CN108076442B - PUSCH (physical uplink shared channel) transmission block length determination method and user equipment - Google Patents

PUSCH (physical uplink shared channel) transmission block length determination method and user equipment Download PDF

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CN108076442B
CN108076442B CN201611021071.5A CN201611021071A CN108076442B CN 108076442 B CN108076442 B CN 108076442B CN 201611021071 A CN201611021071 A CN 201611021071A CN 108076442 B CN108076442 B CN 108076442B
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network
pusch
prb
base station
resource blocks
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CN108076442A (en
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李晋声
史满姣
冯莉
钟勤
史智宁
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Potevio Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The invention discloses a PUSCH transmissionThe method for determining the block length comprises the following steps: after receiving a scheduling instruction sent by a base station, the UE determines the number N 'of physical resource blocks occupied by the PUSCH of the UE according to the scheduling instruction'PRB(ii) a The UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base stationPRB(ii) a The state information of the network where the UE is located includes: MCS information, information on the number of effective symbols used by the UE to transmit PUSCH in a special subframe, a reception state of a base station receiver, and the like; the state information of the network is sent to the UE by the base station through downlink data in advance. The method of the invention can realize that the UE transmits the PUSCH on the UpPTS, thereby effectively utilizing the frequency spectrum resource of the network.

Description

PUSCH (physical uplink shared channel) transmission block length determination method and user equipment
Technical Field
The invention relates to the technical field of communication, in particular to a method for determining the length of a PUSCH (physical uplink shared channel) transmission block and user equipment.
Background
The uplink and downlink service demands of the currently commercialized 4G network appear to increase sharply as the number of users increases. It is estimated that the data rate increase per user will be more than 9 times from 2014 to 2020. The 3GPP (3rd Generation Partnership Project) is making more specifications to meet such rapidly growing business demands. On the other hand, telecom operators are also deploying more low power micro networks and more antennas at the base stations to meet the user rate requirements. In such a practical application scenario, the uplink traffic channel will obtain higher SINR (Signal to Interference plus Noise Ratio) communication quality enough to support a high-order traffic modulation scheme.
Currently, the LTE standard of 3GPP only defines that supportable symbols are maximum 2 at the UpPTS (Uplink pilot time slot Physical Channel) of a special time slot from R8 to R12, and cannot support PUSCH (Physical Uplink Shared Channel) transmission. That is, the existing 3GPP protocol release only supports configuring 1-2 SC-FDMA symbols for transmitting SRS signals in the special subframe UpPTS from R8 to R12, and these SRS symbols are consistent with supporting uplink channel measurement by the base station.
In addition, the 3GPP protocol introduces parameter SRS-UpPtsAd in release 13, and can redefine a maximum of 4 SC-FDMA symbols for transmitting SRS signals on the original basis, and these SRS symbols can enable the base station already installed with Massive-MIMO antennas to perform uplink channel measurement.
However, up to now, the 3GPP protocol does not support PUSCH transmission in the special subframe UpPTS field. Further, as 4G business becomes more mature, TD-LTE cannot transmit PUSCH channels in special subframes, resulting in the following drawbacks:
firstly, the above situation makes the system scheduling lack flexibility, and the uplink feedback status information of the burst high-speed download service may not be fed back in time, limiting the transmission rate of the system application layer.
Secondly, when the number of the system UEs is large and the system load is high, there may be more UEs that do not satisfy the reciprocity condition, and meanwhile, the failure of the TD-LTE system to transmit the PUSCH channel in the special subframe will make the time-frequency resources available for the special subframe of the TD-LTE system unable to be effectively utilized.
Moreover, under the scenario with the business requirement as the main point, the uplink time-frequency resource of the special subframe of the TD-LTE system may also be wasted due to the inability to transmit PUSCH.
Therefore, a PUSCH transport block length determination method is required so that the UE transmits PUSCH in the UpPTS field of the special subframe.
Disclosure of Invention
In view of the above problems, the present invention proposes a PUSCH transport block length determination method and a user equipment that overcome or at least partially solve the above problems.
To this end, in a first aspect, the present invention provides a PUSCH transport block length determination method, including:
after receiving a scheduling instruction sent by a base station, the UE determines the number N 'of physical resource blocks occupied by the PUSCH of the UE according to the scheduling instruction'PRB；
The UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB；
Wherein, the state information of the network where the UE is located includes: MCS information, information related to the number of effective symbols used by the UE for transmitting the PUSCH in a special subframe, the receiving state of a base station receiver, network load information and network uplink interference information; the state information of the network is sent to the UE by the base station through downlink data in advance.
