CN113225689A - Information transmission method and device and computer readable storage medium - Google Patents

Information transmission method and device and computer readable storage medium Download PDF

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Publication number
CN113225689A
CN113225689A CN202010072084.5A CN202010072084A CN113225689A CN 113225689 A CN113225689 A CN 113225689A CN 202010072084 A CN202010072084 A CN 202010072084A CN 113225689 A CN113225689 A CN 113225689A
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China
Prior art keywords
ssb
indication signal
period
time domain
system frame
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CN202010072084.5A
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CN113225689B (en
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吴丹
胡丽洁
徐晓东
夏亮
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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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Priority to CN202010072084.5A priority Critical patent/CN113225689B/en
Priority to PCT/CN2021/073139 priority patent/WO2021147962A1/en
Publication of CN113225689A publication Critical patent/CN113225689A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

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

Abstract

The embodiment of the invention provides an information transmission method, an information transmission device and a computer readable storage medium, wherein the method comprises the following steps: the network side sends an indication signal, wherein the indication signal indicates one or more of the following information: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB; quasi co-located (QCL) case of SSB.

Description

Information transmission method and device and computer readable storage medium
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to an information transmission method, an information transmission apparatus, and a computer-readable storage medium.
Background
In the initial synchronization stage, a large-connection internet of things (mtc) user needs to combine and receive synchronization and broadcast signals because the user needs to obtain a large coverage gain. According to the current design of NR synchronization and broadcast signal block (SS/PBCH block, SSB), the R15 terminal searches for synchronization and broadcast signals at 20ms period when it initially accesses. Since the PSS and SSS signals do not change with time, they can be combined all the time in a period of 20ms, but the Transport Block (TB) of the Physical Broadcast Channel (PBCH) is generated once in 80ms, which is constant within 80ms and may change within 80ms, so that combining 4 times in 80ms can be performed only according to the assumption of the maximum period of 80ms, and at most, a combining gain of 6dB can be achieved, which is difficult to meet the coverage enhancement requirement of all the wide coverage users.
In order to enhance the coverage as much as possible, it is desirable to enable as many repeated transmissions on the SS/PBCH block within 80ms, which is beneficial for the terminals to perform combining to achieve coverage enhancement. But the related technology only supports the combination of SSBs with the same index within 80ms, and the coverage enhancement effect achieved is limited; and during the combination, the terminal is required to make an assumption on the position of the current SSB for blind detection, so that the complexity is high and the time delay is large.
Disclosure of Invention
In view of the above, embodiments of the present invention are intended to provide an information transmission method, an information transmission apparatus, and a computer-readable storage medium.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides an information transmission method, which is applied to a network side and comprises the following steps:
sending an indication signal, wherein the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
Wherein the period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of:
5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
Wherein the sending the indication signal comprises:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
Wherein, when the indication signal is transmitted on three OFDM symbols, the method comprises:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
Optionally, when the indication signal is sent on three OFDM symbols, the method includes:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
The embodiment of the invention also provides an information transmission method which is applied to a terminal side and comprises the following steps:
receiving an indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and performing merging processing on the SSB based on the indication signal.
Wherein the period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of:
5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
An embodiment of the present invention further provides an information transmission apparatus, including:
the sending module is used for sending an indication signal;
the indicating module is used for indicating one or more of the following information through the indicating signal:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
An embodiment of the present invention further provides an information transmission apparatus, including:
the receiving module is used for receiving the indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and the processing module is used for carrying out combination processing on the SSB based on the indication signal.
An embodiment of the present invention further provides an information transmission apparatus, including: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the above method when running the computer program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the above-mentioned method.
The information transmission method, the information transmission device and the computer-readable storage medium provided by the embodiment of the invention send an indication signal, wherein the indication signal indicates one or more of the following information: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB; quasi co-located (QCL) case of SSB. The embodiment of the invention carries out clear indication by repeatedly indicating information terminal combination for the terminal to carry out SSB combination, thereby improving the receiving combination gain of the terminal and enlarging the coverage; and blind detection and attempt combination are not needed, so that the indication overhead is reduced, the blind detection complexity of the terminal is reduced, and the search time is further shortened.
Drawings
FIG. 1 is a schematic diagram of an embodiment of SSB mergeable between 80 ms;
fig. 2 is a first schematic flow chart of an information transmission method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an information transmission method according to an embodiment of the present invention;
fig. 4 is a first schematic structural diagram of an information transmission device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described below with reference to the figures and examples.
