CN116938307A - Signal transmission method, signal transmission device, communication equipment and readable storage medium - Google Patents
Signal transmission method, signal transmission device, communication equipment and readable storage medium Download PDFInfo
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Abstract
The application discloses a signal sending method, a device, communication equipment and a readable storage medium, which belong to the technical field of communication, and the signal sending method of the embodiment of the application comprises the following steps: the forwarding node determines a first transmission parameter of a first signal, wherein the first signal is a signal received by the forwarding node from a base station; determining a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node; and transmitting the second signal according to the second transmission parameter.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a signal sending method, a signal sending device, communication equipment and a readable storage medium.
Background
In the prior art, in order to extend the coverage of a cell, a forwarding node, such as a network control amplifier (Network Controlled Repeater, NCR) node, may be introduced to receive and amplify a downlink signal from an upstream base station, such that the signal strength to a terminal is increased, and to amplify an uplink signal from a terminal, such that the strength of the uplink signal from the terminal to the upstream base station is increased. The forwarding node may also generate multiple broadcast signal beams by itself, according to the configuration of the base station, to provide sufficient coverage through multiple beams. However, it is not yet determined how a forwarding node transmits a self-generated signal.
Disclosure of Invention
The embodiment of the application provides a signal sending method, a signal sending device, communication equipment and a readable storage medium, which can solve the problem of how a forwarding node sends a self-generated signal.
In a first aspect, a signal transmission method is provided, including:
the forwarding node determines a first transmission parameter of a first signal, wherein the first signal is a signal received by the forwarding node from a base station;
the forwarding node determines a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node;
and the forwarding node transmits the second signal according to the second transmission parameter.
In a second aspect, there is provided a signal transmission apparatus applied to a forwarding node, comprising:
the first determining module is used for determining a first transmission parameter of a first signal, wherein the first signal is a signal received by the forwarding node from a base station;
the second determining module is used for determining a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node;
and the sending module is used for sending the second signal according to the second transmission parameter.
In a third aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a fourth aspect, a communication device is provided, including a processor and a communication interface, where the processor is configured to determine a first transmission parameter of a first signal, where the first signal is a signal received by the forwarding node from a base station; determining a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node; the communication interface is configured to send the second signal according to the second transmission parameter.
In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.
In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.
In a seventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.
In the embodiment of the application, after determining the first transmission parameter of the first signal, the forwarding node may determine the second transmission parameter of the second signal according to the first transmission parameter, and send the second signal according to the second transmission parameter, where the first signal is a signal received by the forwarding node from the base station, and the second signal is a signal generated by the forwarding node. Thus, the forwarding node can transmit the self-generated signal. Further, determining the second transmission parameter of the second signal by means of the first transmission parameter of the first signal may enable the signal generated by the forwarding node to substantially coincide with the radio propagation characteristics of the signal received from the base station, thereby facilitating the determination of the uplink transmission timing, propagation path loss, etc. by the terminal based on the signal generated by the forwarding node, such as SSB/CSI-RS, etc.
Drawings
Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;
FIG. 2 is a schematic diagram of a network structure including NCR nodes in an embodiment of the application;
FIG. 3A is one of the forward signaling diagrams of an NCR node in an embodiment of the application;
FIG. 3B is a second exemplary embodiment of a forward signaling diagram of an NCR node in accordance with the present application;
FIG. 3C is a third exemplary diagram of the forward signaling of an NCR node in accordance with an embodiment of the present application;
FIG. 4 is a schematic diagram of spontaneous signaling by an NCR node in an embodiment of the application;
fig. 5 is a flowchart of a signal transmission method according to an embodiment of the present application;
fig. 6 is a schematic diagram of multipath reception of a broadcast signal beam in an embodiment of the present application;
FIG. 7A is a schematic diagram of time multiplexing of a first signal and a second signal in an embodiment of the application;
FIG. 7B is a schematic diagram of frequency division multiplexing of a first signal and a second signal according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a signal transmitting apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a network side device according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
It should be noted that the techniques described in the embodiments of the present application are not limited toThe long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) system may also be used for other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) th Generation, 6G) communication system.
Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in the NR system is described as an example, and the specific type of the base station is not limited.
In order to facilitate understanding of the embodiments of the present application, the following problems are first described.
In embodiments of the present application, forwarding nodes may include, but are not limited to, network control amplifier (Network Controlled Repeater, NCR) nodes, and the like.
The NCR node is also called a smart repeater (smart repeater). The NCR node is configured to extend the coverage of a cell, and includes receiving and amplifying a downlink signal from an upstream base station such that the signal strength to a terminal is increased, and amplifying an uplink signal from the terminal such that the strength of the uplink signal from the terminal to the upstream base station is increased.
The NCR node may receive control from an upstream base station, i.e., the base station may control transmission parameters of the NCR node, such as switching and transmission beams of the NCR node, etc., to improve the operating efficiency of the NCR node and reduce interference. In the network structure shown in fig. 2, which includes 3 network nodes, the intermediate network node is an NCR node that includes a mobile terminal (Mobile Termination, MT) Unit and a Relay Unit (RU), but does not include only one of the MT and RU. Wherein, the MT can establish connection with an upstream base station, and the base station can instruct the transmission/reception related parameters of MT/RU of the NCR node through the interaction control signaling of the MT and the NCR node.
For coverage of the NCR node, the NCR node needs to transmit a broadcast beam indicating a cell, such as a synchronization Signal block (Synchronization Signal and PBCH block, SSB) and/or a channel state information Reference Signal (CSI-RS), and the terminal can access the cell through the NCR node after the cell is discovered through monitoring the discovery Signal. The NCR node is transparent to the terminal, i.e. the terminal does not need to know whether to forward access cells or direct access cells through the NCR node.
When the NCR node transmits the broadcast beam to expand the coverage of the cell discovery signal, the broadcast beam transmitted by the base station gNB may be directly forwarded, i.e., the NCR node directly forwards the SSB/CSI-RS beam transmitted by the base station, etc. When the base station and NCR node operate at low frequencies, the broadcast beam is typically transmitted using a wide beam to achieve the desired broadcast beam coverage, as shown in fig. 3A, i.e., sufficient coverage of the broadcast beam is ensured without additional improvement. But when the NCR node is operating at high frequencies, the NCR node simply forwards a single beam is not sufficient to cover the range that it wants to cover due to the propagation loss aggravated. For example, typically, the NCR node receives only one stronger SSB/CSI-RS beam from the base station, and cannot achieve the desired coverage if either wide beam (as shown in fig. 3B) or narrow beam (as shown in fig. 3C) forwarding is employed. Thus, when the NCR node operates at a high frequency, the NCR node needs to transmit a plurality of broadcast beams to provide sufficient coverage, and if the base station transmits a plurality of beams for each NCR node and then forwards the beams by the NCR node, a large load is imposed on the base station.
Considering that the NCR node has an MT with baseband processing capability, a digital-to-analog converter (Digital to Analog Converter) component, etc., these units can be reused to let the NCR node perform baseband processing on the broadcast signal by itself, including channel coding, radio frequency signal generation, amplification transmission, etc. In this case, the NCR node may generate a plurality of broadcast signal beams by itself according to the configuration of the base station, and provide sufficient coverage through multiple beams. As shown in fig. 4, the NCR node may receive a self-generating and transmitting configuration of the base station with respect to the broadcast signal beam and self-generate a plurality of broadcast signal beams to provide sufficient coverage. The configuration may include signal content information of a broadcast beam, broadcast beam parameter information such as beam direction and width information, and the like.
The signal sending method, the signal sending device, the communication equipment and the readable storage medium provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 5, fig. 5 is a flowchart of a signaling method according to an embodiment of the present application, where the method is applied to a forwarding node, such as an NCR node. As shown in fig. 5, the method comprises the steps of:
Step 51: the forwarding node determines a first transmission parameter of the first signal.
In this embodiment, the first signal is a signal received by the forwarding node from the base station. The first signal may be referred to as a forward signal, a downstream forward signal. The forwarding node may or may not forward the first signal received from the base station, which is not limited.
