CN111436141A - Information transmission and receiving method, terminal and network side equipment - Google Patents
Information transmission and receiving method, terminal and network side equipment Download PDFInfo
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- CN111436141A CN111436141A CN201910229259.6A CN201910229259A CN111436141A CN 111436141 A CN111436141 A CN 111436141A CN 201910229259 A CN201910229259 A CN 201910229259A CN 111436141 A CN111436141 A CN 111436141A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/325—Power control of control or pilot channels
Abstract
The invention provides an information transmission and receiving method, a terminal and network side equipment, and relates to the technical field of communication. The information transmission method is applied to a terminal and comprises the following steps: receiving downlink control information sent by network side equipment, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by a terminal; and transmitting information on the PRACH transmission resource according to the limited parameters. According to the scheme, the downlink control information which is sent by the network side equipment and contains the PRACH transmission resource and the limiting parameter of the PRACH transmission resource used by the terminal is received, so that the information can be flexibly transmitted on the PRACH transmission resource according to the limiting parameter, and the PRACH transmission can be flexibly performed by the terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information transmission method, an information reception method, a terminal, and a network device.
Background
In an unlicensed frequency band of a New Radio (NR), before information is transmitted, a terminal or a network side device needs to perform Channel idle estimation (CCA)/extended Channel idle estimation (eCCA) to listen to a Channel, that is, perform Energy Detection (ED), and when Energy is lower than a certain threshold, the Channel is determined to be empty, and transmission may start, that is, listen before talk (L BT).
When a terminal needs to transmit a Physical Random Access Channel (PRACH), the terminal may perform CCA to determine that the Channel is empty.
In another way, after the network obtains the channel through the CCA, the obtained channel may be shared to the terminal, and the terminal uses the channel resource obtained by the network for transmission. The network may transmit Downlink Control Information (DCI) through a Physical Downlink Control CHannel (PDCCH) to indicate transmission resources that the terminal may use for PRACH transmission. Whether the terminal transmits depends on whether the terminal actually has the transmission requirement of the PRACH.
Disclosure of Invention
The embodiment of the invention provides an information transmission and reception method, a terminal and network side equipment, and aims to solve the problem that the conventional DCI only indicates PRACH transmission resources and cannot ensure that the terminal flexibly transmits the PRACH.
In order to solve the technical problem, the invention is realized by adopting the following modes:
in a first aspect, an embodiment of the present invention provides an information transmission method, applied to a terminal, including:
receiving downlink control information sent by network side equipment, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by a terminal;
and transmitting information on the PRACH transmission resource according to the limited parameters.
In a second aspect, an embodiment of the present invention provides an information receiving method, applied to a network side device, including:
sending downlink control information to a terminal, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by the terminal;
and receiving the information transmitted by the terminal on the PRACH transmission resource.
In a third aspect, an embodiment of the present invention provides a terminal, including:
the first receiving module is used for receiving downlink control information sent by network side equipment, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by a terminal;
and the transmission module is used for transmitting information on the PRACH transmission resource according to the limited parameters.
In a fourth aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the information transmission method described above.
In a fifth aspect, an embodiment of the present invention provides a network side device, including:
a sending module, configured to send downlink control information to a terminal, where the downlink control information indicates PRACH transmission resources of a physical random access channel and a limiting parameter for using the PRACH transmission resources by the terminal;
and the second receiving module is used for receiving the information transmitted by the terminal on the PRACH transmission resource.
In a sixth aspect, an embodiment of the present invention provides a network side device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the above-mentioned information receiving method.
In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores thereon a computer program, and the computer program, when executed by a processor, implements the steps of the above-mentioned information transmission method or the steps of the above-mentioned information reception method.
The invention has the beneficial effects that:
according to the scheme, the downlink control information which is sent by the network side equipment and contains the PRACH transmission resource and the limiting parameter of the PRACH transmission resource used by the terminal is received, so that the information can be flexibly transmitted on the PRACH transmission resource according to the limiting parameter, and the PRACH transmission can be flexibly performed by the terminal.
Drawings
Fig. 1 is a schematic flow chart of an information transmission method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an information receiving method according to an embodiment of the present invention;
fig. 3 shows a block diagram of a terminal according to an embodiment of the invention;
fig. 4 shows a block diagram of a terminal according to an embodiment of the present invention;
fig. 5 is a block diagram of a network device according to an embodiment of the present invention;
fig. 6 is a block diagram showing a configuration of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In making the description of the embodiments of the present invention, some concepts used in the following description will first be explained.