In a wide coverage scenario, multiple repeated transmissions are one of the means to expand the signal coverage.
In NB-IoT, NPSS, NSSS and NPBCH are all completely new designs, including resource mapping and transmission cycles, to support multiple repeated transmissions required by NB-IoT users.
The design of 5G NR (new air interface) is mainly focused on the eMBB scenario, and currently, no targeted design is performed for the requirement of wide coverage and large connection.
In the NR design, there may be one SSB group every 5ms within 80ms, and the SSB index within a group is different, and the SSB index between groups repeats.
In the protocol, the SSBs with the same index between 20ms are assumed to have a Quasi-Co-Location (QCL) relationship, where Quasi-Co-Location means that the terminal may consider that some statistical characteristics in time and/or space of the two transmissions are consistent, such as delay, delay spread, doppler delay, and transmit beam. The PBCH of the same content in two SSBs with quasi-co-location relationship can be combined and demodulated.
Within 80ms, there are many possibilities for the formats that can be merged, as follows:
type 1: SSB merging of the same index in 80 ms;
type 2: SSB of the same index in different 20ms within 80ms are merged;
type 3: SSB of the same index in different 5ms within 20ms are merged;
type 4: different SSB indexes can be merged (with QCL relationships) within 5 ms.
The Type 1 is combined within 80ms, and the time delay is large; type 2 is a merge format that is already supported at present; type 3 and Type 4 are more preferential repeating transmission formats, a combining gain of more than 4db can be obtained at 80ms, and the delay is low, as shown in fig. 1.
In order to enable a terminal to obtain repeated information of an SSB before demodulating a Physical Broadcast Channel (PBCH), so as to perform combined reception on a broadcast signal for the purpose of coverage enhancement, an embodiment of the present invention provides an information transmission method, as shown in fig. 2, where the method is applicable to a network side, and includes:
step 201: sending an indication signal;
step 202: the indication signal indicates one or more of the following information: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB; quasi co-located QCL case of SSB.
The embodiment of the invention carries out clear indication by repeatedly indicating information terminal combination for the terminal to carry out SSB combination, thereby improving the receiving combination gain of the terminal and enlarging the coverage; and blind detection and attempt combination are not needed, so that the indication overhead is reduced, the blind detection complexity of the terminal is reduced, and the search time is further shortened.
In the embodiment of the present invention, the period of the SSB is a period of the SSB associated with the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
In the embodiment of the present invention, the SSB period is:
5ms, or 10ms, or 20 ms.
In this embodiment of the present invention, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame (for example: the Mth 10ms) within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
In an embodiment of the present invention, the QCL condition of the SSB includes one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
In one embodiment, the indication signal is also used to indicate cell level information.
In this embodiment of the present invention, the sending the indication signal includes:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
Wherein, when the indication signal is transmitted on three OFDM symbols, the method comprises:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
In the embodiment of the present invention, when the indication signal is sent on three OFDM symbols, the method includes:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
An embodiment of the present invention further provides an information transmission method, as shown in fig. 3, where the method is applicable to a terminal side, and includes:
step 301: receiving an indication signal; the indication signal indicates one or more of the following information: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB; quasi co-located QCL conditions for SSBs;
step 302: and performing merging processing on the SSB based on the indication signal.
In the embodiment of the present invention, the period of the SSB is a period of the SSB associated with the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB at the same frequency point as the indication signal.
In the embodiment of the present invention, the SSB period is:
5ms, or 10ms, or 20 ms.
In this embodiment of the present invention, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
In the embodiment of the present invention, the time domain position of the indication signal is a first half frame or a second half frame of a system frame in which the indication signal is located.
In this embodiment of the present invention, the time domain position of the SSB is a time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
In an embodiment of the present invention, the QCL condition of the SSB includes one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
In the embodiment of the present invention, the indication signal is further used for indicating cell level information.
In order to implement the foregoing method embodiment, an embodiment of the present invention further provides an information transmission apparatus, as shown in fig. 4, where the apparatus includes:
a sending module 401, configured to send an indication signal;
an indicating module 402, configured to indicate one or more of the following information through the indication signal: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB; quasi co-located QCL case of SSB.
In the embodiment of the present invention, the period of the SSB is a period of the SSB associated with the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
In the embodiment of the present invention, the SSB period is:
5ms, or 10ms, or 20 ms.
