CN111147162B - Method, device and equipment for transmitting measurement signal - Google Patents
Method, device and equipment for transmitting measurement signal Download PDFInfo
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- CN111147162B CN111147162B CN201811303526.1A CN201811303526A CN111147162B CN 111147162 B CN111147162 B CN 111147162B CN 201811303526 A CN201811303526 A CN 201811303526A CN 111147162 B CN111147162 B CN 111147162B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0078—Timing of allocation
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Abstract
The invention provides a method, a device and equipment for transmitting a measurement signal, and relates to the technical field of communication. The transmission method of the measurement signal is applied to first equipment and comprises the following steps: sending a measurement signal to a second device, wherein the measurement signal is used for measurement of a through channel between the first device and the second device. The scheme of the invention solves the problem of poor data transmission quality of the existing V2X through link technology.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a device for transmitting a measurement signal.
Background
In the current communication process, in order to ensure the validity of data transmission, measurement of channel state information CSI is often performed. Of course, in the 5G new air interface (NR) -based V2X (vehicle to outside information exchange) wireless communication technology, in the application scenarios of unicast and multicast, CSI measurement is also required.
However, for the V2X sidelink, there is no feedback mechanism at present, and there is no corresponding SRS or CSI-RS similar signal to complete, which reduces the quality of data transmission.
Disclosure of Invention
The invention aims to provide a method, a device and equipment for transmitting a measurement signal so as to improve the data transmission quality.
In order to achieve the above object, an embodiment of the present invention provides a method for transmitting a measurement signal, applied to a first device, including:
sending a measurement signal to a second device, wherein the measurement signal is used for measurement of a through channel between the first device and the second device.
Wherein sending the measurement signal to the second device comprises:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
In order to achieve the above object, an embodiment of the present invention provides a method for transmitting a measurement signal, applied to a second device, including:
receiving a measurement signal sent by a first device, wherein the measurement signal is used for measuring a direct channel between the first device and a second device.
The receiving of the measurement signal sent by the first device includes:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
After receiving the measurement signal sent by the first device, the method further includes:
and measuring the through channel according to the measuring signal.
Wherein, the measuring of the through channel according to the measuring signal comprises:
and based on a preset measurement period or a measurement instruction triggered at the current moment, the measurement signal is utilized to complete the measurement of the through channel.
After receiving the measurement signal sent by the first device, the method further includes:
and carrying out automatic gain control processing and estimation of a through channel by using the measurement signal.
Wherein, the automatic gain control processing and the estimation of the through channel by using the measurement signal comprise:
under the condition that the carrier interval of the measurement signal is larger than that of the target data, if the automatic gain control processing period is smaller than the transmission duration of a single measurement signal, after the automatic gain control processing, performing interpolation supplementation on all measurement signals in the same time slot, and finishing channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
In order to achieve the above object, an embodiment of the present invention provides a terminal device, where the terminal device is a first device, and the terminal device includes: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor;
the transceiver is configured to send a measurement signal to a second device, wherein the measurement signal is used for measurement of a through channel between the first device and the second device.
Wherein the transceiver is further configured to:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
In order to achieve the above object, an embodiment of the present invention provides a terminal device, where the terminal device is a second device, and the terminal device includes: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor;
the transceiver is configured to receive a measurement signal sent by a first device, where the measurement signal is used for measurement of a direct channel between the first device and the second device.
Wherein the transceiver is further configured to:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Wherein the processor is configured to perform a through channel measurement according to the measurement signal.
The processor is further configured to complete measurement of the direct channel by using the measurement signal based on a preset measurement period or a measurement instruction triggered at the current time.
Wherein the processor is further configured to perform automatic gain control processing and estimation of a through channel using the measurement signal.
The processor is further configured to, under the condition that the carrier interval of the measurement signal is greater than the carrier interval of the target data, perform interpolation supplementation on all measurement signals in the same time slot after automatic gain control processing if an automatic gain control processing period is less than a transmission duration of a single measurement signal, and complete channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
In order to achieve the above object, an embodiment of the present invention provides a transmission apparatus for a measurement signal, applied to a first device, including:
a sending module, configured to send a measurement signal to a second device, where the measurement signal is used for measuring a direct channel between the first device and the second device.
In order to achieve the above object, an embodiment of the present invention provides a transmission apparatus for a measurement signal, applied to a second device, including:
the device comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a measuring signal sent by first equipment, and the measuring signal is used for measuring a direct channel between the first equipment and second equipment.