In some embodiments, the first signal may be a broadcast signal received by the forwarding node from the base station, such as SSB/CSI-RS, etc. Further, the first signal may also be, but is not limited to, a system message, a paging message, etc.
In some embodiments, the first transmission parameter may include, but is not limited to, a power parameter (e.g., received power, power spectral density, etc.), a time parameter (e.g., received time), etc. of the first signal.
Step 52: the forwarding node determines a second transmission parameter of the second signal according to the first transmission parameter.
In this embodiment, the second signal is a signal generated by the forwarding node. The second signal may be referred to as a spontaneous signal, a downstream spontaneous signal.
In some embodiments, the second signal may be a broadcast signal generated by a forwarding node, such as SSB/CSI-RS, etc. In addition, the second signal may also be, but is not limited to, a system message, a paging message, etc.
In some embodiments, the type of the second signal is different from the type of the first signal. For example, the first signal is SSB, and the second signal is a system message; or the first signal is SSB, and the second signal is CSI-RS; or the first signal is a system message, and the second signal is a CSI-RS; or, the first signal is a CSI-RS, and the second signal is other CSI-RSs; etc.
In some embodiments, a forwarding node may receive self-generating and transmitting configurations of a base station with respect to broadcast signal beams and self-generate a plurality of broadcast signal beams. The configuration may include signal content information of a broadcast beam, broadcast beam parameter information such as beam direction and width information, and the like.
In some embodiments, the second transmission parameter may include, but is not limited to, a power parameter (e.g., transmit power, power spectral density, etc.), a time parameter (e.g., transmit time), etc. of the second signal.
Step 53: the forwarding node transmits a second signal according to the second transmission parameter.
Here, the forwarding node may transmit the second signal according to the second transmission parameter after determining the second transmission parameter of the second signal.
According to the signal sending method, after the first transmission parameter of the first signal is determined, the forwarding node can determine the second transmission parameter of the second signal according to the first transmission parameter and send the second signal according to the second transmission parameter, wherein the first signal is a signal received by the forwarding node from the base station, and the second signal is a signal generated by the forwarding node. Thus, the forwarding node can transmit the self-generated signal. Further, determining the second transmission parameter of the second signal by means of the first transmission parameter of the first signal may enable the signal generated by the forwarding node to substantially coincide with the radio propagation characteristics of the signal received from the base station, thereby facilitating the determination of the uplink transmission timing, propagation path loss, etc. by the terminal based on the signal generated by the forwarding node, such as SSB/CSI-RS, etc. The self-generating signal of the forwarding node refers to a signal which is generated and transmitted by the forwarding node, and the transmitting process comprises the following processing steps: radio protocol layer processing, baseband coding, digital-to-analog conversion, and analog signal amplification and air interface transmission.
In the embodiment of the application, the power control can be performed on the spontaneous signals (such as the spontaneous broadcast signals and the like) of the forwarding node. The first transmission parameters may include: the received power of the target reference beam. The above-mentioned process of determining the second transmission parameter of the second signal according to the first transmission parameter may include any one of the following:
the forwarding node determines the transmission power of the second signal according to the received power and the first amplification factor; the first amplification factor can be set based on actual requirements; the transmission power of the second signal is for example equal to the product of the received power and the first amplification factor. In this way, based on the setting of the amplification factor, it is possible to realize evaluation of the transmission power of the second signal from the reception power of the first signal.
And the forwarding node determines the transmission power of the second signal according to the received power and the preconfigured maximum transmission power of the second signal. For example, the second amplification factor may be set, and the product of the received power and the second amplification factor may be compared with a preset maximum transmission power of the second signal, and the maximum value or the minimum value of the product and the maximum transmission power may be determined as the transmission power of the second signal. This can avoid an excessive transmission power of the second signal.
Optionally, the target reference beam may include at least one of:
forwarding the beam of the strongest first signal detected by the node;
the base station configures a beam of the indicated first signal;
the beam of the first signal having the closest time to the time of generation of the second signal is received.
