CN111756473B - Information transmission method and terminal - Google Patents
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- CN111756473B CN111756473B CN201910249831.5A CN201910249831A CN111756473B CN 111756473 B CN111756473 B CN 111756473B CN 201910249831 A CN201910249831 A CN 201910249831A CN 111756473 B CN111756473 B CN 111756473B
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W74/08—Non-scheduled access, e.g. ALOHA
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Abstract
The embodiment of the invention provides an information transmission method and a terminal, wherein the method comprises the following steps: obtaining the MCS level or the transmission related parameter used by the terminal through the mapping relation between the MCS level and the transmission related parameter of the coding modulation mode; and carrying out information transmission according to the transmission related parameters of the terminal and the MCS level. The scheme of the invention supports the scheduling-free transmission or the random access terminal to determine the MCS used by the terminal in the non-connection state and carry out the self-adaptive transmission of the link, thereby saving the signaling cost.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method and a terminal.
Background
One transmission scheme in the 5G NR standard is a pre-scheduling/non-scheduling/grant-free based transmission scheme (transmission with configured grant), and a base station is pre-configured with relevant parameters for transmission through RRC (radio resource control) signaling. The user adopts the preconfigured transmission parameters to directly or in an L1 signal triggering mode to carry out data transmission on the preconfigured time-frequency resource, and does not need to send a scheduling request (Scheduling Request, SR) and wait for a dynamic scheduling signaling, thereby reducing the data transmission delay and the control signaling cost required by the dynamic scheduling.
On the other hand, the multiple access modes adopted in the 4G LTE system and the current version of the 5G NR standard are both orthogonal multiple access, for example, SC-FDMA (Single-carrier Frequency-Division Multiple Access) is adopted in the uplink in 5G or OFDMA (Orthogonal Frequency Division Multiple Access ) is adopted in the downlink.
Currently, a Non-orthogonal multiple access (Non-Orthogonal Multiple Access, NOMA) technology is receiving a great deal of attention, and a 5G NR standard is also being discussed in relation to a transmission scheme combined with the NOMA technology, where the combination of pre-scheduling/Non-scheduling/grant-free transmission and the NOMA technology can further increase the number of users served on the same time-frequency resource, improve the spectrum efficiency, improve the robustness of the system under the collision condition of the users, and so on.
On the one hand, compared to existing configured-grant transmissions: the configured grant of Type-1 needs to reinitiate the RRC procedure to modify the coding modulation scheme, and the configured grant of Type-2 needs to perform MAC deactivation and activation operations, so that the configuration effective time (delay) and signaling overhead are both relatively large, and meanwhile, the method is unfavorable for terminal energy saving. On the other hand, both configured-grant transmissions are in RRC-connected state, but the existing standard does not support how to perform link adaptation when the terminal is in inactive/idle state.
It should be noted that: in addition to the above-described scenario of Grant-free transmission using non-orthogonal multiple access, the above-described similar problems also exist for the scenario of non-scheduled transmission or random access when orthogonal transmission is used.
Disclosure of Invention
The invention provides an information transmission method and a terminal. The supporting terminal can determine the MCS used by the supporting terminal and carry out the self-adaptive transmission of the link, thereby saving the signaling overhead.
In order to solve the technical problems, the embodiment of the invention provides the following scheme:
an information transmission method applied to a terminal supporting scheduling-free transmission or initiating random access, the method comprising:
obtaining the MCS level or the transmission related parameter used by the terminal through the mapping relation between the MCS level and the transmission related parameter of the coding modulation mode;
and carrying out information transmission according to the transmission related parameters of the terminal and the MCS level.
The method for obtaining the MCS level used by the terminal through the mapping relation between the MCS level and the transmission related parameters in the coding modulation mode comprises the following steps:
and acquiring the transmission related parameters currently used by the terminal, and acquiring the MCS level corresponding to the transmission related parameters currently used by the terminal through the mapping relation between the transmission related parameters and the MCS.
The method for obtaining the transmission related parameters currently used by the terminal comprises the following steps:
and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
The method for obtaining the transmission related parameters currently used by the terminal through the mapping relation between the MCS level and the transmission related parameters comprises the following steps:
and acquiring the MCS level currently used by the terminal, and acquiring the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter.
The method for obtaining the MCS level currently used by the terminal comprises the following steps:
and obtaining the MCS level currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
Wherein the transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence.