In this embodiment of the present invention, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
In an embodiment of the present invention, the QCL condition of the SSB includes one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
In one embodiment, the indication signal is also used to indicate cell level information.
In this embodiment of the present invention, the sending module 401 sends the indication signal, including:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
Wherein, when the indication signal is transmitted on three OFDM symbols, the transmitting module 401 is further configured to:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
In this embodiment of the present invention, when the indication signal is sent on three OFDM symbols, the sending module 401 is further configured to:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
An embodiment of the present invention further provides an information transmission apparatus, as shown in fig. 5, the apparatus includes:
a receiving module 501, configured to receive an indication signal; the indication signal indicates one or more of the following information: the period of the synchronization/broadcast signal block SSB; a time domain position of the indication signal; the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
a processing module 502, configured to perform a combining process on the SSB based on the indication signal.
In the embodiment of the present invention, the period of the SSB is a period of the SSB associated with the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
In the embodiment of the present invention, the SSB associated with the indication signal is an SSB at the same frequency point as the indication signal.
In the embodiment of the present invention, the SSB period is:
5ms, or 10ms, or 20 ms.
In this embodiment of the present invention, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
In the embodiment of the present invention, the time domain position of the indication signal is a first half frame or a second half frame of a system frame in which the indication signal is located.
In this embodiment of the present invention, the time domain position of the SSB is a time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
In this embodiment of the present invention, the QCL condition of the SSB includes one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
In the embodiment of the present invention, the indication signal is further used for indicating cell level information.
An embodiment of the present invention further provides an information transmission apparatus, including: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to execute, when running the computer program:
sending an indication signal, wherein the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
Wherein the period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of: 5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
When the indication signal is sent, the processor is further configured to execute, when the computer program is run, the following steps:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
When the indication signal is transmitted on three OFDM symbols, the processor is further configured to, when running the computer program, perform:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
When the indication signal is transmitted on three OFDM symbols, the processor is further configured to, when running the computer program, perform:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
An embodiment of the present invention further provides an information transmission apparatus, including: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to execute, when running the computer program:
receiving an indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and performing merging processing on the SSB based on the indication signal.
The period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of: 5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
It should be noted that: in the above embodiment, when the apparatus performs information transmission, only the division of the program modules is taken as an example, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the apparatus provided in the above embodiments and the corresponding method embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.
In an exemplary embodiment, the embodiment of the present invention also provides a computer-readable storage medium, which may be a Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disc, or CD-ROM; or may be a variety of devices including one or any combination of the above memories, such as a mobile phone, computer, tablet device, personal digital assistant, etc.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs:
sending an indication signal, wherein the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
Wherein the period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of: 5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
When the indication signal is sent, the computer program is executed by a processor, and further executes:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
When the indication signal is transmitted on three OFDM symbols, the computer program, when executed by a processor, further performs:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
When the indication signal is transmitted on three OFDM symbols, the computer program, when executed by a processor, further performs:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs:
receiving an indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and performing merging processing on the SSB based on the indication signal.
The period of the SSB is the period of the SSB associated with the indication signal.
Wherein, the SSB associated with the indication signal is an SSB having a fixed frequency offset with the indication signal.
And the SSB associated with the indication signal is the SSB at the same frequency point as the indication signal.
Wherein the SSB has a period of: 5ms, or 10ms, or 20 ms.
Wherein, the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
Wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
Wherein, the time domain position of the indication signal is the nth 20ms within 80ms of the system frame in which the indication signal is located; and N is an integer.
Wherein, the time domain position of the indication signal is the Mth system frame within 80ms of the system frame in which the indication signal is located; and M is an integer.
The time domain position of the indication signal is the first half frame or the second half frame of the indication signal in a system frame.
And the time domain position of the SSB is the time domain position of the SSB associated with the indication signal.
Wherein, the time domain position of the SSB is the nth 20ms within 80ms of the system frame in which the SSB is located.
Wherein, the time domain position of the SSB is the mth system frame within 80ms of the system frame in which the SSB is located.
The time domain position of the SSB is a first half frame or a second half frame of the SSB in a system frame.
Wherein, the QCL condition of the SSB comprises one or more of the following information:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
Wherein the indication signal is further used for indicating cell level information.
The invention is described below with reference to application examples.