In some embodiments, after the NCR node receives the broadcast signal (e.g., SSB/CSI-RS, etc.), the received power of the target reference beam may be determined first, and then the transmission power of the spontaneous broadcast signal may be estimated according to the broadcast signal forwarding power parameters configured by the base station, such as the amplification factor, the power spectral density or power, the maximum power or the maximum power spectral density, etc., and the spontaneous broadcast signal is transmitted at this transmission power.
For example, the transmission power of the spontaneous broadcasting signal may be determined according to the amplification factor as follows:
ptx (dBm) =Prx, ref (dBm) ×X (dB) equation one
Wherein Ptx represents the transmission power of the spontaneous broadcast signal. Prx, ref represents the received power of the target reference beam, such as the received power of the beam for the strongest detected broadcast signal, or the received power of the beam for the base station configuration indication broadcast signal. X represents the amplification factor of the broadcast signal and can be set based on actual requirements.
For another example, the following formula two may be adopted, where the transmission power of the spontaneous broadcast signal is determined according to the amplification factor and the maximum transmission power of the preconfigured spontaneous broadcast signal:
ptx (dBm) =min (Prx, ref (dBm) ×X (dB), ptx, max) equation two
Wherein Ptx represents the transmission power of the spontaneous broadcast signal. Prx, ref represents the received power of the target reference beam, such as the received power of the beam for the strongest detected broadcast signal, or the received power of the beam for the base station configuration indication broadcast signal. X represents the amplification factor of the broadcast signal and can be set based on actual requirements. Ptx, max represents the maximum transmission power of the pre-configured spontaneous broadcast signal, and can be configured by the base station.
It should be noted that the above embodiments are described by taking the received/transmitted power as an example, but the present application is not limited thereto, and the present application can also be applied to power spectrum density, etc., and the adopted methods are similar and will not be repeated here.
In the embodiment of the application, the spontaneous signals (such as spontaneous broadcast signals and the like) of the forwarding node can be sent at fixed time. The first transmission parameters may include: the time of reception of the target reference beam. The determining the second transmission parameter of the second signal according to the first transmission parameter may include: and the forwarding node determines the target sending time of the second signal according to the receiving time and the first time offset.
The first time offset may be set based on actual requirements, for example, n (n > 0) time slots or symbols, which is not limited. The target transmission time of the second signal is for example equal to the sum of the reception time and the first time offset. In this way, based on the setting of the time offset, it is possible to realize evaluation of the target transmission time of the second signal in accordance with the reception time of the first signal.
Optionally, in consideration of beam multipath, the receiving time of the target reference beam may include at least one of the following:
the receiving time of the first path, the first path is the signal path of the earliest reaching forwarding node in the multipath signals of the target reference beam;
and receiving time of a second path, wherein the second path is the strongest path in multipath signals reaching the forwarding node of the target reference beam.
Optionally, the target reference beam may include at least one of:
forwarding the beam of the strongest first signal detected by the node;
the base station configures a beam of the indicated first signal;
the beam of the first signal having the closest time to the time of generation of the second signal is received.
Alternatively, since timing errors are difficult to avoid, a first deviation range may be set or agreed upon to ensure that the difference between the actual transmission time of the second signal and the target transmission time of the second signal is within the first deviation range. Wherein the actual transmission time of the second signal represents the time when the forwarding node actually transmitted the second signal, and the target transmission time of the second signal represents the time of transmitting the second signal estimated based on the reception time of the first signal. In some embodiments, the time when the NCR node transmits the spontaneous broadcast signal may be determined according to the arrival time of the broadcast signal (e.g., SSB/CSI-RS, etc.) it receives and the time offset of the spontaneous broadcast signal relative to the received broadcast signal, as shown in the following equation three:
T Spontaneous generation ＝T RX +T offset Formula III
Wherein,,T spontaneous generation Indicating the transmission time of the spontaneous broadcast signal, T RX Representing the reception time of the broadcast signal, T offset Representing a predetermined time offset, such as n (n > 0) slots or symbols.
