CN111757446B - Method and equipment for controlling transmission power of uplink channel - Google Patents

Method and equipment for controlling transmission power of uplink channel Download PDF

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CN111757446B
CN111757446B CN201910252306.9A CN201910252306A CN111757446B CN 111757446 B CN111757446 B CN 111757446B CN 201910252306 A CN201910252306 A CN 201910252306A CN 111757446 B CN111757446 B CN 111757446B
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pusch
puschs
value
resource
resource quantity
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CN111757446A (en
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闫志宇
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China Academy of Information and Communications Technology CAICT
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China Academy of Information and Communications Technology CAICT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

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

Abstract

The application discloses a method and a device for controlling the sending power of an uplink channel, wherein the method comprises the following steps: receiving control information, wherein the control information is used for determining N PUSCHs for repeatedly sending uplink service transmission blocks; and determining the information transmission rate of the ith PUSCH by taking the resource quantity value of at least 1 PUSCH as a reference value, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N. And adjusting the transmission power of the ith PUSCH according to the information transmission rate. The application also comprises a terminal device for realizing the uplink channel transmission power control, which comprises a receiving module, a processing module and a transmitting module. The method and the device can solve the problem that the uplink service transmission block is repeatedly transmitted by the PUSCH for multiple times, and have N of at least 2 PUSCHsREWhen the PUSCH power is not equal to the PUSCH power, the PUSCH power is determined for multiple times.

Description

Method and equipment for controlling transmission power of uplink channel
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and a device for controlling uplink channel transmit power.
Background
Uplink power control in a wireless system is very important, and through uplink power control, the UE in a cell can ensure the quality of uplink transmitted data, reduce interference to other users in the system as much as possible, and prolong the service time of a UE battery.
Rel.16 NR System support reliability requirements 1-10-6And the time delay requires URLLC service of less than 0.5 ms. To meet URLLC service requirements, 1 transport block (transport block) is repeatedly transmitted in multiple PUSCHs. By using repeated transmission of the PUSCH, on one hand, the transmission reliability can be improved, and on the other hand, the requirement that the receiving equipment acquires the PUSCH initial demodulation result as early as possible can be met.
When the transmission is repeated, the transmission blocks transmitted by the N PUSCHs are the same, but the N PUSCHs respectively correspond to the NREThe (number of resource units) value is different. How to determine the respective transmission power adjustment amount of the repeatedly transmitted PUSCH is not a solution at present.
Disclosure of Invention
The invention provides a method and a device for controlling the sending power of an uplink channel, which solve the problem that when an uplink service transmission block is repeatedly transmitted by a PUSCH for multiple times, at least two uplink service transmission blocks are availableN of PUSCHREWhen the PUSCH power is not equal to the PUSCH power, the PUSCH power is determined for multiple times.
The embodiment of the application provides a method for controlling the transmission power of an uplink channel, which comprises the following steps:
receiving control information, wherein the control information is used for determining N PUSCHs for repeatedly sending uplink service transmission blocks;
and determining the information transmission rate of the ith PUSCH by taking the resource quantity value of at least 1 PUSCH as a reference value, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N.
In one aspect, as a preferred embodiment of the method of the present invention, the reference values are: the actual resource quantity value occupied by the jth PUSCH, or an average value of the actual resource quantity values occupied by the N PUSCHs, or a sum of the actual resource quantity values occupied by the N PUSCHs.
Wherein, the j number value of resources actually occupied by PUSCH
Figure BDA0002012697440000021
Figure BDA0002012697440000022
Wherein M isRB(j) The number of frequency domain resource blocks occupied by the jth PUSCH; n is a radical ofSYMB(j) The number of time domain symbols occupied by the jth PUSCH;
Figure BDA0002012697440000023
is the number of subcarriers within one resource block of symbol l except DMRS and or PTRS; or,
Figure BDA0002012697440000024
is the number of subcarriers within one resource block of symbol l; j is more than or equal to 1 and less than or equal to N.
Further preferably, the parameter values satisfy: n is a radical ofRE(j)＝min[NRE(i)]Or N isRE(j)＝max[NRE(i)]Or j ═ i, where i ═ 1, …, N.
On the other hand, as a preferred embodiment of the method of the present invention, the control information is further configured to determine scheduling resource allocation values of the N PUSCHs; and determining a resource quantity value according to the scheduling resource allocation value.
