Side chain power allocation method and device supporting PRS, storage medium, and terminal

Abstract

A side chain power allocation method supporting PRS, the method comprising the following steps: CMAX , P MAX,CBR and P PRS,SL (i) determining the basic transmission power of the PRS; allocating the PRS transmission power to the PRS, and the PRS transmission power is greater than or equal to the basic transmission power of the PRS. The present invention can effectively improve the balance of power allocation and at least meet the basic power requirements of the PRS.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a side chain power allocation method and device supporting PRS, a storage medium, and a terminal. Background Art

[0002] In the 16th version (R16) of the protocol, the research on the New Radio (NR) sidelink was introduced, which is mainly applicable to vehicle communication scenarios. In addition, the R16 protocol also introduced positioning research for the NR air interface Uu.

[0003] Due to the needs of V2X communication, it is very likely that positioning research will be conducted on the auxiliary link in the future. Specifically, there may be a distinction between relative positioning and absolute positioning. In addition, for the communication scenarios of the auxiliary link, there will also be separate discussions in the In Coverage (IC) scenario, the Partial Coverage (PC) scenario, and the Out of Coverage (OC) scenario.

[0004] There are many candidate positioning technologies that can be used on the auxiliary link, including but not limited to: enhanced cell ID positioning (E-CID), cell-based signal round trip time (RTT), signal arrival time difference (TDOA), arrival angle measurement (AoA), departure angle measurement (AoD) and other methods, as well as indoor positioning technologies such as observed arrival time difference (OTDOA) and uplink arrival time difference (UTDOA) based on multiple base stations for positioning, positioning based on multiple round trip time measurements (multi-RTT). Furthermore, no matter which positioning technology is used, it is likely that the design of the auxiliary link positioning reference signal (PRS) will need to be introduced.

[0005] Specifically, in the existing auxiliary link technology, PRS can be supported to be transmitted simultaneously with multiple signals, for example, signals carried by one or more of the following channels based on frequency division multiplexing (FDM): physical sidelink control channel (Pysical Sidelink Control Channel, PSCCH), physical sidelink shared channel (Pysical Sidelink Share Channel, PSSCH), physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH).

[0006] However, in the prior art, the allocated power often has an upper limit, and it is difficult to ensure that all signals are allocated to the upper limit. Therefore, when power is limited, the efficiency and accuracy of signal transmission are easily reduced due to unbalanced allocation.

[0007] There is an urgent need for a side chain power allocation method that supports PRS to improve the balance of power allocation and meet the basic power requirements of various signals. Summary of the invention

[0008] The technical problem solved by the present invention is to provide a side chain power allocation method supporting PRS, which can effectively improve the balance of power allocation and at least meet the basic power requirements of PRS.

[0009] In order to solve the above technical problems, an embodiment of the present invention provides a side chain power allocation method supporting PRS, comprising the following steps: CMAX , P MAX,CBR and P PRS,SL (i), determining a basic transmit power of a PRS; allocating a PRS transmit power to the PRS, and the PRS transmit power is greater than or equal to the basic transmit power of the PRS; wherein P CMAX It is used to indicate the maximum transmit power of the terminal. MAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR, P PRS,SL (i) is used to indicate the path loss compensation power of the PRS when the PRS is sent at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity.

[0010] Optionally, the basic transmit power of the PRS is determined using the following formula:

[0011] P PRS (i) = min(P CMAX ,P MAX,CBR ,P PRS,SL (i))

[0012] Among them, P PRS (i) is used to represent the basic transmission power of PRS when the PRS is transmitted at the i-th positioning opportunity.

[0013] Optionally, use the following formula to determine P PRS,SL (i)

[0014]

[0015] or,

[0016]

[0017] Among them, P PRS,SL(i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P O,PRS It is used to indicate the power that the terminal expects to receive PRS, and μ is used to indicate the subcarrier bandwidth and CP type of PRS. It is used to indicate the number of RBs that send PRS when the PRS is sent at the i-th positioning opportunity. Combsize is used to indicate the frequency domain density of the auxiliary link PRS. PRS The PRS adjustment factor, PL, used to adjust the transmission power of the PRS PRS Used to indicate the path loss compensation power of PRS.

