines 700MH frequency points, and the channel grid determines SSB configuration frequency points.
b) On the basis of the grid, frequency division SSB is configured.
i. The frequency division SSB can be uniformly frequency-divided, and the frequency domain interval frequency-hop or the number of the SSBs configured by the base station is added. The uniform frequency division is realized, and the method is suitable for a scene with uniformly distributed interference, such as receiving the interference of bandwidth of every 8MHz under 700MHz, and can configure SSB sending every 8MHz or SSB configuration every 10 MHz.
1. And (3) configuring the frequency-hop by the base station, and setting the SSB position as (RBstart + N RBfrequency-hop), wherein the RBstart > LowBWP, and the RBstart + N RBfrequency-hop < MaxBWP, namely the SSB position is within the range of the BWP, and the SSB position does not need to be searched if the SSB position exceeds the range.
The RBstart can be acquired by the base station itself, and can not be notified to the terminal, and the RBfrequency-hop needs to notify the terminal, so that the terminal can acquire the position of the next SSB.
2. And implicitly acquiring SSB frequency-hop through the number of SSBs and BWP, if KSSB is configured to be 3 in 30MHz bandwidth, each SSB is separated by 10MHz bandwidth, and searching the next SSB frequency point according to the searched first SSB separated by 10MHz bandwidth.
The frequency division SSB has non-uniform frequency division, and the SSB position can be obtained through a frequency hopping indication diagram or a frequency hopping interval formula,
1. an SSB hopping indication map sequence number may be included in the MIB to indicate the location frequency interval (non-uniform configuration) that the SSB may be configured. In order to reduce the SSB overhead, in order to reflect the non-uniform interference situation, a sparse frequency hopping indication map is used to indicate the SSB configuration location.
2. The sparse frequency hopping indication is that each SSB of the base station is spaced by 2^2,3^3,4^4,5^5 and 6^6, the SSB is deployed in a frequency hopping mode, the frequency hopping interval is from dense to sparse, the SSB overhead is reduced, the energy consumption of the terminal is reduced, and meanwhile, the terminal can be ensured to try to access in different frequency domains with full bandwidth, and the influence of non-uniform interference on the SSB is avoided.
3. The frequency hopping indication may also be based on the first SSB index searched by the terminal, and the base station configures a subsequent SSB frequency interval to be (SSB index frequency-hop), so as to implement dense-to-sparse frequency hopping.
c) After receiving the first SSB, the terminal may search for other SSB frequency points in the full bandwidth, and select the best frequency point for access or access one or the best frequency points after diversity demodulation.
According to the frequency domain position of the first SSB and the configured frequency interval, the terminal can directly search SSBs in a plurality of subsequent frequency bands without searching the whole frequency band again. The terminal searches up or down by the frequency-hop, and stops searching if the frequency-hop exceeds the maximum or minimum BWP.
In order to solve the problem that the 700MHz terminal bandwidth is inconsistent with the base station bandwidth, the terminal 30MHz bandwidth and the base station 45MHz bandwidth may configure the RO access corresponding to the first SSB received by the terminal in the SSB1, and no subsequent SSB is searched. Therefore, the base station knows the frequency band bandwidth corresponding to the lowest SSB supported by the base station, and acquires the bandwidth capability supported by the terminal.
Such as: the base station supports 758-803 downlink bandwidths, and the terminal is supported by two capabilities, one is supporting 758-788 30MHz bandwidth TypeA, and the other is 773-803 30MHz bandwidth TypeB. The base station simultaneously configures the SSBs at 760 or 775. The TypeA terminal is accessed after the SSB searched by 760, the TypeB is accessed after the SSB is searched by 775, the base station judges that the access terminal is TypeA or TypeB according to the RO position accessed by the terminal, and then appropriate bandwidth is scheduled for the terminal to perform subsequent services.
And thirdly, the corresponding relation between SSB and CORESET 0.
CORESET0 may also use a resource frequency division multiplexing approach.
In the frequency domain, SSB and CORESET may be 1: a 1 correspondence or a multiple-to-1 correspondence. In a many-to-one relationship, the number of PRB intervals for SSB and CORESET needs to be updated in SIB 1. The relative time domain relation between the SSB and the CORESET adopts the existing network configuration, so that different SSBs correspond to the same CORESET frequency domain, and the time domain is consistent with the existing network.
And fourthly, cell reselection and cell handover enhancement.