At this time, preferably, the reference value is: the resource quantity value of the ith PUSCH, or the average value of the resource quantity values of the N PUSCHs, or the sum of the resource quantity values of the N PUSCHs; the resource quantity values here are all generated by scheduling assignments.
Further preferably, the scheduling resource allocation values of the N PUSCHs do not include resource quantity values of DMRSs and/or PTRS in the PUSCH.
In the method according to any of the embodiments of the present application, the method further comprises the steps of:
adjusting the transmission power of the ith PUSCH according to the information transmission rate, for example, when the information transmission rate is increased, increasing the transmission power; when the information transfer rate is lowered, the transmission power is reduced.
In the method according to any embodiment of the present application, the number of resources actually occupied by at least 2 PUSCHs in the N PUSCHs is unequal. Further, at least 2 PUSCH bits are located in the same slot; or, at least 2 of the N PUSCHs are located in different time slots and are adjacent in time.
The embodiment of the application also provides a terminal device, and the method of any embodiment of the application comprises a receiving module, a processing module and a sending module.
And the receiving module is used for receiving the control information and determining N PUSCHs for repeatedly sending the uplink service transmission block.
The processing module takes the resource quantity value of at least 1 PUSCH as a reference value, and determines the information transmission rate of the ith PUSCH, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N;
and the sending module is used for changing the sending power of the ith PUSCH according to the information transmission rate.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
n of at least 2 PUSCHs among N PUSCHs for repeatedly transmitting uplink service transport blocksREWhen the resource quantity values of the jth PUSCH are unequal, on one hand, if the resource quantity value of the jth PUSCH is used or the reference value, the information transmission rate and the transmission power of the ith PUSCH in the N PUSCHs are determined, the transmission power of the ith PUSCH can be more adaptive to the actual modulation coding rate of an uplink service transmission block transmitted by the PUSCH, and the transmission performance of the service transmission block and the spectral efficiency of a system are improved; on the other hand, if the reference value, information transfer rate, and transmission power of the ith PUSCH among the N PUSCHs are determined with the average or sum of the resource quantity values of the N PUSCHs, it is advantageous to share the DMRS among the N PUSCHs, and to smooth transmission power of the terminal device, and the like. Further, if the resource quantity values of the N PUSCHs are determined by the control information, it can be avoided that the expectation of the target transmission power adjustment amount determined by the network device for the terminal device is different from the target transmission power adjustment amount actually determined by the terminal device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a diagram illustrating that each PUSCH power adjustment value is determined according to a resource quantity value occupied by a PUSCH;
fig. 2 is a diagram illustrating that each PUSCH power adjustment value is determined according to the number of resources indicated by the PUSCH;
fig. 3 is a first application scenario of multiple PUSCH retransmissions in the present application;
fig. 4 is a second application scenario of multiple PUSCH retransmissions in the present application;
fig. 5 is a third application scenario of multiple PUSCH retransmissions in the present application;
fig. 6 is a schematic diagram of a terminal device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
N of at least 2 PUSCHs when PUSCHs repeatedly transmit uplink service dataREWhen the uplink transmission power is not equal to the preset value, the terminal equipment acquires the control information, determines the uplink service transmission block repeatedly transmitted in the N PUSCHs according to the control information, then determines the respective information transmission rate of the N PUSCHs according to the resource quantity value and the size of the uplink service transmission block, and further adjusts the respective transmission power of the N PUSCHs according to the information transmission rate, so that the transmission power requirement and efficiency of repeated transmission of the PUSCHs can be met.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an embodiment of a method for determining each PUSCH power adjustment value according to an actual amount of resources occupied by a PUSCH.
The embodiment of the application provides a method for controlling the transmission power of an uplink channel, which comprises the following steps:
step 101, receiving control information, where the control information is used to determine N PUSCHs that repeatedly send uplink service transport blocks.
The PUSCH is divided into 2 types: in type 1, a network device sends Downlink Control Information (DCI) to schedule a PUSCH sent by a terminal device, which is dynamic grant scheduling. And 2, the network equipment semi-statically configures the PUSCH transmitted by the terminal equipment, that is, the network equipment instructs the terminal equipment to transmit the PUSCH in an authorization-free scheduling mode. According to 3GPP ts38.331.v20, section 6.3.2, type 1, the terminal device may transmit uplink data on these resources according to configured RRC signaling. In type 2, after receiving the configured RRC signaling, the terminal device may transmit uplink data on the resources if the PDCCH receiving the CS-RNTI scrambled CRC check bits activates the resources.