Since the unlicensed frequency band is shared by multiple technologies or multiple transmission nodes, the contention-based access method causes uncertainty of available time of a CHannel, and when the CHannel is available (available), a transmittable location of signal transmission on a network side may have been missed and cannot be transmitted, which may cause a receiving end to be unable to normally receive signal reception configured on the network side, and a terminal behavior performed according to configuration on the network side after the signal reception, such as Physical Downlink Control CHannel (PDCCH) monitoring, monitoring and measuring of a wireless environment, and the like.
The invention provides an information transmission and reception method, a terminal and network side equipment, aiming at the problem that the existing DCI only indicates PRACH transmission resources and cannot ensure that a terminal flexibly transmits PRACH.
As shown in fig. 1, an embodiment of the present invention provides an information transmission method, which is applied to a terminal, and includes:
step 101, receiving downlink control information sent by a network side device;
it should be noted that the downlink control information indicates Physical Random Access Channel (PRACH) transmission resources and a limitation parameter for using the PRACH transmission resources by the terminal.
And 102, transmitting information on the PRACH transmission resource according to the limited parameters.
It should be noted that the downlink control information indicates PRACH transmission resources capable of performing PRACH transmission, where the PRACH transmission resources are Resource Block (RB) information, and specifically, the PRACH transmission resources may be continuous RBs or discontinuous RBs, and a terminal does not necessarily perform PRACH transmission on the PRACH transmission resources; if the terminal has the requirement of PRACH transmission, the terminal needs to transmit according to the limited parameters.
It is further noted that the defining parameters include at least one of the following information:
a11, PRACH format information that the PRACH transmission resource supports transmission;
for example, if the network indicates through higher layer signaling that the terminal may support transmission of more than one PRACH format in the current cell. When the network obtains transmission resources through CCA, partial channel resources are indicated as being used for PRACH transmission through DCI indication, and PRACH format information which can be transmitted by the resources is indicated at the same time.
Specifically, the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
For example, when the PRACH format information includes only the cyclic prefix length of PRACH transmission, and when the terminal has a PRACH transmission requirement, performing PRACH transmission on the PRACH transmission resource according to the cyclic prefix length of PRACH transmission specified in the PRACH format information; for example, when the PRACH format information includes only the sequence length of PRACH transmission, and when the terminal has a PRACH transmission requirement, performing PRACH transmission on the PRACH transmission resource according to the sequence length of PRACH transmission specified in the PRACH format information; for example, when the PRACH format information includes only the sequence repetition number, and when the terminal has a PRACH transmission requirement, performing PRACH transmission on the PRACH transmission resource according to the sequence repetition number specified in the PRACH format information; for example, when the PRACH format information includes a cyclic prefix length of PRACH transmission and a sequence length of PRACH transmission, and when the terminal has a PRACH transmission requirement, performing PRACH transmission on the PRACH transmission resource according to the cyclic prefix length of PRACH transmission and the sequence length of PRACH transmission specified in the PRACH format information; for example, when the PRACH format information includes a cyclic prefix length and a sequence repetition number of PRACH transmission, and when there is a PRACH transmission requirement at a terminal, performing PRACH transmission on the PRACH transmission resource according to the cyclic prefix length and the sequence repetition number of PRACH transmission specified in the PRACH format information; for example, when the PRACH format information includes the sequence length and the sequence repetition number of PRACH transmission, and when the terminal has a PRACH transmission requirement, performing PRACH transmission on the PRACH transmission resource according to the sequence length and the sequence repetition number of PRACH transmission specified in the PRACH format information; for example, when the PRACH format information includes a cyclic prefix length of PRACH transmission, a sequence length of PRACH transmission, and a sequence repetition number, and when the terminal has a PRACH transmission requirement, the PRACH transmission is performed on the PRACH transmission resource according to the cyclic prefix length of PRACH transmission, the sequence length of PRACH transmission, and the sequence repetition number specified in the PRACH format information.