This way the terminal cell reselection and cell handover procedures are affected. The cell selection is that the terminal searches for the SSB frequency point in the full frequency band, but the cell reselection and the cell switching are that the same frequency and different frequency are distinguished, a plurality of frequency points are configured, and the terminal appears that one cell has a plurality of frequency points, and the previous cell corresponds to one frequency point.
A frequency set corresponding to a defined cell is newly added in the SIB2, introFreqcoreset is added in intraFreqCellReselectionfo, and the frequency set comprises different SSB frequency points agreeing to the cell configuration and all the frequency points are considered to be the same frequency. When the terminal reselects and switches the same frequency of the cell, the terminal scans and measures all frequency points in the SSBintroFreqcoreset, and the scanning results of all the frequency points are reported by selecting the maximum value or the average value.
For example, in the same-frequency reselection of a cell, firstly, the RSRPs of all frequency points of the introfreqcoret of the neighboring cell are measured, and the RSRPs of all frequency points of the introfreqcoret of the cell are measured, the average RSRP value or the maximum RSRP value of the measured value of the neighboring cell is selected to be compared with the average RSRP value or the maximum RSRP value of the cell, and the same-frequency reselection S criterion is enhanced as follows:
Srxlev=Qrxlev(max/avg) – (Qrxlevmin+ Qrxlevminoffset) – Pcompensation – Qoffsettemp
Squal = Qqual(max/avg) - (Qrxlevmin+ Qrxlevminoffset) – Qoffsettemp
as is apparent from the above, in the present application:
firstly, adding a new same-frequency set, wherein SIB2 indicates that 1 cell can have multiple frequency points, the multiple frequency points are all same frequency, when a terminal starts same-frequency reselection and same-frequency switching, the terminal needs to search multiple frequency points at the same time, searches different frequency points corresponding to different or the same PCIs, and selects a reselected cell or a switched cell according to the maximum value or the average value of RSRPs of all frequency points of different PCIs.
Secondly, adding an SSB frequency division configuration mode:
a) uniformly distributing frequencies, configuring a frequency-hop by a base station, and searching the SSBs at N frequency-hop positions according to the frequency-hop after a terminal receives a first SSB;
b) the frequency is unevenly distributed, the base station configures a frequency hopping position diagram, and SSBs can be configured by adopting fixed frequency hopping positions and intervals of 2^2,3^3,4^4,5^5,6^6 and the like;
c) and frequency is unevenly distributed, and the position (INDEX frequency-hop) of the subsequent SSB frequency domain is obtained according to the received SSB frequency domain INDEX, so that uneven frequency hopping is realized.
And thirdly, adding an enhanced corresponding relation graph of the SSB and the CORESET.
a) The original time domain is enhanced one-to-one into one-to-one or many-to-one in the frequency domain, and the relative relation of the time domain is still consistent with the former relation;
b) the SIB1 adds a corresponding position set of one-to-one correspondence between different SSB positions and RBs of the same CORESET.
Fourthly, after the terminal searches the SSB:
a) a base station informs the first SSB or the best SSB of the CORESET access corresponding to the SSB;
b) according to the frequency hopping indication, the SSBs are received in a specific frequency domain, and the SSBs are combined and accessed.
Therefore, the problem that the access of the terminal fails due to downlink interference is solved by configuring the SSBs with uniform and non-uniform frequency domains. If the interference is average, configuring an average frequency hopping interval; if the interference is uncertain, non-uniform frequency hopping configuration can be configured, the configuration frequency is changed from dense to sparse, the SSB overhead is reduced, and meanwhile, the terminal can be accessed in a scene with low interference. The relation between the enhanced SSB and CORESET0 may be one-to-one corresponding to the frequency domain enhanced in mapping relation 1. The scheme ensures that the terminal can access the system in a downlink interference uncertain mode and use other interference-free resources.
Referring to fig. 6, fig. 6 is a structural diagram of a signal processing apparatus according to an embodiment of the present application. As shown in fig. 6, the signal processing apparatus 600 includes:
the first transceiver 601 is configured to transmit a synchronization signal block SSB to a terminal in a frequency division multiplexing manner.
Optionally, the first transceiver 601 is configured to:
under the condition of meeting a first condition, transmitting the SSB in a frequency division multiplexing mode;
wherein the first condition comprises at least one of:
the working frequency band of the network side equipment is less than the preset value,
the working frequency band of the network side equipment is interfered.
Optionally, the frequency domain locations of the SSBs are uniformly configured or non-uniformly configured.