The symbol-level scrambling sequences are in one-to-one correspondence with the MCSs, the reference signals are in one-to-one correspondence with the MCSs, and the preamble sequences are in one-to-one correspondence with the MCSs.
Wherein the transmission related parameters include: and when the symbol-level scrambling sequence is carried out, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps:
obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS;
and scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level.
Wherein the symbol-level scrambling sequence is generated by at least two m-sequences or by at least two Gold sequences.
Wherein the symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
from the generator polynomial of the m-sequence:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
According to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An N-th term of the second m-sequence is represented, wherein N is 0.ltoreq.n.ltoreq.N-1, and N represents a natural number.
Wherein the symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
Wherein a plurality of terminals use the same identity to initialize a scrambling sequence used by the terminals.
Wherein the transmission related parameters include: and when the reference signal is transmitted, information transmission is carried out according to the transmission related parameters of the terminal and the MCS level, and the method comprises the following steps:
and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
Wherein the transmission related parameters include: and in the preamble sequence, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps:
and initiating random access by using the preamble sequence according to the MCS level.
The embodiment of the invention also provides a terminal, which comprises:
the processor is used for obtaining the MCS level or the transmission related parameter used by the terminal through the mapping relation between the MCS level and the transmission related parameter of the coding modulation mode;
and the transceiver is used for transmitting information according to the transmission related parameters of the terminal and the MCS level.
The processor is specifically configured to, when obtaining the MCS level used by the terminal: and acquiring the transmission related parameters currently used by the terminal, and acquiring the MCS level corresponding to the transmission related parameters currently used by the terminal through the mapping relation between the transmission related parameters and the MCS.
The method for obtaining the transmission related parameters currently used by the terminal comprises the following steps: and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
The processor is specifically configured to, when obtaining a transmission related parameter currently used by the terminal: and acquiring the MCS level currently used by the terminal, and acquiring the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter.
The method for acquiring the MCS level currently used by the terminal comprises the following steps: and obtaining the MCS level currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
Wherein the transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence.
The mapping relation between the symbol-level scrambling sequences and the MCS is one-to-one, the reference signals are one-to-one corresponding to the MCS, and the preamble sequences are one-to-one corresponding to the MCS.
Wherein the transmission related parameters include: in the case of a symbol-level scrambling sequence, the transceiver is specifically configured to: obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS; and scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level.
Wherein the symbol-level scrambling sequence is generated by at least two m-sequences or by at least two Gold sequences.
Wherein the symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
from the generator polynomial of the m-sequence:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
According to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An N-th term of the second m-sequence is represented, wherein N is 0.ltoreq.n.ltoreq.N-1, and N represents a natural number.
Wherein the symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
Wherein a plurality of terminals use the same identity to initialize a scrambling sequence used by the terminals.
Wherein the transmission related parameters include: upon reference signals, the transceiver is specifically configured to: and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
Wherein the transmission related parameters include: in the case of a preamble sequence, the transceiver is specifically configured to: and initiating random access by using the preamble sequence according to the MCS level.
The embodiment of the invention also provides a terminal, which comprises: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform a method as described above.
The scheme of the invention at least comprises the following beneficial effects:
according to the scheme, the MCS level currently used by the terminal is obtained; and carrying out information transmission according to the transmission related parameters of the terminal and the MCS level. Therefore, the terminal supporting the scheduling-free transmission or the random access can determine the MCS level currently used by the terminal and transmit the MCS level, and signaling overhead is saved.
Drawings
Fig. 1 is a flow chart of an information transmission method according to an embodiment of the invention;
fig. 2 is a schematic diagram of a terminal architecture according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides an information transmission method applied to a terminal supporting scheduling-free transmission or random access, the method including:
and step 12, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level.
The embodiment of the invention ensures that the terminal supporting the scheduling-free transmission or the random access can determine the MCS level currently used by the terminal and transmit the MCS level when the terminal is in a non-connection state or a connection state, thereby saving signaling overhead.