A12, the type of random access corresponding to the PRACH transmission resource;
for example, if the network indicates, through higher layer signaling, that the terminal may support transmission of more than one PRACH procedures (i.e., support more than one type of random access) in the current cell, the network may indicate, through the DCI, that the PRACH transmission resources are specifically for transmission of which type of random access.
It should be noted that the types of the random access include: at least one of non-contention random access, two-step contention random access, and four-step contention random access.
For example, when the type of random access includes only non-contention random access, the terminal performs PRACH transmission of non-contention random access on the PRACH transmission resource only when the terminal has a transmission requirement of non-contention random access; for example, when the type of random access includes only two-step contention random access, the terminal performs PRACH transmission on the PRACH transmission resource for two-step contention random access only when the terminal has a transmission requirement for two-step contention random access; for example, when the type of random access includes only four-step contention random access, the terminal performs PRACH transmission of four-step contention random access on the PRACH transmission resource only when the terminal has a transmission requirement of the four-step contention random access; for example, when the type of random access includes non-contention random access and two-step contention random access, the terminal performs PRACH transmission for the non-contention random access or PRACH transmission for the two-step contention random access on the PRACH transmission resource only when the terminal has a transmission requirement for the non-contention random access or the two-step contention random access; for example, when the type of random access includes non-contention random access and four-step contention random access, the terminal performs PRACH transmission for non-contention random access or PRACH transmission for four-step contention random access on the PRACH transmission resource only when the terminal has a transmission requirement for the non-contention random access or the four-step contention random access; for example, when the type of random access includes two-step contention random access and four-step contention random access, the terminal performs PRACH transmission for the two-step contention random access or PRACH transmission for the four-step contention random access on the PRACH transmission resource only when the terminal has a transmission requirement for the two-step contention random access or the four-step contention random access; for example, when the type of random access includes non-contention random access, two-step contention random access, and four-step contention random access, the terminal performs PRACH transmission for non-contention random access, two-step contention random access, or four-step contention random access on the PRACH transmission resource only when the terminal has a transmission requirement for the non-contention random access, the two-step contention random access, or the four-step contention random access.
It should be further noted that, in this case, optionally, the defining parameters further include:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
In this case, optionally, when the type of random access includes two-step contention random access, the defining the parameter further includes: resource allocation information for Physical Uplink Shared Channel (PUSCH) transmission; note that the resource allocation information includes: PUSCH transmits occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols and Resource Block (RB) information.
A13, the position information of the PRACH transmission resource;
it should be noted that the location information includes: a subband, a subband combination, a carrier combination, a bandwidth part (BWP), or a bandwidth part combination;
for example, if the current network supports transmission of multiple uplink carriers, subbands, and BWPs, the network may indicate the carrier, subband, or BWP where the PRACH transmission resource is located through DCI, where the number of the carriers, subbands, or BWPs may be greater than 1, that is, indicate a set of resources that can be used for transmission, that is, a carrier combination, a subband combination, or a BWP combination. It should be noted that the carrier, subband, or BWP where the PRACH transmission resource indicated by the DCI is located may be the same as or different from the carrier, subband, or BWP where the DCI is transmitted.
For example, when the location information includes a subband, when the terminal has a PRACH transmission requirement, performing PRACH transmission on the subband indicated by the location information, or, when the location information includes a subband combination, when the terminal has a PRACH transmission requirement, performing PRACH transmission on one subband in the subband combination indicated by the location information; for example, when the location information includes a carrier, when the terminal has a PRACH transmission requirement, performing PRACH transmission on the carrier indicated by the location information, or, when the location information includes a carrier combination, when the terminal has a PRACH transmission requirement, performing PRACH transmission on one carrier in the carrier combination indicated by the location information; for example, when the position information includes a bandwidth portion, when the terminal has a PRACH transmission requirement, PRACH transmission is performed on the bandwidth portion indicated by the position information, or when the position information includes a bandwidth portion, when the terminal has a PRACH transmission requirement, PRACH transmission is performed on one bandwidth portion of a combination of bandwidth portions indicated by the position information.
A14, information of reference signals associated with the PRACH transmission resources;
it should be noted that the reference signal includes: a Synchronization Signal Block (SSB), a set of SSBs, a channel state information reference signal (CSI-RS) resource, or a set of CSI-RS resources.