To achieve the above object, an embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps in the transmission method of a measurement signal applied to a first device as described above.
To achieve the above object, an embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps in the transmission method of a measurement signal applied to a second device as described above.
The technical scheme of the invention has the following beneficial effects:
according to the transmission method of the measurement signal, the first equipment sends the measurement signal which can be used for the measurement of the through channel between the first equipment and the second equipment to the second equipment, so that the second equipment can directly complete the side of the through channel, and additional reference signals such as CSI-RS and SRS are not required to be introduced.
Drawings
Fig. 1 is a schematic flowchart of a transmission method of a measurement signal applied to a first device according to an embodiment of the present invention;
FIG. 2 is a diagram of a slot structure;
FIG. 3 is a diagram illustrating a channel estimation interpolation process;
FIG. 4 is a second schematic diagram of a channel estimation interpolation process;
FIG. 5 is a second schematic diagram of a timeslot structure;
fig. 6 is a flowchart illustrating a transmission method of a measurement signal applied to a second device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a method for transmitting a measurement signal according to an embodiment of the present invention is applied to a first device, and includes:
Thus, in the transmission method of the measurement signal according to the embodiment of the present invention, the first device can send the measurement signal to the second device, and the measurement signal is used for measuring the direct channel between the first device and the second device, and the second device can complete the measurement of the direct channel based on the received measurement signal, thereby improving the quality of data transmission between devices.
It should be noted that the measurement signal is a preamble RS, which is used for measurement of the channel state information CSI.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Taking the specifically adopted sequence of preamble RS as ZC sequence as an example, but not limited to 800us PRACH sequence in LTE can be used, and the sequence is composed of a sequence with length NZCThe ZC sequence of (a) is cyclically shifted to be defined as:
where u is the index of the ZC sequence, NZCPreferably, the number is a prime number, and n is an integer, so that the number of ZC sequences can be maximized under the condition of meeting the optimal cross-correlation performance, and finally, a preamble RS sequence x is obtainedu。
Optionally, step 101 comprises:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Here, on the one hand, the first device may send a separate measurement signal to the second device before sending the target data, and at this time, no data is transmitted in the time slot in which the measurement signal is located, so that the second device can complete measurement of the direct communication channel by using the received measurement signal, and then perform link adaptation by using the measured CSI, thereby achieving high-quality data transmission. Of course, the OFDM symbol used in the slot by the measurement signal is preset by the first device and the second device through negotiation.
On the other hand, the first device sends the target data and the measurement signal to the second device through the same time slot, so that the second device can complete measurement of the direct communication channel according to a preset period or when the measurement instruction is triggered according to needs at the current moment, and at this time, the sidelink data channel does not need to map the CSI reference CSI-RS or the channel sounding reference SRS signal any more. Moreover, since the measurement signal adopts a sequence with correlation, the measurement signal is equivalent to a known orthogonal sequence for a receiving end, and the receiving end can also complete the process of Automatic Gain Control (AGC) processing and channel estimation. When the target data and the measurement signal are transmitted in the same time slot, the first symbol for transmitting the measurement signal and the second symbol for transmitting the target data may be implemented by one OFDM symbol or multiple OFDM symbols.
It should also be appreciated that after the connection is established, CSI measurement, AGC processing, channel estimation, etc. using the measurement signal have no sequence duration requirement on the measurement signal, so the carrier spacing SCS of the measurement signal may be different from the carrier spacing of the data transmission, and any other reasonable SCS may be used. Thus, in this embodiment, optionally, when the measurement signal is transmitted using a first symbol, the first symbol carries one or more of the measurement signals.
For example, in a time slot shown in fig. 2, there are 14 OFDM symbols, and the measurement signal is located on the first OFDM symbol, but actually the SCS of the measurement signal is set to 60KHz and the SCS of the data is set to 30KHz, so that the first symbol of the measurement signal transmitted by the first device can place the measurement signal with two 60KHz sub-carrier intervals, and of course, the first OFDM symbol is divided into two identical symbols a and b, and is a sequence that can be detected by the receiving end, and the measurement signal is equivalent to the AGC training signal.
After the second device receives the target data and the measurement signal transmitted through the same timeslot, it can further perform automatic gain control processing and estimation of the through channel by using the measurement signal.
In this case, the measurement signal is used to perform automatic gain control processing and estimation of the through channel, so that the density of the DMRS can be reduced and overhead can be saved.