[0018] Optionally, after determining the basic transmit power of PRS, the side chain power allocation method supporting PRS also includes: determining the basic transmit power of PSSCH and / or PSCCH; allocating transmit power to the PSSCH and / or PSCCH; wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH, and the transmit power allocated to the PSCCH is greater than or equal to the basic transmit power of the PSCCH.

[0019] Optionally, allocating transmit power to the PSSCH and PSCCH includes: first allocating transmit power to the PSSCH, and then allocating transmit power to the PSCCH; or, first allocating transmit power to the PSCCH, and then allocating transmit power to the PSSCH.

[0020] Optionally, if the transmit power is allocated to the PSSCH first and then to the PSCCH, the following formula is used to determine the basic transmit power of the PSSCH:

[0021] P PSSCH (i) = min(min(P CMAX ,P MAX,CBR )-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (i)))

[0022] Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmit power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity. The basic transmit power of PSCCH is determined by the following formula:

[0023]

[0024] or,

[0025]

[0026] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0027] Optionally, if the transmit power is allocated to the PSCCH first and then to the PSSCH, the following formula is used to determine the basic transmit power of the PSCCH:

[0028]

[0029] or,

[0030]

[0031] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to represent the basic transmit power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity. The basic transmit power of PSSCH is determined by the following formula:

[0032] P PSSCH (i) = min(min(P CMAX ,P MAX,CBR )-P PSSCH (i)-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (i)))

[0033] Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, PPSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0034] Optionally, use the following formula to determine P PSSCH,D (i) and P PSSCH,SL (i)

[0035]

[0036]

[0037] Among them, P O,D Used to indicate the power that the base station expects to receive from PSSCH. It is used to indicate the number of RBs that send PSSCH when sending PSSCH at the i-th positioning opportunity. D The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH D Used to indicate the path loss compensation power of PSSCH; P O,SL Used to indicate the power that the base station expects to receive from PSSCH, α SL The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH SL Used to indicate the path loss compensation power of PSSCH.

[0038] Optionally, before determining the basic transmit power of PRS, the side chain power allocation method supporting PRS also includes: determining the basic transmit power of PSSCH; allocating transmit power to the PSSCH; wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH.

[0039] Optionally, the basic transmit power of the PRS is determined using the following formula:

[0040] P PRS (i) = min(min(P CMAX ,P MAX,CBR )-P PSSCH (i),P PRS,SL (i))

[0041] Among them, P PRS (i) is used to indicate the basic transmission power of PRS when sending PRS at the i-th positioning opportunity, P CMAX It is used to indicate the maximum transmit power of the terminal. MAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR, PPRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity.

[0042] Optionally, use the following formula to determine P PRS,SL (i)

[0043]

[0044] or,

[0045]

[0046] Among them, P PRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P O,PRS It is used to indicate the power that the terminal expects to receive PRS, and μ is used to indicate the subcarrier bandwidth and CP type of PRS. It is used to indicate the number of RBs that send PRS when the PRS is sent at the i-th positioning opportunity. Combsize is used to indicate the frequency domain density of the auxiliary link PRS. PRS The PRS adjustment factor, PL, used to adjust the transmission power of the PRS PRS Used to indicate the path loss compensation power of PRS.

[0047] Optionally, the following formula is used to determine the basic transmit power of PSSCH:

[0048] P PSSCH (i) = min(P CMAX ,P MAX,CBR ,min(P PSSCH,D (i),P PSSCH,SL (i)))

[0049] Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0050] Optionally, after determining the basic transmit power of PRS, the side chain power allocation method supporting PRS also includes: determining the basic transmit power of PSCCH; allocating transmit power to the PSCCH; wherein the transmit power allocated to the PSCCH is greater than or equal to the basic transmit power of the PSCCH.

[0051] Optionally, the following formula is used to determine the basic transmit power of the PSCCH:

[0052]

[0053] or,

[0054]

[0055] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0056] In order to solve the above technical problems, an embodiment of the present invention provides a side chain power allocation device supporting PRS, comprising: a power determination module for determining a power distribution device according to P CMAX , P MAX,CBR and P PRS,SL (i) determining a basic transmit power of a PRS; a power allocation module, configured to allocate a PRS transmit power to the PRS, wherein the PRS transmit power is greater than or equal to the basic transmit power of the PRS.

[0057] In order to solve the above technical problem, an embodiment of the present invention provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above side chain power allocation method supporting PRS are executed.