The present embodiment provides a Repetition Indication Signal (RIS) for indicating the Repetition of the synchronization and broadcast signal block SSB, so that the terminal determines the combining scheme.
To indicate the 5ms location of the RIS, there are 16 possibilities (80ms/5 ms). In addition, there are at least 3 possibilities to indicate how long the terminal should merge the repeatedly appearing SSBs (5ms after, i.e., 5ms SSB period; 10ms after, i.e., 10ms SSB period; 20ms after, i.e., 20ms SSB period).
In addition, if SSBs of multiple different indexes can be combined within 5ms, the delay can be further reduced, and the coverage can be enhanced, so that an indication can be performed, for example, if several SSBs are repeated, and/or SSB index information can be combined.
The repetition indication signal of the present embodiment may indicate at least one of the following information:
the transmission period of the SSBs, i.e., how long apart SSBs with the same index are QCL;
the position within 80ms of 5ms, or 10ms, or 20ms of the signal RIS;
within 5ms of the signal RIS, the SSBs of different indices repeat the case, i.e. which SSBs are QCL.
For the RIS sent by the base station, the search procedure at the terminal side may be:
the terminal firstly searches a repeated indication signal RIS, and obtains time information, merging information and the like sent by the RIS by detecting the RIS; and then searching for the PSS and the SSS, and performing combined reception on the PBCH according to the indication of the RIS.
In this embodiment, cell-level information such as a cell ID may also be superimposed on the repeated indication signal to distinguish different cells, and the repeated indication signal additionally has a function of indicating the three types of information on the basis of the cell-level information. Therefore, the flow of terminal search may also be:
and searching the PSS and the SSS, searching corresponding repeated indication signals after acquiring the cell ID information, and merging and receiving the PBCH according to the indication of the RIS.
The configuration of the PIS may include at least the method embodied in the following embodiments.
Example one
This embodiment transmits a sequence (e.g., a PN sequence, a ZC sequence, etc.) over 3 OFDM symbols, where the sequence on each symbol indicates the following information:
symbol 1: using 3 sequences to indicate SSB transmission period, 5ms, 10ms and 20 ms;
symbol 2: with 16 sequences, it is indicated that the current RIS is located on the 5 th ms within 80 ms;
symbol 3: the SSBs that are repeatedly transmitted within 5ms of the current RIS are indicated by m (integer) sequences, specifically:
one sequence indicates that: no SSB QCL;
one sequence indicates that: SSBs corresponding to SSB index 2n and 2n +1 are QCL; n is 0,1, …
One sequence indicates that: the SSBs corresponding to the SSB index 4n, 4n +1, 4n +2, 4n +3 are QCL; n is 0,1, …
One sequence indicates that: SSBs corresponding to SSB index 8n, 8n +1, 8n +2, 8n +3, …, 8n +7 are QCL, n is 0,1, …
One sequence indicates that: SSBs corresponding to SSB index 16n, 16n +1, 16n +2, 16n +3, …, 16n +15 are QCL, n is 0,1, …
One sequence indicates that: SSBs corresponding to SSB index 32n, 32n +1, 32n +2, 32n +3, …, 32n +31 are QCL, n is 0,1, …
One sequence indicates that: SSBs corresponding to SSB index 64n, 64n +1, 64n +2, 64n +3, …, 64n +63 are QCL, n is 0,1, …
It may also be indicated that SSBs with even SSB index are QCL, SSBs with odd SSB index are QCL, etc.
Example two
In the first embodiment, the terminal needs to perform 19 blind detections on the first two symbols in total, and if the terminal carries the information of the cell ID again, the blind detection complexity is greatly increased, and there may be 19 × N _ CellID blind detections. Considering that the information transmitted on the first two symbols is redundant, especially when the SSB transmission period is 10ms or 20ms, the information can be combined without explicitly knowing the 5ms boundary information, so to reduce the terminal blind detection complexity, the following method can be performed to indicate, as shown in table 1:
transmitting a sequence over 3 symbols, wherein the sequence over each symbol indicates the following information:
Figure BDA0002377550500000211
TABLE 1
It can be seen that, in the second embodiment, 4 times of blind tests are required to be performed on the symbol 1, and only 4 times or 8 times of blind tests are required to be performed on the symbol 2 according to the detection result on the symbol 1, and only 8 times or 12 times of blind tests are required to be performed on the first two symbols, thereby greatly reducing the complexity of the blind tests.