Specifically, under the condition that the carrier interval of the measurement signal is greater than that of the target data, if the automatic gain control processing period is less than the transmission duration of a single measurement signal, after the automatic gain control processing, interpolation supplementation is performed on all measurement signals in the same time slot, and channel estimation is completed; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
Continuing with the example of fig. 2, one OFDM symbol is used to transmit two measurement signals, and since the AGC at this time is twice less dense in the frequency domain than the adjacent symbol, the channel estimation needs to be supplemented by interpolation, so that the channel estimation can be aligned with the granularity of the frequency domain of the data region, and the specific channel estimation interpolation process is repeated for the channel estimation value of symbol a as shown in fig. 3. If the AGC processing period T is less than the transmission duration of a single signal, and the second device can successfully receive the measurement signals a and b, interpolation supplementation can be performed by using the symbols a and b as shown in fig. 4, and channel estimation is completed, wherein an average value is preferably used as a final channel estimation value; if T is greater than the transmission duration of a single signal and less than the transmission durations of all measured signals in the same timeslot, the symbol a is severely distorted due to the AGC processing process, and the second device cannot normally decode the symbol a, so that channel estimation can be performed only based on the symbol b; if T is longer than the transmission time of all the measurement signals in the same time slot, and the symbols a and b are all used in the AGC adjustment process and cannot be used for channel estimation, only the received measurement signals are used for carrying out automatic gain control processing.
Furthermore, it should be appreciated that in this embodiment, when the first symbol is a plurality of OFDM symbols, for example, two OFDM symbols are divided into symbols a, b, c and d as shown in fig. 5, CSI measurement, automatic gain control processing and estimation of the through channel can be performed by the received measurement signal in the case where the SCS of the measurement signal is increased but T is greater than a single data symbol period.
In summary, in the transmission method of the measurement signal according to the embodiment of the present invention, the first device sends the measurement signal that can be used for the measurement of the through channel between the first device and the second device to the second device, so that the second device can directly complete the side of the through channel without additionally introducing reference signals such as CSI-RS and SRS.
As shown in fig. 6, an embodiment of the present invention further provides a method for transmitting a measurement signal, which is applied to a second device, and includes:
Thus, according to the above steps, the second device can receive the measurement signal sent by the first device and used for the direct channel measurement between the first device and the second device, so that the direct channel side is directly completed based on the measurement signal, and reference signals such as CSI-RS and SRS do not need to be additionally introduced.
Wherein, the measurement signal is preamble RS, which is used for measuring CSI.
And, the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Taking the specifically adopted sequence of preamble RS as ZC sequence as an example, but not limited to 800us PRACH sequence in LTE can be used, and the sequence is composed of a sequence with length NZCThe ZC sequence of (a) is cyclically shifted to be defined as:
where u is the index of the ZC sequence, NZCPreferably, the number is a prime number, and n is an integer, so that the number of ZC sequences can be maximized under the condition of meeting the optimal cross-correlation performance, and finally, a preamble RS sequence x is obtainedu。
Optionally, step 601 comprises:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Here, corresponding to the sending method of the first device in the previous embodiment, the second device performs corresponding receiving, which is not described herein again.
Optionally, when the measurement signal is transmitted using a first symbol, the first symbol carries one or more of the measurement signals.
Optionally, after receiving the measurement signal sent by the first device, the method further includes:
and measuring the through channel according to the measuring signal.
Further, the measuring of the through channel according to the measurement signal includes:
and based on a preset measurement period or a measurement instruction triggered at the current moment, the measurement signal is utilized to complete the measurement of the through channel.
When the measurement signal and the target data are received through the same time slot, CSI measurement does not need to be directly performed as the measurement signal received through a separate time slot, but is performed for a preset measurement period or specific requirements such as a measurement instruction triggered at the current time.
In this embodiment, considering that the measurement signal is a correlation sequence, which is equivalent to a known orthogonal sequence for the receiving end, it can also be used to complete the process of automatic gain control AGC processing and channel estimation. Optionally, after receiving the measurement signal sent by the first device, the method further includes:
and carrying out automatic gain control processing and estimation of a through channel by using the measurement signal.