In the embodiment of the present invention, in the step 11, the obtaining the MCS level currently used by the terminal through the mapping relationship between the MCS level and the transmission related parameter includes:
step 111, acquiring a transmission related parameter currently used by a terminal, and acquiring an MCS level corresponding to the transmission related parameter currently used by the terminal through a mapping relation between the transmission related parameter and the MCS; the transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence; here, obtaining transmission related parameters currently used by the terminal includes: and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
In the embodiment of the present invention, in the step 11, the obtaining the transmission related parameters currently used by the terminal through the mapping relationship between the MCS level and the transmission related parameters includes:
step 112, obtaining the MCS level currently used by the terminal, and obtaining the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter. Here, the MCS level currently used by the terminal is obtained through at least one of broadcast signaling, radio resource control RRC signaling, and downlink control information DCI. The transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence.
In step 111 and step 112, the symbol-level scrambling sequences are in one-to-one correspondence with the MCSs. For example, for a certain terminal k, its pilots are x1, x2, x3, x4, and the pilots at its 2 nd and 4 th positions are scrambled with the nth scrambling sequence: sn (i) ×2, sn (i+1) ×4.
The symbol level scrambling sequence 1 corresponds to MCS1;
……
the symbol-level scrambling sequence N corresponds to MCSN;
the specific mapping manner can be customized, so long as one-to-one mapping is satisfied.
The reference signals are in one-to-one correspondence with the MCS;
the preamble sequence corresponds to the MCS one by one.
When the terminal is RRC-inactive/idle, the initial MCS level needs to be configured through broadcast signaling, for example: SIB signaling, wherein the initial MCS may be obtained by a priori information or by measurement of the synchronization signal;
the RRC-connected state, the initial MCS level may be configured by RRC signaling or DCI signaling, may be obtained by measuring a reference signal and looking up a link-to-system interface mapping curve.
In the embodiment of the present invention, in the step 12, the transmission related parameters include: and when the symbol-level scrambling sequence is carried out, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps:
step 121, obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS;
step 122, scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level; scrambling a portion of the reference signal may reduce the complexity of blind detection of the scrambling sequence.
In an embodiment of the present invention, the symbol-level scrambling sequence generates a symbol-level complex pseudo-random sequence (scrambling sequence) by some operation of a real pseudo-random sequence, and in particular, may be generated by at least two m-sequences or by at least two Gold sequences.
Wherein the symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
step A1), generating polynomials according to m sequences:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
Step A2) according to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An N-th term of the second m-sequence is represented, wherein N is 0.ltoreq.n.ltoreq.N-1, and N represents a natural number.
Wherein the symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
In the embodiment of the invention, different terminals are allowed to initialize the scrambling sequence by using the same identifier, namely a plurality of terminals initialize the scrambling sequence used by the terminals by using the same identifier. For example: in a certain terminal set {1,2, … }, the symbol-level scramblers used by the terminals {1,3,5} are initialized with one MCS-C-RNTI. The initial value MCS-C-RNTI is configured through RRC signaling dataScadamblingIdentityPUSCH.
In the embodiment of the present invention, in the step 12, the transmission related parameters include: and when the reference signal is transmitted, information transmission is carried out according to the transmission related parameters of the terminal and the MCS level, and the method comprises the following steps: and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
In the embodiment of the present invention, in the step 12, the transmission related parameters include: and in the preamble sequence, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps: and initiating random access by using the preamble sequence according to the MCS level.
The embodiment of the invention allows the user to perform the link adaptation under the scheduling-free transmission or random access to a certain extent without the reconfiguration of the signaling, thereby saving the signaling overhead.
As shown in fig. 2, an embodiment of the present invention further provides a terminal 20, including:
a processor 22, configured to obtain, through a mapping relationship between an MCS level and a transmission related parameter in a coding modulation mode, an MCS level or a transmission related parameter used by the terminal;
and the transceiver 21 is used for transmitting information according to the transmission related parameters of the terminal and the MCS level.
The processor 22 is specifically configured to, when obtaining the MCS level currently used by the terminal: acquiring a transmission related parameter currently used by a terminal, and acquiring an MCS level corresponding to the transmission related parameter currently used by the terminal through a mapping relation between the transmission related parameter and the MCS; here, obtaining transmission related parameters currently used by the terminal includes: and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
The processor 22 is specifically configured to, when obtaining the transmission related parameters currently used by the terminal: and acquiring the MCS level currently used by the terminal, and acquiring the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter. Here, obtaining the MCS level currently used by the terminal includes: and obtaining the MCS level currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
The transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence.