In this embodiment, the terminal device obtains the control information, and determines to repeatedly send the uplink service transport block in the N PUSCHs according to the control information. The control information may be, for example, physical downlink control information that implements dynamic grant scheduling. The physical downlink control information is used for scheduling the terminal device to repeatedly send the uplink service transmission block in the N PUSCHs, or used for activating the preconfigured PUSCH configuration resource of type 2. The control information may also be, for example, higher layer signaling for configuring PUSCH configuration resources of type 1.
According to the control information, the terminal equipment determines that the uplink service transmission block is repeatedly sent in N PUSCHs, and the size of the uplink service transmission block is S for example1A bit. The resource amount actually used for the uplink service transmission block in the N PUSCHs may not be the same, for example, the resource amount value actually occupied by at least 2 PUSCHs in the N PUSCHs is not equal, the N PUSCHs include a first PUSCH and a second PUSCH, and the number of symbols included in the first PUSCH and the second PUSCH are different. Further, at least 2 PUSCH bits of the N PUSCHs may be located in the same slot, for example, the first PUSCH and the second PUSCH are located in the same slot; it may also be that at least 2 of the N PUSCHs are located in different slots and are adjacent in time, for example, the first PUSCH and the second PUSCH are located in different slots and the last 1 symbol of the first PUSCH and the 1 st symbol of the second PUSCH are adjacent in time.
And step 102, determining the information transmission rate of the ith PUSCH by taking the resource quantity value of at least 1 PUSCH as a reference value, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N.
Assuming that the number of resource units used by the ith PUSCH in the N PUSCHs for sending the uplink service transmission block is NRE(i) I is more than or equal to 1 and less than or equal to N, and the information transmission rate is determined first to determine the respective transmission power of the N PUSCHs.
As an optional embodiment, the reference value is a value of the number of resources actually occupied by the jth PUSCH. Wherein, the actual resource quantity value occupied by the jth PUSCH is as follows:
Figure BDA0002012697440000051
wherein M isRB(j) The number of frequency domain resource blocks occupied by the jth PUSCH; n is a radical ofSYMB(j) The number of time domain symbols occupied by the jth PUSCH;
Figure BDA0002012697440000061
is the number of subcarriers within one resource block of symbol l except DMRS and or PTRS; or,
Figure BDA0002012697440000062
is the number of subcarriers within one resource block of symbol l; j is more than or equal to 1 and less than or equal to N. In addition, the range of j includes j ═ i.
And when j is equal to i, determining the information transmission rate of the jth PUSCH according to the resource quantity value of the jth PUSCH in the N PUSCHs, and further determining the power adjustment quantity of the jth PUSCH according to the step 103. In this way, the power adjustment amount of the jth PUSCH and the modulation and coding rate actually used by the jth PUSCH are adapted most appropriately from the viewpoint of the reception performance and power efficiency of the jth PUSCH.
Optionally, the value of j is preset, for example, j ═ 1.
Further preferably, the parameter values satisfy: n is a radical ofRE(j)＝min[NRE(i)]Or NRE(j)＝max[NRE(i)]Wherein i is 1, …, N; that is, j corresponds to the largest one of the occupied time and frequency resources among the N PUSCHs; or j corresponds to the minimum occupied time and frequency resource of the N PUSCHs.
When the number of subcarriers does not consider the DMRS and/or the PTRS, the parameter value reduces the influence of the DMRS and/or the PTRS in the N PUSCHs on the occupied resource quantity.
Determining a resource quantity value N according to the total number of the resource units included in the N PUSCHsREAnd then determining the information transmission rate of each PUSCH in the N PUSCHs according to the resource quantity value. Assuming that the N PUSCHs are co-comprised in the frequency domain
Figure BDA0002012697440000063
For each RB, the total number of resource elements included in the N PUSCHs may also be calculated with reference to formula (1). According to the NREAnd determining the information transmission rate of each PUSCH in the N PUSCHs, and further determining the power adjustment amount of each PUSCH according to step 103. The value of the number of resources determined by the time and frequency resources occupied by the N PUSCHs is constant, based on the NREAnd the value determines that the information transmission rate of each PUSCH in the N PUSCHs is the same, so that the power adjustment amount is consistent. Therefore, the DMRS can be shared among the N PUSCHs, and the terminal equipment can smoothly transmit power.