EXAMPLE III
This embodiment only sends the sequences on symbol 1 and symbol 2, and does not send the sequence on symbol 3, i.e. SSBs with different indices within 5ms are not supported for combining.
Example four
This embodiment only sends the sequence on the symbol 1 and the symbol 3, where the symbol 1 can be sent in the manner of the first embodiment or the second embodiment, that is, SSBs between 5ms/10ms/20ms and SSBs within 5ms are supported for combining, but the terminal also needs to blind detect the combining times.
EXAMPLE five
In this embodiment, only the sequences on the symbol 2 and the symbol 3 are sent, where the sequence on the symbol 2 only needs to indicate the position information of 20ms, that is, the current 20ms is in the order of 80ms, the terminal merges the SSBs of the same index at an interval of 20ms according to the assumption of a period of 20ms, and the actual merging time is determined according to the 20ms indicated by the sequence. And SSBs of different SSB indexes within 5ms may be combined according to the sequence sent on symbol 3.
EXAMPLE six
In this embodiment, only the sequence on symbol 1 is sent, and the terminal only combines the SSBs of the same index spaced by the period according to the period indicated by the sequence, and the terminal needs to perform blind detection for the actual number of times of combination.
EXAMPLE seven
In this embodiment, only the sequence on symbol 2 is sent, but only the 4 sequences can be used to indicate the 20ms currently located in 80ms, and then the terminal combines the SSBs of the same index at an interval of 20ms only according to the assumption of 20ms, and the actual number of combinations is determined according to the 20ms indicated by the sequence.
Example eight
In this embodiment, only the sequence on symbol 3 is sent, and the terminal always combines the SSBs of the same index at an interval of 20ms according to the assumption of a 20ms period, and the terminal needs to perform blind detection for the actual number of times of combination. However, SSBs of different SSB indexes within 5ms may be combined according to the sequence transmitted on symbol 3.
Example nine
This embodiment may combine the indication period and time information on one symbol as follows:
sequence 1: 5ms period, and the current RIS is located at the 1 st 5ms within 80 ms;
sequence 2: 5ms period, and the current RIS is located at the 2 nd 5ms within 80 ms;
…
sequence 16: 5ms period, and the current RIS is located at the 16 th 5ms within 80 ms;
sequence 17: a 10ms period, and the current RIS is located at the 1 st 10ms within 80 ms;
sequence 18: a 10ms period, and the current RIS is located at the 2 nd 10ms within 80 ms;
…
sequence 24: a 10ms period, and the current RIS is located at the 8 th 10ms within 80 ms;
sequence 25: 20ms period, and the current RIS is located at the 1 st 20ms within 80 ms;
sequence 26: 20ms period and the current RIS is located at the 2 nd 20ms within 80 ms;
sequence 27: 20ms period, and the current RIS is located at the 3 rd 20ms within 80 ms;
sequence 28: 20ms period and the current RIS is located at the 4 th 20ms within 80 ms;
the embodiment of the invention can improve the receiving and combining gain of the terminal under the existing SSB transmission condition, enlarge the coverage, and can clearly indicate the combination of the terminal through the RIS for the SSB combination of the terminal without blind test and trial combination, thereby reducing the indicating expense, reducing the blind test complexity of the terminal and further shortening the searching time.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (33)

1. An information transmission method is applied to a network side, and is characterized by comprising the following steps:
sending an indication signal, wherein the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
2. The method of claim 1, wherein the period of the SSB is a period of the SSB associated with the indication signal.
3. The method of claim 2, wherein the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
4. The method of claim 2, wherein the SSB associated with the indication signal is an SSB in the same frequency point as the indication signal.
5. The method of claim 1, wherein the SSB has a period of:
5ms, or 10ms, or 20 ms.
6. The method of claim 1, wherein the time-domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
7. The method of claim 6, wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
8. The method of claim 6, wherein the time domain position of the indication signal is:
the system frame in which the indication signal is located is the Nth 20ms within 80 ms; n is an integer; alternatively, the first and second electrodes may be,
the system frame in which the indication signal is located is the Mth system frame within 80 ms; and M is an integer.
9. The method of claim 1, wherein the time-domain position of the indication signal is a first half frame or a second half frame of a system frame in which the indication signal is located.
10. The method of claim 1, wherein the temporal location of the SSB is a temporal location of an SSB associated with the indication signal.