In some embodiments, prior to transmitting the spontaneous broadcast signal, the NCR node determines the first path (i.e., the earliest arriving path, 1) of the broadcast signal based on the received broadcast signal (e.g., SSB/CSI-RS) from the base station st path) or the strongest path (strong path), and then determines the transmission time (reference time) of the spontaneous broadcast signal based on this reception time. The ideal spontaneous broadcast signal timing is the time when the generation or transmission time of the spontaneous broadcast signal aligns with the determined path. Since timing errors are difficult to avoid, the protocol may define an error range of the spontaneous broadcast signal timing from the reference time, and the NCR node should ensure that the larger the subcarrier spacing SCS of the broadcast signal is, the smaller the allowable error range is within the deviation range between the generation/transmission time of the spontaneous broadcast signal and the reference time.
Such as shown in fig. 6, is a schematic diagram of multipath for an NCR node to receive a broadcast signal beam from a base station. The NCR node may determine the transmission time of the spontaneous broadcast signal according to multipath information of a broadcast signal beam having a reception time closest to the generation time of the spontaneous broadcast signal, such as the reception time of the first path or the strongest path.
In the embodiment of the application, the first signal and the second signal can be sent in a multiplexing way, for example, the first signal and the second signal can be sent in a multiplexing way. Optionally, the multiplexing manner of the first signal and the second signal may include one of the following: time division multiplexing and frequency division multiplexing.
Optionally, when the multiplexing mode of the first signal and the second signal is frequency division multiplexing, an isolation bandwidth is provided between the frequency domain resource of the first signal and the frequency domain resource of the second signal, so as to avoid mutual interference caused by imperfect synchronization of the first signal and the second signal. The isolation bandwidth may be requested by the forwarding node to the base station, for example, when the spontaneous broadcast signal and the forwarding signal of the NCR node are multiplexed by frequency division, there may be an isolation bandwidth between the spontaneous broadcast signal and the forwarding signal, so as to avoid mutual interference caused by imperfect synchronization of the forwarding signal and the spontaneous broadcast signal.
Optionally, before the forwarding node sends the second signal, the forwarding node may determine a multiplexing manner, such as time division multiplexing or frequency division multiplexing, of the first signal and the second signal, and then send the second signal according to the determined second transmission parameter and the multiplexing manner, so as to ensure normal signal sending.
Alternatively, in determining the multiplexing manner of the first signal and the second signal, the forwarding node may receive configuration information from the base station, where the configuration information is used to configure the multiplexing manner of the first signal and the second signal, such as time division multiplexing or frequency division multiplexing, so as to determine the multiplexing manner of the first signal and the second signal based on the configuration information.
Optionally, before receiving the configuration information from the base station, the forwarding node may report capability information to the base station, where the capability information is used to indicate a signal multiplexing mode (such as time division multiplexing or frequency division multiplexing) supported by the forwarding node, and the base station configures a multiplexing mode of the first signal and the second signal. And/or, the forwarding node may send a first request to the base station, where the first request is used to request a multiplexing manner (such as time division multiplexing or frequency division multiplexing) of the first signal and the second signal, and the base station configures the multiplexing manner of the first signal and the second signal.
In some embodiments, if the multiplexing mode requested by the forwarding node is time division multiplexing, the base station may indicate that the multiplexing mode actually used is time division multiplexing.
In some embodiments, if the multiplexing mode requested by the forwarding node is frequency division multiplexing, the base station may indicate that the actually used multiplexing mode is time division multiplexing or frequency division multiplexing.
In some embodiments, if the forwarding node is configured to transmit a spontaneous signal, such as a spontaneous broadcast signal, the forwarding node may no longer forward the broadcast signal beam from the base station.
For example, if the multiplexing manner of the first signal and the second signal is time division multiplexing, as shown in fig. 7A, when there is a second signal to be transmitted, the NCR node may suspend forwarding of the first signal from the base station, and only transmit the second signal beam generated by itself, that is, suspend forwarding of the first signal from the base station in a first time window when there is a spontaneous signal to be transmitted. The NCR node may forward the first signal from the base station during a second time window when no spontaneous signal needs to be transmitted. Wherein the second signal is a different signal than the first signal. For example, the first signal is a radio frequency signal, and the second signal is a spontaneous broadcast signal such as SSB/CSI-RS; alternatively, the first signal is a system message and the second signal is a spontaneous broadcast signal such as SSB/CSI-RS; alternatively, the first signal is a broadcast signal such as SSB/CSI-RS, and the second signal is a paging message; etc.