As an optional another embodiment, the reference value may also be an average value of the number of resources actually occupied by the N PUSCHs.
Step 103, adjusting the transmission power of the ith PUSCH according to the information transmission rate, for example, increasing the transmission power when the information transmission rate is increased; when the information transfer rate is lowered, the transmission power is reduced.
The transmission power P of the terminal device is determined by a plurality of factors, and the information transfer rate is one of the factors. The information transmission rate is determined according to the size of the uplink service transmission block transmitted in the PUSCH and the resource quantity value N of the PUSCHREAnd (4) determining. Besides, the power P of the PUSCH transmitted by the terminal device is also related to factors such as path loss, path compensation factor, power adjustment control command word transmitted in downlink control information, and operating point of open-loop transmission power control. According to the above steps 101 to 102, the terminal device can determine the respective information transfer rates of the N PUSCHs. The terminal device may determine the respective transmission powers of the N PUSCHs based on the respective information transfer rates of the N PUSCHs and the respective other transmission power determining factors.
For example, chapter 7 of 3GPP TS38213 Vf40 relates to NR giving a way of determining the transmission power of the uplink channel of a system, calculating the power variation by the information transfer rate. On the service cell c of the carrier f, the transmission power P of the PUSCH at the ith transmission moment on the uplink BWP b corresponding to the power configuration set parameter index jPUSCH，b，f，c(i，j，qdL) comprisesTF，b，f，cThe term, we refer to the amount of power adjustment. For example,
the information transfer rate is defined as:
Figure BDA0002012697440000071
in formula 2, C denotes the number of Code Blocks (CBs) transmitted on the PUSCH, KrIs the size of the code block r, in the present invention, the number of bits of the uplink traffic transport block can be used. By the number of resource units NREAs a resource quantity value. The information transmission rate is determined according to the size of the uplink service transmission block transmitted in the PUSCH and the resource quantity value N of the PUSCHREAnd (4) determining.
The application does not limit the ratio between the power adjustment value and the information transmission rate. As an example, for example, the 3GPP TS38213 Vf40 standard includes a relationship:
Figure BDA0002012697440000072
KSwhen becoming 1.25 (3)
Wherein,
Figure BDA0002012697440000073
and KSThe value of (b) is configured by the network device to the terminal device.
And finally, the terminal equipment transmits the N PUSCHs according to the respective transmission power of the N PUSCHs.
Fig. 2 is a flowchart of an embodiment of a method for determining each PUSCH power adjustment value according to the number of resources indicated by the PUSCH.
Step 201, receiving control information, and determining the PUSCH of N for repeatedly sending the uplink service transport block according to the control information.
The control information is used for determining N PUSCHs for repeatedly sending the uplink service transmission block.
Step 202, determining scheduling resource allocation values of the N PUSCHs according to the control information.
As a preferred embodiment of the method of the present invention, the control information is further configured to determine scheduling resource allocation values of N PUSCHs;
and determining a resource quantity value according to a resource allocation field of a PUSCH in the control information, and then determining the information transmission rate of each PUSCH in N PUSCHs according to the resource quantity value. Assuming that the PUSCH resource allocation field of the control information indicates that the PUSCH is included in the frequency domain
Figure BDA0002012697440000081
A plurality of RBs including in time domain
Figure BDA0002012697440000082
A symbol. Then according to
Figure BDA0002012697440000083
And
Figure BDA0002012697440000084
a resource quantity value is determined.
Figure BDA0002012697440000085
At this time, the resource amount value is an allocated resource amount value rather than an actually occupied resource amount value.
The resource allocation field of the PUSCH in the control information may directly indicate the starting symbols and the whole length of the N PUSCHs; the resource allocation field of the PUSCH in the control information may also be a value indicating the starting symbol and overall length of the first PUSCH, and N; alternatively, the resource allocation field of the PUSCH in the control information may also indicate the respective starting symbol lengths of the N PUSCHs. The resource allocation field of the PUSCH in the control information determines the resource quantity value, which may be determined according to part or all of the resource allocation field of the PUSCH. For example, if the resource allocation field of the PUSCH in the control information indicates the starting symbol and the overall length of the first PUSCH and the value of N, the resource quantity value may be determined according to the starting symbol and the overall length of the first PUSCH or may be determined according to the starting symbol and the overall length of the first PUSCH and the value of N. It is specifically determined whether the resource quantity value is preset using part or all of the resource allocation field of the PUSCH.