Optionally, the UE adjusts the number N 'of physical resource blocks according to status information of a network in which the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBBefore, the method further comprises:
and the UE determines the effective symbol number used by the UE for transmitting the PUSCH in the special subframe according to the information related to the effective symbol number used by the UE for transmitting the PUSCH in the special subframe.
Optionally, the number N 'of physical resource blocks is adjusted according to status information of a network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBThe method comprises the following steps:
the UE obtains the number N of physical resource blocks occupied by the PUSCH of the UE according to the following formula IPRB；
The formula I is as follows:
Figure BDA0001153317650000031
wherein r is a parameter determined by the UE according to the state information of the network where the UE is located.
Optionally, the UE adjusts the number N 'of physical resource blocks according to the operation status information of the base station'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBBefore, the method further comprises:
the UE stores at least one corresponding relation table which is configured in a semi-static mode in advance by a network side and used for determining a parameter r;
and the corresponding relation table records MCS information and the corresponding relation of the number of effective symbols used for transmitting the PUSCH by the UE in a special subframe.
In a second aspect, the present invention provides a user equipment, comprising:
a first determining unit, configured to determine, according to a scheduling instruction sent by a base station, the number N 'of physical resource blocks occupied by the UE PUSCH after receiving the scheduling instruction'PRB；
An adjusting unit, configured to adjust the number N 'of physical resource blocks according to status information of a network in which the ue is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB；
Wherein, the state information of the network where the user equipment is located includes: MCS information, information related to the number of effective symbols used by the user equipment to transmit PUSCH in a special subframe, a receiving state of a base station receiver, a network load condition and network uplink interference information; the state information of the network is sent to the UE by the base station through downlink data in advance.
Optionally, the user equipment further includes:
a second determining unit, configured to determine, according to information related to the number of effective symbols used by the user equipment to transmit PUSCH in the special subframe, the number of effective symbols used by the UE to transmit PUSCH in the special subframe in the status information of the network.
Optionally, the adjusting unit is specifically configured for
Acquiring the number N of physical resource blocks occupied by the PUSCH of the user equipment according to the following formula IPRB；
The formula I is as follows:
Figure BDA0001153317650000041
wherein r is a parameter determined by the user equipment according to the state information of the network where the UE is located.
According to the technical scheme, the method for determining the length of the PUSCH transport block and the user equipment provided by the invention adjust the number N 'of the physical resource blocks occupied by the PUSCH determined by the UE according to the scheduling instruction'PRBFurther, the UE can be enabled to transmit PUSCH on UpPTS, thereby implementing a function of adding support for PUSCH transmission in a special subframe, so as to more effectively utilize uplink radio spectrum resources in an existing network.
Drawings
Fig. 1 is a flowchart illustrating a method for determining a PUSCH transport block length according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention.
The invention provides a method for determining the length of a transmission block required by UE (user equipment) to support PUSCH (physical uplink shared channel) transmission in a UpPTS (uplink packet data station) under the framework of a 3GPP (third generation partnership project) standard, wherein the method is compatible with the current 3GPP protocol as much as possible.
In the embodiment of the invention, the downlink DwPTS domain of the special subframe occupies at least 3 symbols, and considering that GP time of at least 1-2 symbols needs to be reserved to ensure that hardware circuits such as radio frequency and the like of a base station and UE can carry out uplink and downlink transmission and reception conversion, and maintain a normal working state, the number of SC-FDMA symbols actually used for PUSCH transmission is limited, and the length of a transmission block can be reasonably determined only by carrying out proportional transformation on the length of the existing obtained transmission block according to the proportion of the total RE resource number used for transmitting the PUSCH to the total RE number used for PUSCH transmission of a common uplink time slot.
As shown in fig. 1, fig. 1 is a schematic flowchart illustrating a PUSCH transport block length determining method according to an embodiment of the present invention, where the method of the present embodiment includes the following steps:
101. after receiving the scheduling instruction sent by the base station, the UE according to the scheduling instructionPhysical resource block number N 'occupied by PUSCH of UE'PRB。
In this step, the number of physical resource blocks determined by the UE scheduling instruction is N'PRBWhich may be determined with reference to existing means, is not adjusted by the present embodiment. This can be done in accordance with the known manner.
102. The UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB。
In this embodiment, the state information of the network where the UE is located includes: MCS information, information related to the number of effective symbols used by the UE for transmitting the PUSCH in a special subframe, the receiving state of a base station receiver, network load information, network uplink interference information and the like; the state information of the network is sent to the UE by the base station through downlink data in advance.