Specifically, the automatic gain control processing and the estimation of the through channel by using the measurement signal include:
under the condition that the carrier interval of the measurement signal is larger than that of the target data, if the automatic gain control processing period is smaller than the transmission duration of a single measurement signal, after the automatic gain control processing, performing interpolation supplementation on all measurement signals in the same time slot, and finishing channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
Continuing with the example of fig. 2, one OFDM symbol is used to transmit two measurement signals, and since the AGC at this time is twice less dense in the frequency domain than the adjacent symbol, the channel estimation needs to be supplemented by interpolation, so that the channel estimation can be aligned with the granularity of the frequency domain of the data region, and the specific channel estimation interpolation process is repeated for the channel estimation value of symbol a as shown in fig. 3. If the AGC processing period T is less than the transmission duration of a single signal, and the second device can successfully receive the measurement signals a and b, interpolation supplementation can be performed by using the symbols a and b as shown in fig. 4, and channel estimation is completed, wherein an average value is preferably used as a final channel estimation value; if T is greater than the transmission duration of a single signal and less than the transmission durations of all measured signals in the same timeslot, the symbol a is severely distorted due to the AGC processing process, and the second device cannot normally decode the symbol a, so that channel estimation can be performed only based on the symbol b; if T is longer than the transmission time of all the measurement signals in the same time slot, and the symbols a and b are all used in the AGC adjustment process and cannot be used for channel estimation, only the received measurement signals are used for carrying out automatic gain control processing.
Furthermore, it should be appreciated that in this embodiment, when the first symbol is a plurality of OFDM symbols, for example, two OFDM symbols are divided into symbols a, b, c and d as shown in fig. 6, CSI measurement, automatic gain control processing and estimation of the through channel can be performed by the received measurement signal in the case where the SCS of the measurement signal is increased but T is greater than a single data symbol period.
In summary, in the transmission method of the measurement signal according to the embodiment of the present invention, the second device can receive the measurement signal sent by the first device and used for the measurement of the through channel between the first device and the second device, so that the side of the through channel is directly completed based on the measurement signal without additionally introducing reference signals such as CSI-RS and SRS.
As shown in fig. 7, an embodiment of the present invention further provides a terminal device, where the terminal device is a first device, and the terminal device includes: a transceiver 710, a memory 720, a processor 700, and a computer program stored on the memory 720 and executable on the processor 700;
the transceiver 710 is configured to send a measurement signal to a second device, wherein the measurement signal is used for measurement of a through channel between the first device and the second device.
Wherein the transceiver 710 is further configured to:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. 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 710 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. The user interface 730 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.
The terminal device of this embodiment sends the measurement signal that can be used for the direct channel measurement between the first device and the second device to the second device, so that the second device can directly complete the side of the direct channel without additionally introducing reference signals such as CSI-RS and SRS.
As shown in fig. 8, a terminal device according to an embodiment of the present invention is a second device, and includes: a transceiver 820, a memory 840, a processor 810, and a computer program stored on the memory 840 and executable on the processor 810;
the transceiver 820 is configured to receive a measurement signal sent by a first device, wherein the measurement signal is used for measuring a direct channel between the first device and a second device.
Wherein the transceiver 820 is further configured to:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Wherein the processor 810 is configured to perform a through channel measurement according to the measurement signal.
The processor 810 is further configured to complete the measurement of the direct channel by using the measurement signal based on a preset measurement period or a measurement instruction triggered at the current time.
Wherein the processor 810 is further configured to perform automatic gain control processing and estimation of a through channel by using the measurement signal.
The processor 810 is further configured to, when the carrier interval of the measurement signal is greater than the carrier interval of the target data, perform interpolation compensation on all measurement signals in the same time slot after automatic gain control processing if an automatic gain control processing period is less than a transmission duration of a single measurement signal, and complete channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
In fig. 8, a bus architecture (represented by bus 800), bus 800 may include any number of interconnected buses and bridges, bus 800 linking together various circuits including one or more processors, represented by general purpose processor 810, and memory, represented by memory 840. The bus 800 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. A bus interface 830 provides an interface between the bus 800 and the transceiver 820. The transceiver 820 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. For example: the transceiver 820 receives external data from other devices. The transceiver 820 is used for transmitting data processed by the processor 810 to other devices. Depending on the nature of the computing system, a user interface 850, such as a keypad, display, speaker, microphone, joystick, may also be provided.
The processor 810 is responsible for managing the bus 800 and general processing, such as running a general-purpose operating system as described above. And storage 840 may be used to store data used by processor 810 in performing operations.
Alternatively, processor 810 may be a CPU, ASIC, FPGA, or CPLD.