[0058] To solve the above technical problems, an embodiment of the present invention provides a terminal, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the above-mentioned side chain power allocation method supporting PRS when running the computer program.

[0059] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0060] In an embodiment of the present invention, by determining the basic transmit power of PRS, and then allocating PRS transmit power to the PRS, and the PRS transmit power is greater than or equal to the basic transmit power of the PRS, the balance of power allocation can be effectively improved, and at least the basic power requirement of PRS can be met.

[0061] Furthermore, after determining the basic transmit power of PRS, it also includes: determining the basic transmit power of PSSCH and / or PSCCH; allocating transmit power to the PSSCH and / or PSCCH, wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH, and the transmit power allocated to the PSCCH is greater than or equal to the basic transmit power of the PSCCH, which can further effectively improve the balance of power allocation and at least meet the basic power requirements of PRS, PSSCH and / or PSCCH.

[0062] Furthermore, before determining the basic transmit power of the PRS, the method further includes: allocating transmit power to the PSSCH; wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH. This can further effectively improve the balance of power allocation and at least meet the basic power requirements of the PSSCH and PRS. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a flow chart of a side chain power allocation method supporting PRS in an embodiment of the present invention;

[0064] Figure 2 is a partial flow chart of another side chain power allocation method supporting PRS in an embodiment of the present invention;

[0065] Figure 3 It is a structural schematic diagram of a side chain power distribution device supporting PRS in an embodiment of the present invention. DETAILED DESCRIPTION

[0066] As mentioned above, in the existing auxiliary link technology, it is possible to support the simultaneous transmission of PRS and multiple signals. However, in the existing technology, when power is limited, the efficiency and accuracy of signal transmission are easily reduced due to unbalanced distribution.

[0067] The inventor of the present invention has found through research that the allocated power often has an upper limit, and it is difficult to satisfy that all signals are allocated to the upper limit, so it is necessary to allocate according to the transmission signal, and the order and proportion of allocation are very important. In the prior art, a fixed power value allocation method is usually adopted, which leads to the problem of transmission errors during the peak period of signal transmission, and the transmission efficiency is low.

[0068] In an embodiment of the present invention, by determining the basic transmit power of PRS, and then allocating PRS transmit power to the PRS, and the PRS transmit power is greater than or equal to the basic transmit power of the PRS, the balance of power allocation can be effectively improved, and at least the basic power requirement of PRS can be met.

[0069] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0070] Reference Figure 1 , Figure 1 1 is a flow chart of a side chain power allocation method supporting PRS in an embodiment of the present invention. The side chain power allocation method supporting PRS may include steps S11 to S12:

[0071] Step S11: According to P CMAX , P MAX,CBR and P PRS,SL (i) Determine the basic transmit power of PRS;

[0072] Step S12: Allocate PRS transmission power for the PRS, and the PRS transmission power is greater than or equal to the basic transmission power of the PRS.

[0073] Among them, P CMAX It is used to indicate the maximum transmit power of the terminal, P MAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR, P PRS,SL (i) is used to indicate the path loss compensation power of PRS when the PRS is sent at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity. MAX,CBR It can be configured through base station high-level signaling.

[0074] In the specific implementation of step S11, determining the basic transmission power of the PRS is conducive to ensuring that the transmission power of the PRS is basically satisfied.

[0075] In a specific implementation of the embodiment of the present invention, the following formula may be used to determine the basic transmit power of the PRS:

[0076] P PRS (i) = min(P CMAX ,P MAX,CBR ,P PRS,SL (i))

[0077] Among them, P PRS (i) is used to indicate the basic transmission power of PRS when sending PRS at the i-th positioning opportunity, P CMAX It is used to indicate the maximum transmit power of the terminal, PMAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR, P PRS,SL (i) is used to indicate the path loss compensation power of the PRS when the PRS is sent at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity.

[0078] Furthermore, the following formula can be used to determine P PRS,SL (i)

[0079]

[0080] or,

[0081]

[0082] Among them, P PRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P O,PRS It is used to indicate the power that the terminal expects to receive PRS, which can be configured through high-level signaling of the base station. μ is used to indicate the subcarrier bandwidth and CP type of PRS. It is used to indicate the number of RBs that send PRS when the PRS is sent at the i-th positioning opportunity. Combsize is used to indicate the frequency domain density of the auxiliary link PRS. PRS The PRS adjustment factor, PL, used to adjust the transmission power of the PRS PRS Used to indicate the path loss compensation power of PRS.