For example, when the resource information includes: in SSB (or set of SSBs), when the terminal has a PRACH transmission requirement, if the SSB associated with the PRACH transmission performed by the terminal is the SSB (or one of the set of SSBs) specified in the resource information, the terminal performs PRACH transmission on the PRACH transmission resource; when the resource information includes: when a terminal has a PRACH transmission requirement, if the CSI-RS resource associated with the PRACH transmission by the terminal is the CSI-RS resource (or one of the set of CSI-RS resources) specified in the resource information, the terminal performs the PRACH transmission on the PRACH transmission resource.
Information of a15, preamble or set of preambles;
it should be noted that, the information of the preamble or the preamble set refers to the preambles or the preamble sets that can be transmitted on the PRACH transmission resource; for example, when the defined parameter includes a preamble that can be transmitted on the PRACH transmission resource, the preamble used by the terminal for PRACH transmission must be one of the preambles specified by the defined parameter or a set of preambles belonging to the defined parameter; for example, when the restricted parameter includes a set of preambles that can be transmitted on the PRACH transmission resource (the set of preambles indicates that there are multiple preambles), the preamble used by the terminal for PRACH transmission should be one of the set of preambles specified by the restricted parameter.
A16, the power of the PRACH transmission resource transmission PRACH or the maximum power indication of the transmission PRACH;
it should be noted that the maximum power indication refers to the maximum transmission power that can be used for PRACH transmission, i.e., the PRACH transmission cannot be performed beyond the maximum transmission power.
For example, when the defined parameter includes the power of the PRACH transmission resource for transmitting the PRACH, and when the terminal has a PRACH transmission requirement, the PRACH transmission is performed using the power specified in the defined parameter, where the specified power may be an increase of the transmission power; for example, when the defined parameter includes a maximum power indication of the PRACH transmission resource, when the terminal has a PRACH transmission requirement, the PRACH transmission is performed using a power less than or equal to the maximum power indication specified in the defined parameter.
It should be noted that, since the limitation parameter includes any one or a combination of a11-a16, the terminal only needs to perform PRACH transmission that meets the requirements according to the specific instruction content of the limitation parameter.
It should be further noted that, the target resource of the PRACH transmission resource is not used for performing the first transmission except for the PRACH transmission;
specifically, the target resource includes at least one of a frequency domain resource and a time domain resource.
It should be noted that the non-use of the first transmission except for the PRACH transmission means that the terminal performs the PRACH transmission on the target resource of the PRACH transmission resource, regardless of whether performing the PRACH transmission or not, the target resource of the PRACH transmission resource is not used for performing the first transmission, that is, the target resource of the PRACH transmission resource is used as a reserved resource, and when there is a transmission requirement of the PRACH, the target resource of the PRACH transmission resource is used for performing the PRACH transmission; when there is no transmission requirement of the PRACH, the terminal does not perform any transmission on the target resource of the PRACH transmission resource, which can avoid the terminal from causing interference to other terminals that need to use the PRACH transmission resource.
Further, the time domain resource includes: the OFDM symbol where the transmission opportunity is located.
Optionally, the time domain resource includes: in the case of the OFDM symbol where the transmission opportunity is located, the time domain resource may further include:
a first preset number of OFDM symbols before the OFDM symbol of the transmission opportunity and a second preset number of OFDM symbols after the OFDM symbol of the transmission opportunity;
the first preset number is greater than or equal to 1, and the second preset number is greater than or equal to 1.
Specifically, the first transmission includes: at least one of uplink transmission and downlink reception other than the PRACH transmission.
Further, the uplink transmission comprises at least one of:
b11, Physical Uplink Shared Channel (PUSCH) transmission;
b12, Physical Uplink Control Channel (PUCCH) transmission;
b13, uplink sounding signal (SRS) transmission.
It should be further noted that the triggering manner of the uplink transmission includes at least one of the following manners:
c11, high-layer signaling configuration or scheduling mode;
for example, the uplink transmission includes a higher layer signaling configuration or scheduled PUSCH transmission; or the uplink transmission comprises PUCCH transmission configured or scheduled by high-level signaling; or the uplink transmission comprises higher layer signaling configuration or scheduled SRS transmission.
C12, mode indicated by media access control element (MAC CE);
for example, the uplink transmission includes PUSCH transmission, PUCCH transmission, or SRS transmission indicated by the MAC CE.