The terminal equipment of the embodiment of the invention can receive the measurement signal which is sent by the first equipment and used for the measurement of the through channel between the first equipment and the second equipment, thereby directly completing the side of the through channel based on the measurement signal without additionally introducing reference signals such as CSI-RS, SRS and the like.
The transmission device of the measurement signal of the embodiment of the invention is applied to first equipment and comprises:
a sending module, configured to send a measurement signal to a second device, where the measurement signal is used for measuring a direct channel between the first device and the second device.
The sending module is further configured to:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
The device of the embodiment of the invention sends the measuring signal which can be used for the direct channel measurement between the first equipment and the second equipment to the second equipment, so that the second equipment can directly finish the side of the direct channel without additionally introducing reference signals such as CSI-RS, SRS and the like.
It should be noted that the apparatus is an apparatus to which the above-mentioned transmission method for a measurement signal applied to a first device is applied, and the implementation manner of the embodiment of the method is applied to the apparatus, and the same technical effect can be achieved.
The embodiment of the invention also provides a transmission device of the measurement signal, which is applied to second equipment and comprises the following components:
the device comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a measuring signal sent by first equipment, and the measuring signal is used for measuring a direct channel between the first equipment and second equipment.
Wherein the receiving module is further configured to:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, and the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot.
Wherein the first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
Wherein the sequence with correlation adopted by the measuring signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
Wherein the apparatus further comprises:
and the first processing module is used for measuring the through channel according to the measuring signal.
Wherein the first processing module is further configured to:
and based on a preset measurement period or a measurement instruction triggered at the current moment, the measurement signal is utilized to complete the measurement of the through channel.
Wherein the apparatus further comprises:
and the second processing module is used for carrying out automatic gain control processing and estimation of a through channel by using the measurement signal.
Wherein the second processing module is further configured to:
under the condition that the carrier interval of the measurement signal is larger than that of the target data, if the automatic gain control processing period is smaller than the transmission duration of a single measurement signal, after the automatic gain control processing, performing interpolation supplementation on all measurement signals in the same time slot, and finishing channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
The device of the embodiment of the invention can receive the measurement signal which is sent by the first equipment and used for the measurement of the through channel between the first equipment and the second equipment, thereby directly finishing the side of the through channel based on the measurement signal without additionally introducing reference signals such as CSI-RS, SRS and the like.
It should be noted that the apparatus is an apparatus to which the above-mentioned transmission method for a measurement signal applied to the second device is applied, and the implementation manner of the embodiment of the method is applied to the apparatus, and the same technical effect can be achieved.
Another embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, realizes the steps in the transmission method of a measurement signal as applied to a first device as above.
Another embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, realizes the steps in the transmission method of a measurement signal as applied to a second device as above.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It is further noted that the terminal devices described in this specification include, but are not limited to, smart phones, tablets, automobiles, etc., and many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence. In addition, the terminal device is also capable of implementing the steps of the method applied to the first device as well as the steps of the method applied to the second device.
In embodiments of the present invention, modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
The exemplary embodiments described above are described with reference to the drawings, and many different forms and embodiments of the invention may be made without departing from the spirit and teaching of the invention, therefore, the invention is not to be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of elements may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.
While the foregoing is directed to the preferred embodiment of the present invention, 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 appended claims.
Claims (24)
1. A transmission method of a measurement signal is applied to a first device, and is characterized by comprising the following steps:
sending a measurement signal to a second device, wherein the measurement signal is used for measurement of a through channel between the first device and the second device, and automatic gain control processing;
wherein sending the measurement signal to the second device comprises:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, the first symbol and the second symbol are one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
2. The method of claim 1, wherein a first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
3. The method of claim 1, wherein the sequence of correlation used for the measurement signal is selected from the group consisting of: m sequence, CG sequence, ZC sequence, PN sequence.
4. A transmission method of a measurement signal is applied to a second device, and is characterized by comprising the following steps:
receiving a measurement signal sent by a first device, wherein the measurement signal is used for measuring a direct channel between the first device and a second device, and performing automatic gain control processing;
the receiving of the measurement signal sent by the first device includes:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
5. The method of claim 4, wherein a first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
6. The method according to claim 4, wherein the sequence of correlation used for the measurement signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
7. The method of claim 4, further comprising, after receiving the measurement signal transmitted by the first device:
and measuring the through channel according to the measuring signal.