For another example, if the multiplexing method of the first signal and the second signal is frequency division multiplexing, as shown in fig. 7B, the NCR node may suspend forwarding of the first signal from the base station on the frequency resource occupied by the second signal, and only transmit the self-generated second signal beam. Whereas on other frequency resources the NCR node may forward the first signal from the base station. For example, the first signal is a radio frequency signal, and the second signal is a spontaneous broadcast signal such as SSB/CSI-RS; alternatively, the first signal is a system message and the second signal is a spontaneous broadcast signal such as SSB/CSI-RS; alternatively, the first signal is a broadcast signal such as SSB/CSI-RS, and the second signal is a paging message; etc.
In the embodiment of the present application, the forwarding node includes a mobile terminal MT unit and a relay module RU, and a multiplexing manner of an uplink spontaneous signal of the MT unit and an uplink forwarding signal of the RU may include at least one of the following:
time division multiplexing, frequency division multiplexing, space division multiplexing.
Alternatively, a forwarding node, such as an NCR node, may report to the base station the multiplexing of the uplink spontaneous signals of the MT unit and the uplink forward signals of the RU that it supports or is desired. After receiving the multiplexing mode supported or expected by the forwarding node reported by the forwarding node, the base station can determine and configure the multiplexing mode of the uplink spontaneous signal of the MT unit and the uplink forwarding signal of the RU. The uplink spontaneous signals of the MT unit include, but are not limited to, a physical uplink control channel PUCCH signal, a physical uplink shared channel PUSCH signal, and the like. The uplink retransmission signal of the RU includes, but is not limited to, a physical random access channel signal PUCCH signal and PUSCH signal of a terminal reaching the retransmission node, and the like.
According to the signal sending method provided by the embodiment of the application, the execution main body can be a signal sending device. In the embodiment of the present application, a signal transmission method performed by a signal transmission device is taken as an example, and the signal transmission device provided in the embodiment of the present application is described.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application, where the signal transmission device 80 includes:
a first determining module 81, configured to determine a first transmission parameter of a first signal, where the first signal is a signal received by the forwarding node from a base station;
a second determining module 82, configured to determine a second transmission parameter of a second signal according to the first transmission parameter, where the second signal is a signal generated by the forwarding node;
and a sending module 83, configured to send the second signal according to the second transmission parameter.
Optionally, the first transmission parameter includes: the received power of the target reference beam; the second determining module 82 is specifically configured to any one of the following:
determining the transmission power of the second signal according to the received power and the first amplification factor;
and determining the transmission power of the second signal according to the received power and the preconfigured maximum transmission power of the second signal.
Optionally, the first transmission parameter includes: the time of reception of the target reference beam; the second determining module 82 is specifically configured to:
And determining the target sending time of the second signal according to the receiving time and the first time offset.
Optionally, the receiving time of the target reference beam includes at least one of:
a first path receiving time, wherein the first path is a signal path which reaches the forwarding node earliest in multipath signals of the target reference beam;
and receiving time of a second path, wherein the second path is the strongest path of multipath signals of the target reference beam reaching the forwarding node.
Optionally, the target reference beam includes at least one of:
the beam of the strongest first signal detected by the forwarding node;
the base station configures a beam of the indicated first signal;
and receiving a beam of the first signal with the time closest to the generation time of the second signal.
Optionally, the multiplexing manner of the first signal and the second signal includes one of the following:
time division multiplexing and frequency division multiplexing.
Optionally, the signal transmitting apparatus 80 further includes:
a third determining module, configured to determine a multiplexing manner of the first signal and the second signal;
the sending module 83 is further configured to: and sending a second signal according to the second transmission parameter and the multiplexing mode.
Optionally, the third determining module is specifically configured to: and receiving configuration information from the base station, wherein the configuration information is used for configuring the multiplexing mode of the first signal and the second signal.