Optionally, in a case that the frequency domain locations of the SSBs are uniformly configured, the frequency domain locations of the SSBs are determined based on first information, where the first information is any one of: the frequency hopping interval between two adjacent frequency domain positions of the SSB, and the sending number of the SSB.
Optionally, the first transceiver 601 is further configured to:
and sending first indication information to the terminal, wherein the first indication information is used for indicating the first information.
Optionally, in a case that the frequency domain location of the SSB is non-uniformly configured, the frequency domain location of the SSB is determined based on second information, and the second information is any one of: a frequency hopping indication diagram and a frequency hopping interval formula.
Optionally, the first transceiver 601 is further configured to:
and sending second indication information to the terminal, wherein the second indication information is used for indicating the second information.
OptionallyIn the frequency hopping interval formula, an interval between the index of the (i + 1) th time domain position and the index of the ith time domain position is any one of the following values: mi+1M is a positive integer, or the product of the index of the ith time domain position and the preset frequency hopping interval, i is a positive integer.
Optionally, a first SSB of the SSBs carries third indication information, where the third indication information is used to indicate that the terminal accesses the network side device at the frequency point corresponding to the received first SSB.
Optionally, the frequency domain relationship between the SSB and the control resource set CORESET0 satisfies: a one-to-one correspondence, or a many-to-one correspondence.
Optionally, when the frequency domain relationship satisfies a many-to-one correspondence relationship, a system information block 1 of the network side device carries fourth indication information, where the fourth indication information is used to indicate a correspondence relationship between P SSBs and a physical resource block PRB of a target CORESET0, the P SSBs correspond to the target CORESET0, and P is an integer greater than 1.
Optionally, a system information block 2 of the network side device carries fifth indication information, where the fifth indication information is used to indicate that Q frequency points belong to the same frequency, the Q frequency points are in one-to-one correspondence with Q SSBs sent by the network side device in a frequency division multiplexing manner, and Q is an integer greater than 1.
The signal processing apparatus 600 can implement each process of the method embodiment in fig. 2 in the embodiment of the present application, and achieve the same beneficial effects, and is not described herein again to avoid repetition.
Referring to fig. 7, fig. 7 is a second structural diagram of a signal processing apparatus according to an embodiment of the present application. As shown in fig. 7, the signal processing apparatus 700 includes:
a second transceiver 701 for:
receiving an SSB sent by network side equipment in a frequency division multiplexing mode;
and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB.
Optionally, the second SSB is any one of:
the first SSB that is received is,
the SSB having the best signal quality among the received SSBs,
and performing diversity demodulation on the received SSB to obtain the SSB.
Optionally, the apparatus 700 further comprises:
the first processor is configured to determine the received first SSB as the second SSB when the received first SSB carries third indication information;
and the third indication information is used for indicating the terminal to access the network side equipment at the frequency point corresponding to the received first SSB.
Optionally, the frequency domain locations of the SSBs are uniformly configured or non-uniformly configured.
Optionally, in a case that the frequency domain locations of the SSBs are uniformly configured, the frequency domain locations of the SSBs are determined based on first information, where the first information is any one of: the frequency hopping interval between two adjacent frequency domain positions of the SSB, and the sending number of the SSB.
Optionally, the second transceiver 701 is further configured to:
and receiving first indication information sent by the network side equipment, wherein the first indication information is used for indicating the first information.
Optionally, in a case that the frequency domain location of the SSB is non-uniformly configured, the frequency domain location of the SSB is determined based on second information, and the second information is any one of: a frequency hopping indication diagram and a frequency hopping interval formula.
Optionally, the second transceiver 701 is further configured to:
and receiving second indication information sent by the network side equipment, wherein the second indication information is used for indicating the second information.
Optionally, in the frequency hopping interval formula, an interval between the index of the (i + 1) th time domain position and the index of the ith time domain position is any one of the following values: mi+1Or, the product of the index of the ith time domain position and the preset frequency hopping interval, i is a positive integer, and M is a positive integer.
Optionally, the frequency domain relationship between the SSB and the control resource set CORESET0 satisfies: a one-to-one correspondence, or a many-to-one correspondence.
Optionally, in a case that the frequency domain relationship satisfies a many-to-one correspondence relationship, the second transceiver 701 is further configured to:
receiving a system information block 1 sent by the network side device, where the system information block 1 carries fourth indication information, and the fourth indication information is used to indicate a correspondence between P SSBs and a physical resource block PRB of a target CORESET0, where the P SSBs correspond to the target CORESET0, and P is an integer greater than 1;
the apparatus 700 further comprises: and the first processor is used for determining frequency points corresponding to the P SSBs according to the corresponding relation between the P SSBs and the PRBs of the target CORESET 0.