The mapping relation between the symbol-level scrambling sequences and the MCS is one-to-one, the reference signals are one-to-one corresponding to the MCS, and the preamble sequences are one-to-one corresponding to the MCS.
The transmission related parameters include: in the case of a symbol-level scrambling sequence, the transceiver 21 is specifically configured to: obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS; and scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level.
The symbol-level scrambling sequence is generated by at least two m-sequences or by at least two Gold sequences.
The symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
from the generator polynomial of the m-sequence:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
According to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An nth item representing a second m-sequence, wherein,
n is more than or equal to 0 and less than or equal to N-1, wherein N represents a natural number.
The symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
And initializing the scrambling sequence used by the terminal by using the same identifier by a plurality of terminals.
The transmission related parameters include: the transceiver 21 is specifically configured to, when referring to a signal: and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
The transmission related parameters include: in the case of a preamble sequence, the transceiver 21 is specifically configured to: and initiating random access by using the preamble sequence according to the MCS level.
It should be noted that, the terminal is a terminal corresponding to the method shown in fig. 1, and all implementation manners in the method embodiment are applicable to the embodiment of the terminal, so that the same technical effects can be achieved. The terminal may further include: the memory 23, the transceiver 21 and the processor 22, and the transceiver 21 and the memory 23 may be connected through a bus interface, the functions of the transceiver 21 may be implemented by the processor 22, and the functions of the processor 22 may be implemented by the transceiver 21.
The embodiment of the invention also provides a terminal, which comprises: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above with reference to fig. 1. All the implementation manners in the embodiment of the method are applicable to the embodiment of the terminal, and the same technical effects can be achieved.
Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform a method as described above. All the implementation manners in the embodiment of the method are applicable to the embodiment of the terminal, and the same technical effects can be achieved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.
The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (26)
1. An information transmission method, applied to a terminal supporting scheduling-free transmission or initiating random access, comprising:
obtaining the MCS level or the transmission related parameter used by the terminal through the mapping relation between the MCS level and the transmission related parameter of the coding modulation mode;
information transmission is carried out according to the transmission related parameters of the terminal and the MCS level;
the transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence;
the transmission related parameters include: and when the symbol-level scrambling sequence is carried out, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps:
obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS;
and scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level.
2. The information transmission method according to claim 1, wherein obtaining the MCS level used by the terminal through a mapping relationship between a coded modulation scheme MCS level and a transmission related parameter, comprises:
and acquiring the transmission related parameters currently used by the terminal, and acquiring the MCS level corresponding to the transmission related parameters currently used by the terminal through the mapping relation between the transmission related parameters and the MCS.
3. The information transmission method according to claim 2, wherein obtaining transmission-related parameters currently used by the terminal includes:
and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
4. The information transmission method according to claim 1, wherein obtaining the transmission related parameters currently used by the terminal through a mapping relationship between an MCS level and the transmission related parameters, comprises:
and acquiring the MCS level currently used by the terminal, and acquiring the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter.
5. The information transmission method of claim 4, wherein obtaining the MCS level currently used by the terminal comprises:
and obtaining the MCS level currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
6. The information transmission method of claim 1, wherein the symbol-level scrambling sequences are in one-to-one correspondence with the MCSs, the reference signals are in one-to-one correspondence with the MCSs, and the preamble sequences are in one-to-one correspondence with the MCSs.
7. The information transmission method according to claim 1, wherein the symbol-level scrambling sequence is generated by at least two m-sequences or by at least two Gold sequences.
8. The information transmission method according to claim 1, wherein the symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
from the generator polynomial of the m-sequence:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
According to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An N-th term of the second m-sequence is represented, wherein N is 0.ltoreq.n.ltoreq.N-1, and N represents a natural number.
9. The information transmission method according to claim 1, wherein the symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
10. The information transmission method according to claim 7, wherein a plurality of terminals initialize scrambling sequences used by the terminals using the same identification.
11. The information transmission method according to claim 1, wherein the transmission-related parameters include: and when the reference signal is transmitted, information transmission is carried out according to the transmission related parameters of the terminal and the MCS level, and the method comprises the following steps:
and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
12. The information transmission method according to claim 1, wherein the transmission-related parameters include: and in the preamble sequence, carrying out information transmission according to the transmission related parameters of the terminal and the MCS level, wherein the method comprises the following steps:
and initiating random access by using the preamble sequence according to the MCS level.