8. The method of claim 7, wherein performing the through channel measurement based on the measurement signal comprises:
and based on a preset measurement period or a measurement instruction triggered at the current moment, the measurement signal is utilized to complete the measurement of the through channel.
9. The method of claim 4, further comprising, after receiving the measurement signal transmitted by the first device:
and carrying out automatic gain control processing and estimation of a through channel by using the measurement signal.
10. The method of claim 9, wherein using the measurement signal for automatic gain control processing and estimation of a through channel comprises:
under the condition that the carrier interval of the measurement signal is larger than that of the target data, if the automatic gain control processing period is smaller than the transmission duration of a single measurement signal, after the automatic gain control processing, performing interpolation supplementation on all measurement signals in the same time slot, and finishing channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
11. A terminal device, the terminal device being a first device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the transceiver is used for sending a measurement signal to a second device, wherein the measurement signal is used for measuring a direct channel between the first device and the second device, and automatic gain control processing;
wherein the transceiver is further configured to:
transmitting the measurement signal to the second device through a separate slot before transmitting the target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, the first symbol and the second symbol are one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
12. A terminal device according to claim 11, wherein a first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
13. The terminal device according to claim 11, wherein the sequence with correlation used for the measurement signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
14. A terminal device, the terminal device being a second device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the transceiver is used for receiving a measurement signal sent by a first device, wherein the measurement signal is used for measuring a direct channel between the first device and a second device, and automatic gain control processing;
wherein the transceiver is further configured to:
receiving the measurement signal transmitted through a separate slot before receiving target data, wherein the measurement signal is transmitted using a preset symbol in the slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
15. A terminal device according to claim 14, wherein a first symbol carries one or more of the measurement signals when the measurement signals are transmitted using the first symbol.
16. The terminal device according to claim 14, wherein the sequence with correlation used for the measurement signal is selected from the following sequences: m sequence, CG sequence, ZC sequence, PN sequence.
17. The terminal device of claim 14, wherein the processor is configured to perform a through channel measurement according to the measurement signal.
18. The terminal device according to claim 17, wherein the processor is further configured to complete the measurement of the direct channel by using the measurement signal based on a preset measurement period or a measurement instruction triggered at a current time.
19. The terminal device of claim 14, wherein the processor is further configured to perform automatic gain control processing and estimation of a through channel using the measurement signal.
20. The terminal device of claim 19, wherein the processor is further configured to, in a case that a carrier spacing of the measurement signal is greater than a carrier spacing of the target data, if an agc processing cycle is smaller than a transmission duration of a single measurement signal, perform interpolation compensation on all measurement signals in the same timeslot after the agc processing, and complete channel estimation; if the automatic gain control processing period is longer than the transmission duration of a single measurement signal and shorter than the transmission durations of all measurement signals in the same time slot, performing interpolation supplementation on the measurement signals after automatic gain control processing in the same time slot, and completing channel estimation; if the automatic gain control processing period is longer than the transmission duration of all the measurement signals in the same time slot, the automatic gain control processing is carried out only by using the received measurement signals.
21. A transmission apparatus for measuring signals, applied to a first device, comprising:
a sending module, configured to send a measurement signal to a second device, where the measurement signal is used for measurement of a direct channel between the first device and the second device, and for automatic gain control processing;
the sending module is further configured to send the measurement signal to the second device through a separate time slot before sending the target data, where the measurement signal is transmitted using a preset symbol in the time slot; alternatively, the first and second electrodes may be,
and sending target data and the measurement signal to the second device through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, the measurement signal is sent before the target data, the first symbol and the second symbol are one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
22. A transmission apparatus for measuring signals, applied to a second device, comprising:
a receiving module, configured to receive a measurement signal sent by a first device, where the measurement signal is used for measurement of a direct channel between the first device and a second device, and for automatic gain control processing;
wherein the receiving module is further configured to receive the measurement signal transmitted through a separate time slot before receiving the target data, wherein the measurement signal is transmitted using a preset symbol in the time slot; alternatively, the first and second electrodes may be,
receiving target data and the measurement signal sent through the same time slot, wherein the measurement signal is transmitted by using a first symbol, the target data is transmitted by using a second symbol, and the measurement signal is sent before the target data, the first symbol and the second symbol are both one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in the same time slot, and the subcarrier interval of the first symbol is different from that of the second symbol.
23. 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 in the method of transmission of a measurement signal according to any one of claims 1 to 3.
24. 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 in the method of transmission of a measurement signal according to any one of claims 4 to 10.
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