C13, Downlink Control Information (DCI) indication mode;
for example, the uplink transmission includes a PUSCH transmission, a PUCCH transmission, or an SRS transmission indicated by the DCI.
Further, the downlink receiving comprises at least one of the following actions:
d11, receiving a Physical Downlink Control Channel (PDCCH);
d12, receiving a Physical Downlink Shared Channel (PDSCH);
d13, Synchronous Signal Block (SSB) receiving;
d14, receiving a channel state information reference signal (CSI-RS);
d15, measuring downwards;
it should be noted that the downlink measurement includes: at least one of a channel state measurement, a beam management measurement, a radio link monitoring measurement, and a radio resource management measurement.
For example, the network indicates, through the DCI, a part of resources for PRACH transmission, and the terminal configures, in the time and/or frequency resources, monitoring of the PDCCH, receiving of the PDSCH, or measuring resources by a higher layer signaling to perform downlink reception; or the terminal is configured by the high-level signaling to transmit the SRS, and transmit the PUSCH or PUCCH; the terminal cancels the behavior of the high-layer signaling configuration, namely the terminal does not execute the behavior of the high-layer signaling configuration.
It should be noted that, in the embodiment of the present invention, while the DCI indicates the PRACH transmission resources, the DCI indicates more terminals to use the limited parameters of the PRACH transmission resources, so that resources of the PRACH can be triggered more dynamically according to the requirements of the terminals, more PRACH transmission modes are indicated, and the terminals can perform PRACH transmission flexibly.
As shown in fig. 2, an embodiment of the present invention provides an information receiving method, applied to a network side device, including:
wherein, the downlink control information indicates Physical Random Access Channel (PRACH) transmission resources and a limiting parameter of the PRACH transmission resources used by the terminal;
step 202, receiving the information transmitted by the terminal on the PRACH transmission resource.
Specifically, the limiting parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
Further, the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
Further, the defining parameters include: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
Further, the defining parameters include: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
Specifically, the resource allocation information includes: the PUSCH transmits occupied Orthogonal Frequency Division Multiplexing (OFDM) symbols and resource block RB information.
Specifically, the limiting parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
It should be noted that all the descriptions regarding the network side device in the above embodiments are applicable to the embodiment of the information receiving method, and the same technical effects can be achieved.
As shown in fig. 3, an embodiment of the present invention provides a terminal 300, including:
a first receiving module 301, configured to receive downlink control information sent by a network side device, where the downlink control information indicates a PRACH transmission resource of a physical random access channel and a limiting parameter of the PRACH transmission resource used by a terminal;
a transmission module 302, configured to perform information transmission on the PRACH transmission resource according to the defined parameter.
Specifically, the limiting parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
Further, the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
Further, the defining parameters include: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
Further, the defining parameters include: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
Specifically, the resource allocation information includes: and transmitting the occupied orthogonal frequency division multiplexing OFDM symbol and resource block RB information by the PUSCH.
Specifically, the limiting parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
Optionally, the target resource of the PRACH transmission resources is not used for a first transmission other than the PRACH transmission;
wherein the target resource comprises at least one of a frequency domain resource and a time domain resource.
Specifically, the time domain resources include: the OFDM symbol where the transmission opportunity is located.
Further, the time domain resource further includes:
a first preset number of OFDM symbols before the OFDM symbol of the transmission opportunity and a second preset number of OFDM symbols after the OFDM symbol of the transmission opportunity;
the first preset number is greater than or equal to 1, and the second preset number is greater than or equal to 1.
Specifically, the first transmission includes: at least one of uplink transmission and downlink reception other than the PRACH transmission.
Further, the uplink transmission comprises at least one of:
physical Uplink Shared Channel (PUSCH) transmission;
transmitting a Physical Uplink Control Channel (PUCCH);
and transmitting an uplink sounding signal (SRS).
Further, the triggering mode of the uplink transmission includes at least one of the following modes:
a high-level signaling configuration or scheduling mode;
the mode indicated by the media access control unit;
and indicating the mode of the downlink control information.
Further, the downlink receiving comprises at least one of the following actions:
receiving a Physical Downlink Control Channel (PDCCH);
receiving a Physical Downlink Shared Channel (PDSCH);
receiving a synchronization signal block SSB;
receiving a channel state information reference signal (CSI-RS);
and (4) downlink measurement.