And 203, determining the information transmission rate of the ith PUSCH by taking the resource quantity value of at least 1 PUSCH as a reference value, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N.
Assuming that the number of resource units used by the ith PUSCH in the N PUSCHs for sending the uplink service transmission block is NRE(i) Determining the power adjustment amount Delta in the transmission power of each of the N PUSCHsTF，b，f，cA resource quantity value may first be determined based on the scheduled resource allocation value.
It should be noted that: the network device may affect the resource actually occupied by the ith PUSCH in the N PUSCHs for the symbol uplink/downlink configuration during the N PUSCH transmissions. For example, the control information indicates that the first transmission block of the PUSCH is transmitted at the 5 th to 14 th symbols of the Slot n, but at this time, the network device indicates that the 12 th to 14 th symbols of the Slot n are downlink through SFI (Slot format indication) information, and then the first PUSCH actually occupies only the 5 th to 11 th symbols of the Slot n. If the resource quantity value is determined by the actual resource quantity of the first PUSCH, in the case that the SFI sent by the network device is not correctly received at the terminal device side, the expectation of the information transfer rate determined by the network device for the terminal device is different from the information transfer rate actually determined by the terminal device, which causes improper transmission power adjustment of the network device for the terminal device, resulting in poor system efficiency. In contrast, if the resource quantity value is determined by using the resource allocation field of the PUSCH in the control information, it is possible to avoid that the expectation of the information transmission rate determined by the network device for the terminal device is different from the information transmission rate actually determined by the terminal device.
At this time, preferably, the reference value is: the resource quantity value of the jth PUSCH allocation, or the average value of the resource quantity values of the N PUSCHs allocation, or the sum of the resource quantity values of the N PUSCHs allocation.
When the reference value is the resource quantity value allocated to the jth PUSCH, it is further preferable that the reference value is subtracted from the resource quantity value allocated to the DMRS and/or PTRS in the jth PUSCH.
When the reference value is the sum of the resource quantity values allocated to the N PUSCHs, it is further preferable that the reference value does not include the resource quantity values allocated to the DMRS and/or PTRS in the N PUSCHs.
E.g. resource quantity values
Figure BDA0002012697440000091
According to the NREThe value determines an information transfer rate of each of the N PUSCHs. As another example, resource quantity values
Figure BDA0002012697440000092
Figure BDA0002012697440000094
Wherein
Figure BDA0002012697440000093
The load of DMRS and PTRS indicated by the control information, respectively. The load of the DMRS comprises the DMRS of the terminal equipment for demodulating PUSCH and the DMRS load of other terminal equipment for multiplexing resources with the terminal equipment. According to the NREThe value determines an information transfer rate of each of the N PUSCHs.
Since N PUSCHs are indicated by the same control information, according to the NREThe value determines that information transmission rates of individual PUSCHs of the N PUSCHs are the same. Therefore, the DMRS can be shared among the N PUSCHs, and the terminal equipment can smoothly transmit power.
Step 204, adjusting the transmission power of the ith PUSCH according to the information transmission rate, for example, increasing the transmission power when the information transmission rate is increased; when the information transfer rate is lowered, the transmission power is reduced.
In step 204, a power adjustment amount, such as Δ of equation (3), is further calculated according to the information transfer rate, such as the BPRE shown in equation (2)TF，b，f，c。
Fig. 3 is a first PUSCH application scenario for retransmitting service data according to the present invention. The 1-time uplink scheduling grant indicates repeated transmission of the PUSCH for multiple times, 2 or more PUSCH repetitions may be present in 1 slot, or multiple PUSCH repetitions may cross a slot boundary between adjacent slots, but each 1-time PUSCH transmission in the multiple PUSCH repeated transmissions cannot cross a slot boundary, which is also referred to as Mini-slot level repetition (Mini-slot level repetition).