[0083] Combsize is used to indicate the frequency domain density of the auxiliary link PRS, and can also be understood as the columnar value of the auxiliary link PRS. For example, Combsize=4 indicates that one PRS RE is placed every four resource elements.

[0084] It should be noted that in the above specific implementation, only according to P CMAX , P MAX,CBR and P PRS,SL (i) Determine the basic transmission power of the PRS. In another specific implementation, the basic transmission power of the PRS may also be determined in combination with other appropriate parameters.

[0085] In a specific implementation of step S12, a PRS transmit power is allocated to the PRS, and the PRS transmit power is greater than or equal to a basic transmit power of the PRS.

[0086] In an embodiment of the present invention, by determining the basic transmit power of PRS, and then allocating PRS transmit power to the PRS, and the PRS transmit power is greater than or equal to the basic transmit power of the PRS, the balance of power allocation can be effectively improved, and at least the basic power requirement of PRS can be met.

[0087] Reference Figure 2 , Figure 2 FIG. 1 is a partial flow chart of another side chain power allocation method supporting PRS in an embodiment of the present invention. The another side chain power allocation method supporting PRS may include Figure 1 The steps S11 to S12 shown may further include steps S21 to S22 after step S12:

[0088] Step S21: Determine the basic transmit power of PSSCH and / or PSCCH;

[0089] Step S22: Allocate transmit power for the PSSCH and / or PSCCH.

[0090] The transmission power allocated to the PSSCH is greater than or equal to the basic transmission power of the PSSCH, and the transmission power allocated to the PSCCH is greater than or equal to the basic transmission power of the PSCCH.

[0091] It should be noted that the step of allocating transmit power for the PSSCH and PSCCH may include two situations. According to different situations, different methods may be used to determine the basic transmit power of the PSSCH.

[0092] Further, the step of allocating transmit power to the PSSCH and PSCCH may include: first allocating transmit power to the PSSCH, and then allocating transmit power to the PSCCH; or, first allocating transmit power to the PSCCH, and then allocating transmit power to the PSSCH.

[0093] Furthermore, if the transmit power is allocated to the PSSCH first and then to the PSCCH, the following formula is used to determine the basic transmit power of the PSSCH:

[0094] P PSSCH (i) = min(min(P CMAX ,P MAX,CBR )-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (i)))

[0095] Among them, P PSSCH(i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0096] Among them, the air interface connection (Uu) link refers to the air interface connection link between the terminal and the network side.

[0097] In the embodiment of the present invention, the P PSSCH,D (i) can be determined by referring to the path loss factor of the Uu link, where P PSSCH,SL (i) can be determined with reference to the path loss factor of the auxiliary link.

[0098] The basic transmit power of PSCCH is determined by the following formula:

[0099]

[0100] or,

[0101]

[0102] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0103] It should be noted that min(P CMAX ,P MAX,CBR )-P PRS (i) represents the maximum power remaining after allocating PRS, min(P CMAX ,P MAX,CBR )-P PSSCH (i)-P PRS (i) represents the maximum power remaining after allocating PRS and PSSCH.

[0104] It can be understood that after determining the basic transmit power of PRS, the transmit power is first allocated to the PSSCH and then to the PSCCH. When determining the basic transmit power of PSSCH, the basic transmit power of PRS is deducted first, and when determining the basic transmit power of PSCCH, the basic transmit powers of PRS and PSCCH are deducted first, which can at least meet the basic power requirements of PRS, PSSCH and / or PSCCH.

[0105] Furthermore, if the transmit power is allocated to the PSCCH first and then to the PSSCH, the following formula is used to determine the basic transmit power of the PSCCH:

[0106]

[0107] or,

[0108]

[0109] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmit power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity;

[0110] The basic transmit power of PSSCH is determined by the following formula:

[0111] P PSSCH (i) = min(min(P CMAX ,P MAX,CBR )-P PSCCH (i)-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (i)))

[0112] Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0113] In the embodiment of the present invention, the P PSSCH,D (i) can be determined by referring to the path loss factor of the Uu link, where P PSSCH,SL (i) can be determined with reference to the path loss factor of the auxiliary link.