It should be noted that the terminal embodiment is a terminal corresponding to the information transmission method applied to the terminal, and all implementation manners of the above embodiments are applicable to the terminal embodiment, and the same technical effects as those of the terminal embodiment can also be achieved.
Fig. 4 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present invention.
The terminal 40 includes but is not limited to: radio frequency unit 410, network module 420, audio output unit 430, input unit 440, sensor 450, display unit 460, user input unit 470, interface unit 480, memory 490, processor 411, and power supply 412. Those skilled in the art will appreciate that the terminal configuration shown in fig. 4 is not intended to be limiting, and that the terminal may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The radio frequency unit 410 is configured to receive downlink control information sent by a network side device, where the downlink control information indicates a PRACH transmission resource of a physical random access channel and a limiting parameter of the PRACH transmission resource used by a terminal; and transmitting information on the PRACH transmission resource according to the limited parameters.
The terminal of the embodiment of the invention can flexibly transmit information in the PRACH transmission resource according to the limited parameter by receiving the downlink control information which is sent by the network side equipment and contains the PRACH transmission resource and the limited parameter of the PRACH transmission resource used by the terminal, thereby ensuring that the PRACH transmission can be flexibly performed by the terminal.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 410 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a network-side device and then processes the received downlink data to the processor 411; in addition, the uplink data is sent to the network side equipment. Generally, the radio frequency unit 410 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 410 may also communicate with a network and other devices through a wireless communication system.
The terminal provides the user with wireless broadband internet access through the network module 420, such as helping the user send and receive e-mails, browse web pages, and access streaming media.
The audio output unit 430 may convert audio data received by the radio frequency unit 410 or the network module 420 or stored in the memory 490 into an audio signal and output as sound. Also, the audio output unit 430 may also provide audio output related to a specific function performed by the terminal 40 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 430 includes a speaker, a buzzer, a receiver, and the like.
The input unit 440 is used to receive an audio or video signal. The input Unit 440 may include a Graphics Processing Unit (GPU) 441 and a microphone 442, and the Graphics processor 441 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 460. The image frames processed by the graphic processor 441 may be stored in the memory 490 (or other storage medium) or transmitted via the radio frequency unit 410 or the network module 420. The microphone 442 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication network side device via the radio frequency unit 410 in case of the phone call mode.
The terminal 40 also includes at least one sensor 450, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 461 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 461 and/or a backlight when the terminal 40 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 450 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The Display unit 460 may include a Display panel 461, and the Display panel 461 may be configured in the form of a liquid Crystal Display (L acquired Crystal Display, L CD), an Organic light-Emitting Diode (O L ED), or the like.
The user input unit 470 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 470 includes a touch panel 471 and other input devices 472. The touch panel 471, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 471 using a finger, a stylus, or any other suitable object or accessory). The touch panel 471 can include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 411, and receives and executes commands sent by the processor 411. In addition, the touch panel 471 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 470 may include other input devices 472 in addition to the touch panel 471. Specifically, the other input devices 472 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 471 can be overlaid on the display panel 461, and when the touch panel 471 detects a touch operation on or near the touch panel 471, the touch operation is transmitted to the processor 411 to determine the type of the touch event, and then the processor 411 provides a corresponding visual output on the display panel 461 according to the type of the touch event. Although the touch panel 471 and the display panel 461 are shown as two separate components in fig. 4, in some embodiments, the touch panel 471 and the display panel 461 may be integrated to implement the input and output functions of the terminal, and are not limited herein.
The interface unit 480 is an interface for connecting an external device to the terminal 40. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 480 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the terminal 40 or may be used to transmit data between the terminal 40 and external devices.
The memory 490 may be used to store software programs as well as various data. The memory 490 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, memory 490 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 411 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 490 and calling data stored in the memory 490, thereby performing overall monitoring of the terminal. Processor 411 may include one or more processing units; preferably, the processor 411 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 411.
The terminal 40 may further include a power supply 412 (such as a battery) for supplying power to various components, and preferably, the power supply 412 may be logically connected to the processor 411 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.