That is to say, in this embodiment, the network side may configure an appropriate proportional relationship to the UE through a high-level signaling in a semi-static manner according to the receiver capability of the base station and the network synchronization condition, so as to determine the length of the PUSCH transport block. In this embodiment, since the network load information, the uplink interference information, and the like in the network state information are dynamically changed, the semi-static method has certain advantages.
For example, if a transport block can be transmitted in the UpPTS field of the special subframe of frame format 2, it is processed as follows,
assuming that the base station receiver capability is strong and the network frame timing is good (i.e., the base station is in a synchronous network), then the calculation is performed according to the following formula,
Figure BDA0001153317650000061
of course, if the transport block cannot be transmitted in the UpPTS field of the special subframe of frame format 2, it is calculated according to the manner specified by the existing protocol,
NPRB＝N′PRB。
therefore, the total number of the physical resource blocks actually allocated by the UE can be obtained, and the length of each resource block transmitted by the UE in the PUSCH can be further determined.
It should be noted that, in practical applications, N is determinedPRBThereafter, the MCS information (MCS level and modulation scheme) and the determined equivalent frequency domain resource (RB block number) are also combined. That is, the size of the transport block is obtained by searching the existing transport block table. This step is not modified in this embodiment and can be implemented in the existing manner.
In addition, for example, before step 102 shown in fig. 1, the method further includes the following step 102a not shown in the figure:
102a: and the UE determines the effective symbol number used by the UE for transmitting the PUSCH in the special subframe according to the information related to the effective symbol number used by the UE for transmitting the PUSCH in the special subframe.
For example, the UE determines the number of effective symbols used by the UE to transmit PUSCH in a special subframe according to equation two below
Figure BDA0001153317650000071
The formula II is as follows:
Figure BDA0001153317650000072
wherein N is(x) sc-fdmaThe total number of symbols used for uplink signal transmission for UpPTS of serving cell x,
Figure BDA0001153317650000073
x is a parameter scfdma-UpPtsAd configured by the network side for the serving cell X to the UE to define additional SC-FDMA symbols for UpPTS transmission,
Figure BDA0001153317650000074
Figure BDA0001153317650000075
represents the total number of symbols used by the uplink subframe of serving cell x to transmit SRS.
Step 102 may be performed after step 102a is performed in this implementation.
Optionally, before step 102 shown in fig. 1, the method further comprises the following step 102b not shown in the figure:
102b: the UE stores at least one corresponding relation table which is configured in a semi-static mode in advance by a network side and used for determining a parameter r;
in the step, the corresponding relation table records the corresponding relation between the MCS information and the number of effective symbols used by the UE for transmitting the PUSCH in the special subframe.
In this alternative implementation, after steps 102a, 102b are performed, step 102 may be performed.
In another alternative implementation, the foregoing step 102 may specifically be:
the UE obtains the number N of physical resource blocks occupied by the PUSCH of the UE according to the following formula IPRB；
The formula I is as follows:
Figure BDA0001153317650000076
wherein r is a parameter determined by the UE according to the state information of the network where the UE is located.
Specifically, if the receiving state of the base station receiver is good and the network where the base station is located is a synchronous network, the UE determines the r value according to the following table one;
watch 1
Figure BDA0001153317650000081
Otherwise, the UE determines the r value according to the second table;
watch two
Figure BDA0001153317650000082
Figure BDA0001153317650000091
Wherein, the r value determined to be "0" in table one and table two indicates that the UE cannot transmit PUSCH on UpPTS.
In tables one and two
Figure BDA0001153317650000092
Is determined according to step 102a described above.
In addition, in the above table I, when N isSRS>1 or
Figure BDA0001153317650000093
According to special subframe configuration and
Figure BDA0001153317650000094
obtaining r;
in Table 2 above, when N isSRS0 or
Figure BDA0001153317650000095
According to special subframe configuration and
Figure BDA0001153317650000096
and r is obtained.
That is, in a specific application, table one is used when uplink interference is small/base station receiver load is small/capability is strong, and at this time, a transmission block is high/a transmission code rate is relatively high; otherwise, table two is used.