[0114] It should be noted that min(P CMAX ,P MAX,CBR )-P PRS (i) represents the maximum power remaining after allocating PRS, min(P CMAX ,P MAX,CBR )-P PSCCH (i)-P PRS (i) represents the maximum power remaining after allocating PRS and PSSCH.

[0115] It can be understood that after determining the basic transmit power of PRS, the transmit power is first allocated to the PSCCH and then to the PSSCH. When determining the basic transmit power of PSCCH, the basic transmit power of PRS is deducted first. When determining the basic transmit power of PSSCH, the basic transmit powers of PRS and PSCCH are deducted first. This can at least meet the basic power requirements of PRS, PSSCH and / or PSCCH.

[0116] In an embodiment of the present invention, after determining the basic transmit power of PRS, the basic transmit power of PSSCH and / or PSCCH is determined; allocating transmit power to the PSSCH and / or PSCCH can further effectively improve the balance of power allocation and at least meet the basic power requirements of PRS, PSSCH and / or PSCCH.

[0117] Furthermore, the following formula can be used to determine P PSSCH,D (i) and P PSSCH,SL (i)

[0118]

[0119]

[0120] Among them, P O,D Used to indicate the power that the base station expects to receive from PSSCH. It is used to indicate the number of RBs that send PSSCH when sending PSSCH at the i-th positioning opportunity. D The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH D Used to indicate the path loss compensation power of PSSCH; P O,SL Used to indicate the power that the base station expects to receive from PSSCH, αSL The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH SL Used to indicate the path loss compensation power of PSSCH.

[0121] In another specific implementation of the embodiment of the present invention, the transmit power may be allocated to the PSSCH first, and then the transmit power may be allocated to the PRS.

[0122] Specifically, before determining the basic transmit power of PRS, the side chain power allocation method supporting PRS may also include: determining the basic transmit power of PSSCH; allocating transmit power to the PSSCH; wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH.

[0123] Furthermore, the following formula may be used to determine the basic transmit power of the PSSCH:

[0124] P PSSCH (i) = min(P CMAX ,P MAX,CBR ,min(P PSSCH,D (i),P PSSCH,SL (i)))

[0125] Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to indicate the transmission power of PSSCH at the i-th positioning opportunity of sending PSSCH, P PSSCH,SL (i) is used to represent the transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0126] In the embodiment of the present invention, the P PSSCH,D (i) can be determined by referring to the path loss factor of the Uu link, where P PSSCH,SL (i) can be determined with reference to the path loss factor of the auxiliary link.

[0127] Furthermore, the basic transmit power of the PRS may be determined by using the following formula:

[0128] P PRS (i) = min(min(P CMAX ,P MAX,CBR )-P PSSCH (i),P PRS,SL (i))

[0129] Among them, P PRS(i) is used to indicate the basic transmission power of PRS when sending PRS at the i-th positioning opportunity, P CMAX It is used to indicate the maximum transmit power of the terminal, P MAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR, P PRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity.

[0130] It should be noted that min(P CMAX ,P MAX,CBR )-P PSSCH (i) represents the maximum power remaining after allocating PSSCH.

[0131] It can be understood that first determining the basic transmission power of the PSSCH and then determining the basic transmission power of the PRS can at least meet the basic power requirements of the PSSCH and PRS.

[0132] Furthermore, the following formula can be used to determine P PRS,SL (i)

[0133]

[0134] or,

[0135]

[0136] Among them, P PRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P O,PRS It is used to indicate the power that the terminal expects to receive PRS, and μ is used to indicate the subcarrier bandwidth and CP type of PRS. It is used to indicate the number of RBs that send PRS when the PRS is sent at the i-th positioning opportunity. Combsize is used to indicate the frequency domain density of the auxiliary link PRS. PRS The PRS adjustment factor, PL, used to adjust the transmission power of the PRS PRS Used to indicate the path loss compensation power of PRS.

[0137] In the embodiment of the present invention, before determining the basic transmit power of the PRS, transmit power is also allocated to the PSSCH, wherein the transmit power allocated to the PSSCH is greater than or equal to the basic transmit power of the PSSCH. This can further effectively improve the balance of power allocation and at least meet the basic power requirements of the PSSCH and PRS.