In addition, the terminal 40 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides a terminal, including a processor 411, a memory 490, and a computer program stored in the memory 490 and capable of running on the processor 411, where the computer program, when executed by the processor 411, implements each process of the information transmission method embodiment applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the information transmission method embodiment applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 5, an embodiment of the present invention further provides a network side device 500, including:
a sending module 501, configured to send downlink control information to a terminal, where the downlink control information indicates PRACH transmission resources of a physical random access channel and a limiting parameter for using the PRACH transmission resources by the terminal;
a second receiving module 502, configured to receive information transmitted by the terminal on the PRACH transmission resource.
Specifically, the limiting parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
Further, the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
Further, the defining parameters include: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
Further, the defining parameters include: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
Further, the resource allocation information includes: and transmitting the occupied orthogonal frequency division multiplexing OFDM symbol and resource block RB information by the PUSCH.
Specifically, the limiting parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
An embodiment of the present invention further provides a network side device, including: the information receiving method applied to the network side device comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein when the computer program is executed by the processor, each process in the information receiving method embodiment applied to the network side device is realized, the same technical effect can be achieved, and in order to avoid repetition, the details are not repeated.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process in the information receiving method embodiment applied to the network-side device, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Fig. 6 is a structural diagram of a network side device according to an embodiment of the present invention, which can implement details of the information receiving method described above and achieve the same effect. As shown in fig. 6, the network-side device 600 includes: a processor 601, a transceiver 602, a memory 603, and a bus interface, wherein:
the processor 601, configured to read the program in the memory 603, executes the following processes:
sending the downlink control information through the transceiver 602 to indicate the physical random access channel PRACH transmission resources and the restricted parameters of the PRACH transmission resources used by the terminal; and receiving the information transmitted by the terminal on the PRACH transmission resource.
In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
Specifically, the limiting parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
Further, the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
Further, the defining parameters include: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
Further, the defining parameters include: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
Specifically, the resource allocation information includes: and transmitting the occupied orthogonal frequency division multiplexing OFDM symbol and resource block RB information by the PUSCH.
Specifically, the limiting parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
The network side device may be a Base Transceiver Station (BTS) in Global System for mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in L TE, a relay Station or an Access point, or a Base Station in a future 5G network, and the like, which are not limited herein.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (30)
1. An information transmission method applied to a terminal is characterized by comprising the following steps:
receiving downlink control information sent by network side equipment, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by a terminal;
and transmitting information on the PRACH transmission resource according to the limited parameters.
2. The information transmission method according to claim 1, wherein the defined parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
3. The information transmission method according to claim 2, wherein the PRACH format information includes: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
4. The information transmission method according to claim 2, wherein the defining parameters include: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
5. The information transmission method according to claim 2, wherein the defining parameters include: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
6. The information transmission method according to claim 5, wherein the resource allocation information comprises: and transmitting the occupied orthogonal frequency division multiplexing OFDM symbol and resource block RB information by the PUSCH.
7. The information transmission method according to claim 1, wherein the defined parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
8. The method of claim 1, 2 or 7, wherein the target resource of the PRACH transmission resource is not used for the first transmission except the PRACH transmission;
wherein the target resource comprises at least one of a frequency domain resource and a time domain resource.
9. The information transmission method according to claim 8, wherein the time domain resource comprises: the OFDM symbol where the transmission opportunity is located.
10. The information transmission method according to claim 9, wherein the time domain resource further comprises:
a first preset number of OFDM symbols before the OFDM symbol of the transmission opportunity and a second preset number of OFDM symbols after the OFDM symbol of the transmission opportunity;
the first preset number is greater than or equal to 1, and the second preset number is greater than or equal to 1.
11. The information transmission method according to claim 8, wherein the first transmission comprises: at least one of uplink transmission and downlink reception other than the PRACH transmission.
12. The information transmission method according to claim 11, wherein the uplink transmission comprises at least one of the following transmissions:
physical Uplink Shared Channel (PUSCH) transmission;
transmitting a Physical Uplink Control Channel (PUCCH);
and transmitting an uplink sounding signal (SRS).
13. The information transmission method according to claim 11, wherein the triggering manner of the uplink transmission includes at least one of the following manners:
a high-level signaling configuration or scheduling mode;
the mode indicated by the media access control unit;
and indicating the mode of the downlink control information.