11. The method of claim 10, wherein the temporal location of the SSB is one or more of:
the system frame where the SSB is located is the Nth 20ms within 80 ms;
the system frame where the SSB is located is the Mth system frame within 80 ms;
the SSB is located in the first half frame or the second half frame of a system frame.
12. The method of claim 1, wherein the QCL condition of the SSB comprises one or more of:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
13. The method of claim 1, wherein the indication signal is further used to indicate cell level information.
14. The method of claim 1, wherein said sending the indication signal comprises:
the indication signal is transmitted over a signal sequence on at least one orthogonal frequency division multiplexing, OFDM, symbol.
15. The method of claim 14, wherein when the indication signal is transmitted on three OFDM symbols, the method comprises:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 20ms on one symbol;
correspondingly indicating which 20ms within 80ms the indication signal is positioned on by using 4 information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
16. The method of claim 14, wherein when the indication signal is transmitted on three OFDM symbols, the method comprises:
an information sequence is used for correspondingly indicating the transmission period of the SSB for 10ms on a symbol, or an information sequence is used for correspondingly indicating the transmission period of the SSB for 5ms on the symbol, and the current 5ms is the first 5ms or the last 5ms of a system frame;
indicating which 10ms within 80ms the indication signal is located in correspondence with eight information sequences on one symbol;
corresponding n information sequences on one symbol to indicate which SSBs have QCL relation in 5ms of the indication signal; and n is a positive integer.
17. An information transmission method applied to a terminal side, the method comprising:
receiving an indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and performing merging processing on the SSB based on the indication signal.
18. The method of claim 17, wherein the period of the SSB is a period of an SSB associated with the indication signal.
19. The method of claim 18, wherein the SSB associated with the indication signal is an SSB having a fixed frequency offset from the indication signal.
20. The method of claim 18, wherein the SSB associated with the indication signal is an SSB at the same frequency as the indication signal.
21. The method of claim 17, wherein the SSB has a period of:
5ms, or 10ms, or 20 ms.
22. The method of claim 17, wherein the time domain position of the indication signal is: and the system frame where the indication signal is located at the position in the preset period.
23. The method of claim 22, wherein a time length of the time period is the same as a time length of a transmission cycle of the SSB.
24. The method of claim 22, wherein the time domain position of the indication signal is:
the system frame in which the indication signal is located is the Nth 20ms within 80 ms; n is an integer; alternatively, the first and second electrodes may be,
the system frame in which the indication signal is located is the Mth system frame within 80 ms; and M is an integer.
25. The method of claim 17, wherein the time-domain position of the indication signal is a first half frame or a second half frame of a system frame in which the indication signal is located.
26. The method of claim 17 wherein the time domain location of the SSB is a time domain location of an SSB associated with the indication signal.
27. The method of claim 26, wherein the temporal location of the SSB is one or more of:
the system frame where the SSB is located is the Nth 20ms within 80 ms;
the system frame where the SSB is located is the Mth system frame within 80 ms;
the SSB is located in the first half frame or the second half frame of a system frame.
28. The method of claim 17, wherein the QCL condition of the SSB comprises one or more of:
SSBs with the same sequence number and the time interval of the SSB period are QCL;
SSBs with different indexes in a preset time domain range of the indication signal are QCL.
29. The method of claim 17, wherein the indication signal is further used for indicating cell level information.
30. An information transmission apparatus, characterized in that the apparatus comprises:
the sending module is used for sending an indication signal;
the indicating module is used for indicating one or more of the following information through the indicating signal:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL case of SSB.
31. An information transmission apparatus, characterized in that the apparatus comprises:
the receiving module is used for receiving the indication signal; the indication signal indicates one or more of the following information:
the period of the synchronization/broadcast signal block SSB;
a time domain position of the indication signal;
the time domain location of the SSB;
quasi co-located QCL conditions for SSBs;
and the processing module is used for carrying out combination processing on the SSB based on the indication signal.
32. An information transmission apparatus, characterized in that the apparatus comprises: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is adapted to perform the steps of the method of any one of claims 1 to 16 or to perform the steps of the method of any one of claims 17 to 29 when running the computer program.
33. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 16 or carries out the steps of the method of any one of claims 17 to 29.
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CN116506865B (en) * 2023-06-28 2023-10-03 中国电信股份有限公司 SSB period resetting method and device, computer storage medium and electronic equipment

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