And if the starting symbol of the uplink scheduling authorization scheduling PUSCH is positioned in the S-th symbol of the time slot N, the time length of the scheduled PUSCH is L symbols, and the terminal equipment is repeatedly transmitted with the uplink scheduling authorization for N times. If a symbol of S + (X-1). times.L, 1. ltoreq. X.ltoreq.N crosses the boundary of 2 adjacent slots, the S + (X-1). times.L symbols are divided into 2 parts bounded by the boundary of the 2 slots, and the part before the slot boundary in the 2 parts is called an "isolated symbol". In the figure, 1 uplink scheduling grant schedules 6 repeated transmissions of PUSCH. Currently, 14 symbols are included in 1 slot, and if the time domain of the PUSCH indicated by the uplink scheduling grant includes 4 symbols, after 3 repeated transmissions, only 2 symbols remain in the current slot, which is not enough to support 1 PUSCH repeated transmission. The 2 symbols are "isolated symbols".
At least 2 PUSCHs of the N are located in the same time slot. For example, the N PUSCH transmissions employ a mini slot level repetition mode, and if the terminal device can send the PUSCH on an isolated symbol, and the number of the isolated symbol is different from the number of symbols included in a repeated mini slot, the number of resource units used for sending uplink service transport blocks for each of the N PUSCHs is at least 2 different.
Fig. 4 shows a PUSCH application scenario two for retransmitting service data according to the present invention. The 1 uplink scheduling grant indicates 2 or more PUSCH transmissions in adjacent slots, with only 1 PUSCH transmission in each slot. This type of repetitive transmission is also called Multi-segment transmission (Multi-segment transmission). The starting symbol position and/or length of each repeated transmission may be different.
And scheduling the time starting point and the length of the PUSCH by the 1-time uplink scheduling authorization, wherein the time domain resource determined by the time and the length of the PUSCH is positioned in the adjacent 2 time slots. Because 1 time of PUSCH transmission can not cross the time slot boundary, according to the uplink scheduling authorization, the terminal equipment repeatedly sends the PUSCH for 2 times in 2 time slots. Each PUSCH is referred to as 1 PUSCH segment, and each PUSCH segment is used to transmit a transport block for PUSCH 1 time.
The first and second PUSCHs are located in different slots, and the last 1 symbol of the first PUSCH and the 1 st symbol of the second PUSCH are adjacent in time. For example, N PUSCH transmissions employ multi-segment transmissions, and the number of resource elements used for transmitting uplink traffic transport blocks for each of the N PUSCHs may be different.
Fig. 5 shows a third PUSCH application scenario for retransmitting service data according to the present invention. As another example, if the time resource alternatives are preset. Each 1 entry of the time resource alternatives includes the symbol start position and length used for each 1 PUSCH transmission among N, N repetitions of the PUSCH transmission. And indicating the time resource alternative index corresponding to the PUSCH through the control information. Through the alternative index, the terminal device may determine the number of repetitions of the scheduled repeated PUSCH, the symbol position and length used for each transmission, and the like. In this way, the number of resource elements used by each of the N PUSCHs to transmit the uplink traffic transport block may be different.
And presetting time resource candidates. Each 1 entry of the time resource alternatives includes a symbol starting position and length (SLIV) used for each 1 PUSCH transmission of N, N repetitions of a PUSCH transmission. And indicating the time resource alternative index corresponding to the PUSCH through the scheduling information. Through the alternative index, the terminal device may determine the number of repetitions of the scheduled repeated PUSCH, the symbol position and length used for each transmission, and the like.
The PUSCH repeated transmission may be any one or any combination of the three manners shown in fig. 3 to 5, or may be in other manners.
Fig. 6 is a schematic diagram of a terminal device.
The embodiment of the present application further provides a terminal device, and the method according to any one of the embodiments of the present application includes a receiving module 61, a processing module 62, and a sending module 63.
And the receiving module is used for receiving the control information and determining N PUSCHs for repeatedly sending the uplink service transmission block.
The processing module takes the resource quantity value of at least 1 PUSCH as a reference value, and determines the information transmission rate of the ith PUSCH, wherein the information transmission rate is inversely proportional to the reference value and is directly proportional to the bit number of the transmission block, N is more than or equal to 2, and i is more than or equal to 1 and less than or equal to N;
and the sending module is used for changing the sending power of the ith PUSCH according to the information transmission rate and finally sending the PUSCH.
In the terminal device, the reference value determined by the processing module is: j is more than or equal to 1 and less than or equal to N of the number value of resources actually occupied by the jth PUSCH; or, an average value of the number of resources actually occupied by the N PUSCHs; or, the sum of the resource quantity values actually occupied by the N PUSCHs.