14. The information transmission method according to claim 11, wherein the downlink reception comprises at least one of the following actions:
receiving a Physical Downlink Control Channel (PDCCH);
receiving a Physical Downlink Shared Channel (PDSCH);
receiving a synchronization signal block SSB;
receiving a channel state information reference signal (CSI-RS);
and (4) downlink measurement.
15. An information receiving method is applied to a network side device, and is characterized by comprising the following steps:
sending downlink control information to a terminal, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by the terminal;
and receiving the information transmitted by the terminal on the PRACH transmission resource.
16. The information receiving method according to claim 15, wherein the defined parameter includes at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
17. The information receiving method of claim 16, wherein the PRACH format information comprises: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
18. The information receiving method according to claim 16, wherein the limiting parameter includes: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
19. The information receiving method according to claim 16, wherein the limiting parameter includes: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
20. The information receiving method as claimed in claim 19, wherein the resource allocation information comprises: and transmitting the occupied orthogonal frequency division multiplexing OFDM symbol and resource block RB information by the PUSCH.
21. The information receiving method according to claim 15, wherein the defined parameter includes at least one of the following information:
the location information of the PRACH transmission resource includes: a subband, a combination of subbands, a carrier, a combination of carriers, a bandwidth portion, or a combination of bandwidth portions;
information of reference signals associated with the PRACH transmission resources, the reference signals comprising: a synchronization signal block SSB, a set of SSBs, a channel state information reference signal, CSI-RS, resource or a set of CSI-RS resources;
a preamble or a set of preambles.
22. A terminal, comprising:
the first receiving module is used for receiving downlink control information sent by network side equipment, wherein the downlink control information indicates PRACH transmission resources of a physical random access channel and limited parameters of the PRACH transmission resources used by a terminal;
and the transmission module is used for transmitting information on the PRACH transmission resource according to the limited parameters.
23. The terminal of claim 22, wherein the defined parameter comprises at least one of the following information:
the PRACH transmission resource supports the transmitted PRACH format information;
the type of random access corresponding to the PRACH transmission resource;
the PRACH transmission resource transmits the power of the PRACH or transmits the maximum power indication of the PRACH.
24. The terminal of claim 23, wherein the PRACH format information comprises: at least one of a cyclic prefix length of the PRACH transmission, a sequence length of the PRACH transmission, and a number of sequence repetitions.
25. The terminal of claim 23, wherein the defining parameters comprises: when the type of random access is, the defining parameters further includes:
resource indication information indicating at least one of time domain resources and frequency domain resources of a transmission preamble.
26. The terminal of claim 23, wherein the defining parameters comprises: when the type of the random access is a contention two-step random access, the defining the parameters further includes: and resource allocation information transmitted by a Physical Uplink Shared Channel (PUSCH).
27. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the information transmission method according to one of claims 1 to 14.
28. A network-side device, comprising:
a sending module, configured to send downlink control information to a terminal, where the downlink control information indicates PRACH transmission resources of a physical random access channel and a limiting parameter for using the PRACH transmission resources by the terminal;
and the second receiving module is used for receiving the information transmitted by the terminal on the PRACH transmission resource.
29. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the information receiving method according to any one of claims 15 to 21.
30. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the information transmission method according to one of claims 1 to 14 or the steps of the information reception method according to one of claims 15 to 21.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229259.6A CN111436141A (en) | 2019-03-25 | 2019-03-25 | Information transmission and receiving method, terminal and network side equipment |
| PCT/CN2020/080189 WO2020192547A1 (en) | 2019-03-25 | 2020-03-19 | Information transmission and reception method, terminal and network side device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910229259.6A CN111436141A (en) | 2019-03-25 | 2019-03-25 | Information transmission and receiving method, terminal and network side equipment |
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| CN113170471A (en) * | 2021-03-08 | 2021-07-23 | 北京小米移动软件有限公司 | Transmission waveform parameter determination method, device and storage medium |
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| CN114531355B (en) * | 2020-11-23 | 2023-07-18 | 维沃移动通信有限公司 | Communication method, device and communication equipment |
| CN114598986B (en) * | 2020-12-04 | 2023-05-26 | 维沃移动通信有限公司 | Positioning method, device and terminal on sidelink SL |
| CN116437454A (en) * | 2021-12-31 | 2023-07-14 | 中国移动通信有限公司研究院 | Transmission method, apparatus, device, and readable storage medium |
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Application publication date: 20200721 |