[0138] Furthermore, after determining the basic transmit power of PRS, the method may also include: determining the basic transmit power of PSCCH; allocating transmit power to the PSCCH; wherein the transmit power allocated to the PSCCH is greater than or equal to the basic transmit power of the PSCCH.

[0139] Furthermore, the basic transmit power of PSCCH can be determined by the following formula:

[0140]

[0141] or,

[0142]

[0143] Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

[0144] It should be noted that min(P CMAX ,P MAX,CBR )-P PSSCH (i)-P PRS (i) represents the maximum power remaining after allocating PSSCH and PRS.

[0145] It can be understood that first determining the basic transmission power of PSSCH, then determining the basic transmission power of PRS, and then determining the basic transmission power of PSCCH can at least meet the basic power requirements of PSSCH, PRS and PSCCH.

[0146] In the embodiment of the present invention, before determining the basic transmit power of the PRS, transmit power is also allocated to the PSSCH; after determining the basic transmit power of the PRS, transmit power is also allocated to the PSCCH. This can further effectively improve the balance of power allocation and at least meet the basic power requirements of the PSSCH, PRS and PSCCH.

[0147] Reference Figure 3 , Figure 31 is a schematic diagram of a side chain power distribution device supporting PRS in an embodiment of the present invention. The side chain power distribution device supporting PRS may include:

[0148] The power determination module 31 is used to determine the power of CMAX , P MAX,CBR and P PRS,SL (i) Determine the basic transmit power of PRS;

[0149] The power allocation module 32 is used to allocate PRS transmission power to the PRS, and the PRS transmission power is greater than or equal to the basic transmission power of the PRS.

[0150] For the principle, specific implementation and beneficial effects of the side chain power allocation device supporting PRS, please refer to the relevant description of the side chain power allocation method supporting PRS described above, which will not be repeated here.

[0151] It should be pointed out that the technical solution of the present invention can be applied to 5G (5Generation) communication systems, as well as 4G and 3G communication systems, and can also be applied to various new communication systems in the future, such as 6G, 7G, etc.

[0152] The embodiment of the present invention further provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are executed. The storage medium may be a computer-readable storage medium, for example, may include a non-volatile memory or a non-transitory memory, and may also include an optical disk, a mechanical hard disk, a solid-state hard disk, etc.

[0153] Specifically, in the embodiment of the present invention, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0154] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0155] The embodiment of the present invention further provides a terminal, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the above method when running the computer program. The terminal includes but is not limited to terminal devices such as mobile phones, computers, and tablet computers.

[0156] Specifically, the terminal in the embodiments of the present application may refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment, user agent or user device. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0157] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A side chain power allocation method supporting PRS, characterized in that: The following steps are involved: According to P CMAX , P MAX,CBR and P PRS,SL (i) Determine the basic transmit power of PRS; Allocate a PRS transmit power for the PRS, where the PRS transmit power is greater than or equal to a basic transmit power of the PRS; Among them, P CMAX It is used to indicate the maximum transmit power of the terminal. MAX,CBR It is used to indicate the maximum transmit power of the terminal under a given CBR. PRS,SL (i) is used to indicate the path loss compensation power of the PRS when the PRS is sent at the i-th positioning opportunity, and i is used to indicate that the transmission is at the i-th positioning opportunity; The following formula is used to determine the basic transmit power of the PRS: P PRS (i)=min(P CMAX ,P MAX,CBR ,P PRS,SL (i)) Among them, P PRS (i) is used to represent the basic transmission power of PRS when the PRS is transmitted at the i-th positioning opportunity.

2. The side chain power allocation method supporting PRS according to claim 1, characterized in that: Use the following formula to determine P PRS,SL (i) or, Among them, P PRS,SL (i) is used to represent the path loss compensation power of PRS when sending PRS at the i-th positioning opportunity, P O,PRS It is used to indicate the power that the terminal expects to receive PRS, and μ is used to indicate the subcarrier bandwidth and CP type of PRS. It is used to indicate the number of RBs that send PRS when the PRS is sent at the i-th positioning opportunity. Combsize is used to indicate the frequency domain density of the auxiliary link PRS. PRS The PRS adjustment factor, PL, used to adjust the transmission power of the PRS PRS Used to indicate the path loss compensation power of PRS.