Optionally, the second transceiver 701 is further configured to:
receiving a system information block 2 sent by the network side equipment, wherein the system information block 2 carries fifth indication information, the fifth indication information is used for indicating that Q frequency points belong to the same frequency, the Q frequency points correspond to Q SSBs sent by the network side equipment in a frequency division multiplexing mode one to one, and Q is an integer greater than 1;
and executing target operation according to the maximum value or the average value of the Q measurement results which are in one-to-one correspondence with the Q frequency points, wherein the target operation is cell reselection operation or cell switching operation.
The signal processing apparatus 700 can implement each process of the method embodiment in fig. 5 in the embodiment of the present application, and achieve the same beneficial effects, and is not described herein again to avoid repetition.
The embodiment of the application also provides communication equipment. Referring to fig. 8, a communication device may include a processor 801, a memory 802, and a program 8021 stored on the memory 802 and executable on the processor 801.
When the communication device is a terminal, the program 8021 can implement any steps in the method embodiment corresponding to fig. 2 and achieve the same beneficial effects when being executed by the processor 801, and is not described herein again.
In the case that the communication device is a network-side device, when being executed by the processor 801, the program 8021 may implement any steps in the method embodiment corresponding to fig. 5 and achieve the same beneficial effects, which are not described herein again.
Those skilled in the art will appreciate that all or part of the steps of the method according to the above embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a readable medium. An embodiment of the present application further provides a readable storage medium, where a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, any step in the method embodiment corresponding to fig. 2 or fig. 5 may be implemented, and the same technical effect may be achieved, and in order to avoid repetition, details are not repeated here.
The storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure, and it is intended that such changes and modifications be considered as within the scope of the disclosure.

Claims (28)

1. A signal processing method is applied to network side equipment, and is characterized by comprising the following steps:
and sending the synchronous signal block SSB to the terminal in a frequency division multiplexing mode.
2. The method according to claim 1, wherein the sending a synchronization signal block SSB to a terminal by using frequency division multiplexing comprises:
under the condition of meeting a first condition, transmitting the SSB in a frequency division multiplexing mode;
wherein the first condition comprises at least one of:
the working frequency band of the network side equipment is less than the preset value,
the working frequency band of the network side equipment is interfered.
3. The method of claim 1, wherein the frequency domain locations of the SSBs are uniformly configured or non-uniformly configured.
4. The method of claim 3, wherein in a case that the frequency domain locations of the SSBs are uniformly configured, the frequency domain locations of the SSBs are determined based on first information, and the first information is any one of the following: the frequency hopping interval between two adjacent frequency domain positions of the SSB, and the sending number of the SSB.
5. The method according to claim 4, wherein before sending the SSB to the terminal in a frequency division multiplexing manner, the method further comprises:
and sending first indication information to the terminal, wherein the first indication information is used for indicating the first information.
6. The method of claim 3, wherein in the case that the frequency domain location of the SSB is non-uniformly configured, the frequency domain location of the SSB is determined based on second information, and the second information is any one of the following: a frequency hopping indication diagram and a frequency hopping interval formula.
7. The method according to claim 6, wherein before sending the SSB to the terminal in a frequency division multiplexing manner, the method further comprises:
and sending second indication information to the terminal, wherein the second indication information is used for indicating the second information.
8. The method according to claim 6, wherein in the frequency hopping interval formula, an interval between an index of an i +1 th time domain position and an index of an i-th time domain position is any one of the following values:
Mi+1and M is a positive integer,
or, the product of the index of the ith time domain position and the preset frequency hopping interval, wherein i is a positive integer.
9. The method according to claim 1, wherein a first SSB of the SSBs carries third indication information, and the third indication information is used for indicating that the terminal accesses the network side device at a frequency point corresponding to the received first SSB.
10. The method of claim 1, wherein the frequency domain relationship between the SSB and the control resource set CORESET0 satisfies: a one-to-one correspondence, or a many-to-one correspondence.
11. The method according to claim 10, wherein in a case that the frequency domain relationship satisfies a many-to-one correspondence relationship, fourth indication information is carried in a system information block 1 of the network side device, where the fourth indication information is used to indicate a correspondence relationship between P SSBs and physical resource blocks PRB of a target CORESET0, the P SSBs correspond to the target CORESET0, and P is an integer greater than 1.