A resource quantity value actually occupied by the jth PUSCH in the N PUSCHs
Figure BDA0002012697440000121
Figure BDA0002012697440000122
Wherein M isRB(j) The number of frequency domain resource blocks occupied by the jth PUSCH; n is a radical ofSYMB(j) The number of time domain symbols occupied by the jth PUSCH;
Figure BDA0002012697440000123
is the number of subcarriers within one resource block of symbol l except DMRS and or PTRS; or,
Figure BDA0002012697440000124
is the number of subcarriers within one resource block of symbol l; j is more than or equal to 1 and less than or equal to N.
Preferably, the parameter values determined by the processing module satisfy: n is a radical ofRE(j)＝min[NRE(i)]Or N isRE(j)＝max[NRE(i)]Or j ═ i, where i ═ 1, …, N.
As another embodiment of the terminal device processing control information, the receiving module further determines scheduling resource allocation values of the N PUSCHs according to the control information; the processing module is further configured to determine the resource quantity value according to the scheduling resource allocation value. At this time, the reference value determined by the determination module is: a resource quantity value of an ith PUSCH indicated by the control information; or, an average value of the resource quantity values of the N PUSCHs indicated by the control information; or the sum of the resource quantity values of the N PUSCHs indicated by the control information. Further preferably, the scheduling resource allocation values of the N PUSCHs do not include resource quantity values of DMRSs and/or PTRS in the PUSCH.
Preferably, in the terminal device, the process of changing the transmission power of the ith PUSCH according to the information transfer rate by the transmission module is as follows: when the information transmission rate is increased, the sending power is increased; when the information transfer rate is lowered, the transmission power is reduced.
It should be further noted that, in the terminal device, the number of resources actually occupied by at least 2 PUSCHs in the N PUSCHs is unequal. For example, at least 2 PUSCH bits are located in the same slot; or, at least 2 of the N PUSCHs are located in different time slots and are adjacent in time.
Other working processes of the device of this embodiment, as described in steps 101 to 103, 201 to 204 in this application document, are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should also be noted that 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (18)

1. A method for controlling uplink channel transmission power, comprising the steps of:
receiving control information, wherein the control information is used for determining N PUSCHs for repeatedly sending uplink service transmission blocks; the number value of resources actually occupied by at least 2 PUSCHs in the N PUSCHs is unequal;
determining information transmission rates of the N PUSCHs with a resource quantity value of at least 1 PUSCH as a reference value, the information transmission rates being inversely proportional to the reference valueAdjusting the second bit rate in proportion to the number of bits of the transport block according to the information transfer rateiThe transmission power of each PUSCH, wherein N is more than or equal to 2 and less than or equal to 1iAnd N is less than or equal to N, the information transmission rates of the N PUSCHs are the same, and the transmission power adjustment quantity is consistent.
2. The method of claim 1, wherein the reference value is:
first, thejThe number value of resources actually occupied by each PUSCH is not more than 1jN is less than or equal to N; or,
an average value of the number of resources actually occupied by the N PUSCHs; or,
and the sum of the resource quantity values actually occupied by the N PUSCHs.
3. The method of claim 2,
the first of the N PUSCHsjResource quantity value actually occupied by PUSCH
Figure 955929DEST_PATH_IMAGE002
；
Wherein
Figure 404228DEST_PATH_IMAGE004
Is as followsjThe number of frequency domain resource blocks occupied by each PUSCH;
Figure 449544DEST_PATH_IMAGE006
is as followsjThe number of time domain symbols occupied by the PUSCHs;
Figure 110333DEST_PATH_IMAGE008
is a symbol
Figure 190284DEST_PATH_IMAGE010
The number of subcarriers other than DMRS and/or PTRS within one resource block; or,
Figure 278326DEST_PATH_IMAGE012
is a symbol
Figure 76518DEST_PATH_IMAGE010
The number of subcarriers within one resource block;
1≤j≤N。
4. the method of claim 2, wherein the reference value satisfies:
N RE (j)=min[N RE (i)]or is orN RE (j)=max[N RE (i)]Or is orj=iWhereini=1，…，N。
5. The method of claim 1, further comprising the steps of:
the control information is further used for determining scheduling resource allocation values of the N PUSCHs;
and determining the resource quantity value according to the scheduling resource allocation value.