3. The side chain power allocation method supporting PRS according to claim 1, characterized in that: After determining the basic transmit power of the PRS, it also includes: Determine the basic transmit power of PSSCH and / or PSCCH; Allocate transmit power for the PSSCH and / or PSCCH; The transmission power allocated to the PSSCH is greater than or equal to the basic transmission power of the PSSCH, and the transmission power allocated to the PSCCH is greater than or equal to the basic transmission power of the PSCCH.

4. The side chain power allocation method supporting PRS according to claim 3, characterized in that: Allocating transmit power for the PSSCH and the PSCCH includes: Firstly, allocating transmit power to the PSSCH, and then allocating transmit power to the PSCCH; or, The transmission power is first allocated to the PSCCH, and then the transmission power is allocated to the PSSCH.

5. The side chain power allocation method supporting PRS according to claim 4, characterized in that: If the transmit power is allocated to the PSSCH first and then to the PSCCH, the basic transmit power of the PSSCH is determined by the following formula: P PSSCH (i)=min(min(P CMAX ,P MAX,CBR )-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (in))) Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to represent the transmission power of PSSCH determined by the path loss factor of the Uu link when the PSSCH is sent at the i-th positioning opportunity, P PSSCH,SL (i) is used to indicate the transmit power of the PSSCH determined with reference to the path loss factor of the auxiliary link when the PSSCH is transmitted at the i-th positioning opportunity; The basic transmit power of PSCCH is determined by the following formula: or, Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmission power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity.

6. The side chain power allocation method supporting PRS according to claim 4, characterized in that: If the transmit power is allocated to the PSCCH first and then to the PSSCH, the basic transmit power of the PSCCH is determined by the following formula: or, Among them, P PSCCH (i) is used to indicate the basic transmission power of PSCCH when sending PSCCH at the i-th positioning opportunity, It is used to indicate the number of RBs used to send PSCCH at the i-th positioning opportunity of sending PSCCH. It is used to indicate the number of RBs that transmit PSSCH at the i-th positioning opportunity. PSSCH (i) is used to indicate the basic transmit power of PSSCH when the PSSCH is transmitted at the i-th positioning opportunity; The basic transmit power of PSSCH is determined by the following formula: P PSSCH (i)=min(min(P CMAX ,P MAX,CBR )-P PSCCH (i)-P PRS (i),min(P PSSCH,D (i),P PSSCH,SL (i))) Among them, P PSSCH (i) is used to indicate the basic transmission power of PSSCH when sending PSSCH at the i-th positioning opportunity, P PSSCH,D (i) is used to represent the transmission power of PSSCH determined by the path loss factor of the Uu link when the PSSCH is sent at the i-th positioning opportunity, P PSSCH,SL (i) is used to represent the transmission power of PSSCH determined with reference to the path loss factor of the auxiliary link when the PSSCH is transmitted at the i-th positioning opportunity.

7. The side chain power allocation method supporting PRS according to claim 5 or 6, characterized in that: Use the following formula to determine P PSSCH,D (i) and P PSSCH,SL (i) Among them, P O,D Used to indicate the power that the base station expects to receive from PSSCH. It is used to indicate the number of RBs that send PSSCH when sending PSSCH at the i-th positioning opportunity. D The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH D Used to indicate the path loss compensation power of PSSCH; P O,SL Used to indicate the power that the base station expects to receive from PSSCH, α SL The PSSCH adjustment factor, PL, used to adjust the transmission power of the PSSCH SL Used to indicate the path loss compensation power of PSSCH.

8. A side chain power distribution device supporting PRS, characterized in that: include: The power determination module is used to determine the power of CMAX , P MAX,CBR and P PRS,SL (i) Determine the basic transmit power of PRS; A power allocation module, configured to allocate a PRS transmit power to the PRS, wherein the PRS transmit power is greater than or equal to a basic transmit power of the PRS; The following formula is used to determine the basic transmit power of the PRS: P PRS (i)=min(P CMAX ,P MAX,CBR ,P PRS,SL (i)) Among them, P PRS (i) is used to represent the basic transmission power of PRS when the PRS is transmitted at the i-th positioning opportunity.

9. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the side chain power allocation method supporting PRS according to any one of claims 1 to 7 are executed.

10. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the side chain power allocation method supporting PRS according to any one of claims 1 to 7.

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