Optionally, the signal transmitting apparatus 80 further includes:
the execution module is used for reporting capability information to the base station, wherein the capability information is used for indicating a signal multiplexing mode supported by the forwarding node; or sending a first request to the base station, where the first request is used to request a multiplexing mode of the first signal and the second signal.
Optionally, when the multiplexing mode of the first signal and the second signal is frequency division multiplexing, an isolation bandwidth is provided between the frequency domain resource of the first signal and the frequency domain resource of the second signal.
Optionally, the first signal or the second signal includes at least one of: broadcast signals, system messages, paging messages.
Optionally, the forwarding node includes a mobile terminal MT unit and a relay module RU, and a multiplexing manner of an uplink spontaneous signal of the MT unit and an uplink forwarding signal of the RU includes at least one of the following:
time division multiplexing, frequency division multiplexing, space division multiplexing.
The signal sending device 80 provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 5, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
Optionally, as shown in fig. 9, the embodiment of the present application further provides a communication device 90, which includes a processor 91 and a memory 92, where the memory 92 stores a program or an instruction that can be executed on the processor 91, and the program or the instruction can implement each step of the foregoing signal transmission method embodiment when executed by the processor 91, and achieve the same technical effect, so that repetition is avoided and no further description is given here.
The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the processor is used for determining a first transmission parameter of a first signal, and the first signal is a signal received by the forwarding node from a base station; and determining a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is generated by the forwarding node, and the communication interface is used for transmitting the second signal according to the second transmission parameter. The embodiment of the communication device corresponds to the embodiment of the method shown in fig. 5, and each implementation process and implementation manner of the embodiment of the method are applicable to the embodiment of the communication device, and can achieve the same technical effects, so that repetition is avoided and no further description is provided here.
Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 10, the network side device 100 includes: antenna 101, radio frequency device 102, baseband device 103, processor 104, and memory 105. Antenna 101 is coupled to radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information via the antenna 101, and transmits the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes information to be transmitted, and transmits the processed information to the radio frequency device 102, and the radio frequency device 102 processes the received information and transmits the processed information through the antenna 101.
The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 103, where the baseband apparatus 103 includes a baseband processor.
The baseband apparatus 103 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 10, where one chip, for example, a baseband processor, is connected to the memory 105 through a bus interface, so as to call a program in the memory 105 to perform the network device operation shown in the above method embodiment.
The network-side device may also include a network interface 106, such as a common public radio interface (common public radio interface, CPRI).
Specifically, the network side device 100 of the embodiment of the present application further includes: instructions or programs stored in the memory 105 and executable on the processor 104, the processor 104 invokes the instructions or programs in the memory 105 to perform the method performed by the modules shown in fig. 8, and achieve the same technical effects, so repetition is avoided and will not be described here.
The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above signal transmission method embodiment, and can achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the signal transmission method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the foregoing signal transmission method embodiment, and achieve the same technical effects, and are not repeated herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (21)
1. A signal transmission method, comprising:
the forwarding node determines a first transmission parameter of a first signal, wherein the first signal is a signal received by the forwarding node from a base station;
the forwarding node determines a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node;
and the forwarding node transmits the second signal according to the second transmission parameter.
2. The method of claim 1, wherein the first transmission parameter comprises: the received power of the target reference beam;
the determining, according to the first transmission parameter, a second transmission parameter of a second signal, including any one of the following:
the forwarding node determines the transmission power of the second signal according to the received power and the first amplification factor;
and the forwarding node determines the transmission power of the second signal according to the received power and the preconfigured maximum transmission power of the second signal.
3. The method of claim 1, wherein the first transmission parameter comprises: the time of reception of the target reference beam;
The determining, according to the first transmission parameter, a second transmission parameter of a second signal includes:
and the forwarding node determines the target sending time of the second signal according to the receiving time and the first time offset.
4. A method according to claim 3, wherein the receive time of the target reference beam comprises at least one of:
a first path receiving time, wherein the first path is a signal path which reaches the forwarding node earliest in multipath signals of the target reference beam;
and receiving time of a second path, wherein the second path is the strongest path of multipath signals of the target reference beam reaching the forwarding node.