6. The method of claim 5, wherein the reference value is:
the control information indicatesiA resource quantity value of each PUSCH; or,
an average value of resource quantity values of N PUSCHs indicated by the control information; or,
a sum of resource quantity values of the N PUSCHs indicated by the control information.
7. The method of claim 5, wherein the scheduling resource allocation values of the N PUSCHs do not include resource quantity values of DMRS and/or PTRS in PUSCHs.
8. The method of claim 1,
at least 2 PUSCHs of the N are positioned in the same time slot; or,
at least 2 of the N PUSCHs are located in different slots and are adjacent in time.
9. The method according to any of claims 1 to 8, wherein the second step is adjusted according to the information transfer rateiThe transmission power of each PUSCH comprises the following steps:
when the information transmission rate is increased, the sending power is increased;
when the information transfer rate is lowered, the transmission power is reduced.
10. A terminal device, configured to implement the method according to any one of claims 1 to 9, and comprising a receiving module, a processing module, and a sending module;
the receiving module is configured to receive the control information and determine N PUSCHs of the repeated uplink service transport block;
the processing module takes the resource quantity value of at least 1 PUSCH as a reference value to determine the first timeiInformation transmission rate of each PUSCH, the information transmission rate being inversely proportional to the reference value, wherein N is greater than or equal to 2, and 1 is less than or equal toi≤N；
The sending module is used for changing the second time according to the information transmission rateiTransmission power of each PUSCH.
11. The terminal device of claim 10, wherein the reference value is:
first, thejThe number value of resources actually occupied by each PUSCH is not more than 1jN is less than or equal to N; or,
an average value of the number of resources actually occupied by the N PUSCHs; or,
and the sum of the resource quantity values actually occupied by the N PUSCHs.
12. The terminal device of claim 11,
the first of the N PUSCHsjResource quantity value actually occupied by PUSCH
Figure 540997DEST_PATH_IMAGE014
；
Wherein
Figure DEST_PATH_IMAGE016
Is as followsjThe number of frequency domain resource blocks occupied by each PUSCH;
Figure DEST_PATH_IMAGE018
is as followsjThe number of time domain symbols occupied by the PUSCHs;
Figure DEST_PATH_IMAGE020
is a symbol
Figure DEST_PATH_IMAGE022
The number of subcarriers other than DMRS and/or PTRS within one resource block; or,
Figure DEST_PATH_IMAGE024
is a symbol
Figure 68930DEST_PATH_IMAGE022
The number of subcarriers within one resource block;
1≤j≤N。
13. the terminal device of claim 11, wherein the reference value satisfies:
N RE (j)=min[N RE (i)]or is orN RE (j)=max[N RE (i)]Or is orj=iWhereini=1，…，N。
14. The terminal device of claim 10,
the receiving module further determines scheduling resource allocation values of the N PUSCHs according to the control information;
the processing module is further configured to determine the resource quantity value according to the scheduling resource allocation value.
15. The terminal device of claim 14, wherein the reference value is:
the control information indicatesiA resource quantity value of each PUSCH; or,
an average value of resource quantity values of N PUSCHs indicated by the control information; or,
a sum of resource quantity values of the N PUSCHs indicated by the control information.
16. The terminal device of claim 14, wherein the scheduling resource allocation values of the N PUSCHs do not include resource quantity values of DMRS and/or PTRS in PUSCH.
17. The terminal device of claim 10,
at least 2 PUSCHs of the N are positioned in the same time slot; or,
at least 2 of the N PUSCHs are located in different slots and are adjacent in time.
18. The terminal device according to any one of claims 10 to 17,
the sending module changes the second according to the information transmission rateiThe procedure of the transmission power of each PUSCH is as follows: when the information transmission rate is increased, the sending power is increased; when the information transfer rate is lowered, the transmission power is reduced.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105282837A (en) * 2014-06-12 2016-01-27 中兴通讯股份有限公司 Power control method, user equipment, base station, and power control system
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US9762356B2 (en) * 2012-01-24 2017-09-12 Interdigital Patent Holdings, Inc. Systems and methods for improved uplink coverage
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US20190372719A1 (en) * 2017-03-07 2019-12-05 Intel IP Corporation Design of downlink control information for wideband coverage enhancement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105282837A (en) * 2014-06-12 2016-01-27 中兴通讯股份有限公司 Power control method, user equipment, base station, and power control system
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