13. A terminal, comprising:
the processor is used for obtaining the MCS level or the transmission related parameter used by the terminal through the mapping relation between the MCS level and the transmission related parameter of the coding modulation mode;
the transceiver is used for transmitting information according to the transmission related parameters of the terminal and the MCS level;
the transmission related parameters include: at least one of a symbol-level scrambling sequence, a reference signal, and a preamble sequence;
the transmission related parameters include: in the case of a symbol-level scrambling sequence, the transceiver is specifically configured to: obtaining a scrambling sequence corresponding to the MCS level currently used by the terminal through the mapping relation between the symbol level scrambling sequence and the MCS; and scrambling the data and/or at least part of the reference signals transmitted by the terminal by using the scrambling sequence, and transmitting according to the MCS level.
14. The terminal according to claim 13, wherein the processor is configured to, when obtaining the MCS level used by the terminal: acquiring a transmission related parameter currently used by a terminal, and acquiring an MCS level corresponding to the transmission related parameter used by the terminal through a mapping relation between the transmission related parameter and the MCS.
15. The terminal according to claim 14, wherein obtaining transmission related parameters currently used by the terminal comprises: and obtaining the transmission related parameters currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
16. The terminal according to claim 13, wherein the processor is configured to, when obtaining the transmission related parameters currently used by the terminal: and acquiring the MCS level currently used by the terminal, and acquiring the transmission related parameter corresponding to the MCS level currently used by the terminal through the mapping relation between the MCS level and the transmission related parameter.
17. The terminal of claim 16, wherein obtaining the MCS level currently used by the terminal comprises: and obtaining the MCS level currently used by the terminal through at least one of broadcast signaling, radio Resource Control (RRC) signaling and Downlink Control Information (DCI).
18. The terminal of claim 13, wherein the symbol-level scrambling sequence is one-to-one with the MCS, wherein the reference signal is one-to-one with the MCS, and wherein the preamble sequence is one-to-one with the MCS.
19. The terminal of claim 13, wherein the symbol-level scrambling sequence is generated by at least two m-sequences or by at least two Gold sequences.
20. The terminal of claim 13, wherein the symbol-level scrambling sequence is generated by at least two m-sequences, comprising:
from the generator polynomial of the m-sequence:
obtaining m sequence m I (i) And generating polynomials according to the m-sequences: />
Obtaining m sequence m Q (i)；
According to said m I (i) And m Q (i) Obtaining the symbol-level scrambling sequence:
wherein the symbol-level scrambling sequence S c (i) For complex number, j is complex number unit, i takes on the value {0, …, n };
n-th item representing the first m-sequence, < ->
An N-th term of the second m-sequence is represented, wherein N is 0.ltoreq.n.ltoreq.N-1, and N represents a natural number.
21. The terminal of claim 13, wherein the symbol-level scrambling sequence is generated by at least two Gold sequences, comprising:
by passing through
A symbol-level scrambling sequence is obtained and,
wherein the real-valued scrambling code sequence c 1,n And c 2,n The method comprises the following steps of:
c 1,n (i)＝Zn(i),i＝0,1,2,…,2 25 -2；
c 2,n (i)＝Zn((i+16777232)modulo(2 25 -1))，i＝0,1,2,…,2 25 -2；
the real Gold sequence Zn is:
the symbol-level scrambling sequence S n (i) And j is a complex number unit.
22. The terminal of claim 13, wherein a scrambling sequence used by the terminal is initialized by a plurality of terminals using the same identity.
23. The terminal of claim 13, wherein the transmission related parameters include: upon reference signals, the transceiver is specifically configured to: and transmitting the reference signal and the data transmitted by the terminal together according to the MCS level.
24. The terminal of claim 13, wherein the transmission related parameters include: in the case of a preamble sequence, the transceiver is specifically configured to: and initiating random access by using the preamble sequence according to the MCS level.
25. A terminal, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any one of claims 1 to 12.
26. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 12.
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| CN107666364A (en) * | 2016-07-27 | 2018-02-06 | 北京三星通信技术研究有限公司 | Selection and method, corresponding terminal device, the base station equipment for determining modulation coding mode |
| CN108243457A (en) * | 2016-12-26 | 2018-07-03 | 华为技术有限公司 | Exempt from the method, terminal and the network equipment of authorized transmissions |
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