5. The method according to any of claims 2 to 4, wherein the target reference beam comprises at least one of:
the beam of the strongest first signal detected by the forwarding node;
the base station configures a beam of the indicated first signal;
and receiving a beam of the first signal with the time closest to the generation time of the second signal.
6. A method according to claim 3 or 4, characterized in that the difference between the actual transmission time of the second signal and the target transmission time of the second signal is within a first deviation range.
7. The method according to any of claims 1 to 6, wherein the multiplexing of the first signal and the second signal comprises one of:
time division multiplexing and frequency division multiplexing.
8. The method according to any one of claims 1 to 6, further comprising:
the forwarding node determines a multiplexing mode of the first signal and the second signal;
wherein said transmitting said second signal according to said second transmission parameter comprises:
and the forwarding node sends the second signal according to the second transmission parameter and the multiplexing mode.
9. The method of claim 8, wherein determining the multiplexing of the first signal and the second signal comprises:
the forwarding node receives configuration information from the base station, wherein the configuration information is used for configuring a multiplexing mode of the first signal and the second signal.
10. The method of claim 9, wherein prior to receiving configuration information from the base station, the method further comprises at least one of:
the forwarding node reports capability information to the base station, wherein the capability information is used for indicating a signal multiplexing mode supported by the forwarding node;
The forwarding node sends a first request to the base station, where the first request is used to request a multiplexing mode of the first signal and the second signal.
11. The method according to any of claims 1 to 10, wherein when the multiplexing of the first signal and the second signal is frequency division multiplexing, there is an isolation bandwidth between the frequency domain resources of the first signal and the frequency domain resources of the second signal.
12. The method of any one of claims 1 to 11, wherein the first signal or the second signal comprises at least one of: broadcast signals, system messages, paging messages.
13. The method according to any of claims 1 to 12, wherein the forwarding node comprises a mobile terminal MT unit and a relay module RU, and the multiplexing manner of the uplink spontaneous signals of the MT unit and the uplink forwarding signals of the RU comprises at least one of the following:
time division multiplexing, frequency division multiplexing, space division multiplexing.
14. A signal transmission apparatus, comprising:
the first determining module is used for determining a first transmission parameter of a first signal, wherein the first signal is a signal received by the forwarding node from a base station;
The second determining module is used for determining a second transmission parameter of a second signal according to the first transmission parameter, wherein the second signal is a signal generated by the forwarding node;
and the sending module is used for sending the second signal according to the second transmission parameter.
15. The apparatus of claim 14, wherein the first transmission parameter comprises: the received power of the target reference beam;
the second determining module is specifically configured to any one of the following:
determining the transmission power of the second signal according to the received power and the first amplification factor;
and determining the transmission power of the second signal according to the received power and the preconfigured maximum transmission power of the second signal.
16. The apparatus of claim 14, wherein the first transmission parameter comprises: the time of reception of the target reference beam;
the second determining module is specifically configured to:
and determining the target sending time of the second signal according to the receiving time and the first time offset.
17. The apparatus of claim 16, wherein the receive time of the target reference beam comprises at least one of:
A first path receiving time, wherein the first path is a signal path which reaches the forwarding node earliest in multipath signals of the target reference beam;
and receiving time of a second path, wherein the second path is the strongest path of multipath signals of the target reference beam reaching the forwarding node.
18. The apparatus of any of claims 15 to 17, wherein the target reference beam comprises at least one of:
the beam of the strongest first signal detected by the forwarding node;
the base station configures a beam of the indicated first signal;
and receiving a beam of the first signal with the time closest to the generation time of the second signal.
19. The apparatus according to any of claims 14 to 18, wherein the multiplexing of the first signal and the second signal comprises one of:
time division multiplexing and frequency division multiplexing.
20. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the signalling method of any one of claims 1 to 13.
21. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the signaling method according to any of claims 1 to 13.
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| CN202210367994.5A CN116938307A (en) | 2022-04-08 | 2022-04-08 | Signal transmission method, signal transmission device, communication equipment and readable storage medium |
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