12. The method according to claim 1, wherein a system information block 2 of the network side device carries fifth indication information, the fifth indication information is used to indicate that Q frequency points belong to a same frequency, the Q frequency points are in one-to-one correspondence with Q SSBs sent by the network side device in a frequency division multiplexing manner, and Q is an integer greater than 1.
13. A signal processing method applied to a terminal is characterized by comprising the following steps:
receiving an SSB sent by network side equipment in a frequency division multiplexing mode;
and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB.
14. The method of claim 13, wherein the second SSB is any one of:
the first SSB that is received is,
the SSB having the best signal quality among the received SSBs,
and performing diversity demodulation on the received SSB to obtain the SSB.
15. The method according to claim 14, wherein before accessing the network-side device at the frequency point corresponding to the second SSB, the method further comprises:
determining the received first SSB as the second SSB under the condition that the received first SSB carries third indication information;
and the third indication information is used for indicating the terminal to access the network side equipment at the frequency point corresponding to the received first SSB.
16. The method of claim 13, wherein the frequency domain locations of the SSBs are uniformly configured or non-uniformly configured.
17. The method of claim 16, wherein in a case that the frequency domain locations of the SSBs are uniformly configured, the frequency domain locations of the SSBs are determined based on first information, and the first information is any one of the following: the frequency hopping interval between two adjacent frequency domain positions of the SSB, and the sending number of the SSB.
18. The method according to claim 17, wherein before the receiving the SSB sent by the network side device in the frequency division multiplexing manner, the method further comprises:
and receiving first indication information sent by the network side equipment, wherein the first indication information is used for indicating the first information.
19. The method as claimed in claim 16, wherein in case that the frequency domain location of the SSB is non-uniformly configured, the frequency domain location of the SSB is determined based on second information, the second information being any one of: a frequency hopping indication diagram and a frequency hopping interval formula.
20. The method of claim 19, wherein before the receiving the SSB sent by the network side device in the frequency division multiplexing manner, the method further comprises:
and receiving second indication information sent by the network side equipment, wherein the second indication information is used for indicating the second information.
21. The method of claim 19, wherein in the hopping interval formula, an interval between an index of an i +1 th time domain position and an index of an i-th time domain position is any one of the following values: mi+1Or, the product of the index of the ith time domain position and the preset frequency hopping interval, i is a positive integer, and M is a positive integer.
22. The method of claim 13, wherein the frequency domain relationship between the SSB and the control resource set CORESET0 satisfies: a one-to-one correspondence, or a many-to-one correspondence.
23. The method of claim 22, wherein in the case that the frequency domain relationship satisfies a many-to-one correspondence, the method further comprises:
receiving a system information block 1 sent by the network side device, where the system information block 1 carries fourth indication information, and the fourth indication information is used to indicate a correspondence between P SSBs and a physical resource block PRB of a target CORESET0, where the P SSBs correspond to the target CORESET0, and P is an integer greater than 1;
and determining the frequency points corresponding to the P SSBs according to the corresponding relation between the P SSBs and the PRBs of the target CORESET 0.
24. The method of claim 13, further comprising:
receiving a system information block 2 sent by the network side equipment, wherein the system information block 2 carries fifth indication information, the fifth indication information is used for indicating that Q frequency points belong to the same frequency, the Q frequency points correspond to Q SSBs sent by the network side equipment in a frequency division multiplexing mode one to one, and Q is an integer greater than 1;
and executing target operation according to the maximum value or the average value of the Q measurement results which are in one-to-one correspondence with the Q frequency points, wherein the target operation is cell reselection operation or cell switching operation.
25. A signal processing apparatus, characterized by comprising:
and the first transceiver is used for sending the synchronization signal block SSB to the terminal in a frequency division multiplexing mode.
26. A signal processing apparatus, characterized by comprising:
a second transceiver to:
receiving an SSB sent by network side equipment in a frequency division multiplexing mode;
and accessing the network side equipment at a frequency point corresponding to a second SSB, wherein the second SSB is determined based on the received SSB.
27. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that the processor, for reading the program in the memory, implements the steps in the signal processing method according to any one of claims 1 to 12; or, a step in a signal processing method according to any one of claims 13 to 24.
28. A readable storage medium storing a program, wherein the program realizes the steps in the signal processing method according to any one of claims 1 to 12 when executed by a processor; or, a step in a signal processing method according to any one of claims 13 to 24.
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