The following is a description of a specific example of the process shown in FIG. 1:
example one:
the UE is in a hotspot coverage scene (such as coverage of micro cells, good clock synchronization among the cells, mainly using a higher-level commercial terminal for a low-speed user and mainly requiring downlink service), the bandwidth of a hotspot service cell is 20M, and the base station is configured with an FD-MIMO antenna array. At this time, the state information of the network where the current UE is located is as follows:
network side to TDD frame format configuration packetComprises the following steps: the uplink and downlink are configured to be 2, the special subframe is configured to be 10, namely the DwPTS domain length is 6 symbols, the GP domain length is 2 symbols, and then the UpPTS domain length N(x) sc-fdmaIs 6 symbols;
the network side reserves 4 symbols for the UpPTS field for SRS transmission (N)SRS4) so that the high-end user performs uplink channel measurement and supports calculation of a beamforming factor above 16 downlink ports, so that the network may allocate 2 symbols to the high-end user in the UpPTS domain for PUSCH transmission, and this PUSCH transmission may be used to transmit state feedback information for downlink traffic.
Because the network synchronization is good and the processing capacity of the base station is strong, the second formula can be adopted to determine the network synchronization
Figure BDA0001153317650000101
Further searching the first table to determine the r value;
Figure BDA0001153317650000102
suppose here that the number of network-allocated resource blocks of the PUSCH is 96, i.e., N'PRB96 and 1 symbol for DMRS transmission (N)DMRS1), and therefore,
Figure BDA0001153317650000103
is 1;
the above-mentioned special subframe configuration value is 10,
Figure BDA0001153317650000104
to 1, looking up the above table one, the scaling factor r for the transport block length calculation is 0.0909,
and then according to the formula one mentioned above,
Figure BDA0001153317650000105
determining NPRBThe UE will actually adopt N8PRBAnd determining the length of the PUSCH transmission block by combining the MCS as the number of the physical resource blocks.
Example two:
in the coverage of a general macro cell, the clock synchronization error between the local cell and the co-frequency neighboring cell is high, the number of users is large, and there are requirements for different moving speeds and different service requirements, such as high, medium, low, and the like, and there are many users of the VoLTE service, and at this time, the state information of the network where the current UE is located is as follows:
the network side adopts the uplink and downlink proportion of 1 for TDD frame format configuration and the special subframe configuration of 10, namely the DwPTS domain length is 6 symbols, the GP domain length is 2 symbols, then the UpPTS domain length N(x) sc-fdmaFor 6 symbols, since there are terminals that do not meet the reciprocity requirement, the network side may generally only need to configure 1 symbol for SRS transmission for UpPTS (N)SRS＝1)，
Similarly, the UE is scheduled and transmitted by the network in the UpPTS domain for the PUSCH only needs 1 symbol for DMRS transmission (N)DMRS1) so determined according to the aforementioned formula two
Figure BDA0001153317650000111
Is the number of the carbon atoms in the carbon atoms to be 4,
at this time, the lookup table is used for determining the PUSCH transport block length, and the lookup table determines that the scaling factor r used for the transport block length calculation is 0.3333.
If the number of frequency domain resource blocks allocated by the network side for PUSCH of the UE is 96, it is calculated according to the formula I, NPRBSo the UE will actually adopt N31PRBAs the number of physical resource blocks;
thus, the PUSCH transport block length may be determined in conjunction with the MCS.
Example three:
in some special private network applications using the LTE system, the network uses a low-frequency spectrum band for wide area communication coverage, and the clock synchronization between base stations in the network is generally performed mainly by the UE of the uplink service, and at this time, the state information of the network where the current UE is located is as follows:
each cell at the network side can configure the TDD frame format to have the uplink and downlink proportion of 0 and the special subframe configuration of 0, namely the DwPTS domain lengthIs 3 symbols, the GP field length is 2 symbols, the UpPTS field length N(x) sc-fdmaThe number of the grooves is 9.
Since the UE has low requirement for the downlink traffic rate, the network may generally only need to configure 2 symbols for SRS transmission (N) for UpPTSSRS2), the UE is also scheduled for PUSCH transmission in UpPTS domain by network, and only 1 symbol is needed for DMRS transmission for PUSCH (N)DMRS1) so determined according to the aforementioned formula two
Figure BDA0001153317650000112
Is 6.
At this time, the lookup table is used for determining the PUSCH transport block length, and the lookup table determines that the scaling factor r used for the transport block length calculation is 0.5.
If the number of frequency domain resource blocks allocated by the network for PUSCH by the UE is 96, according to the formula, NPRB48, so the UE will actually adopt NPRBAs the number of physical resource blocks;
thus, the PUSCH transport block length may be determined in conjunction with the MCS.
In order to better understand the above-mentioned contents of the present application, the following supplementary description is given.
Since the UE may need to transmit SRS at UpPTS to support various application scenarios by system configuration, and it is now necessary to support PUSCH transmission at UpPTS, the following is specified:
the newly introduced parameter scfdma-UpPtsAd (actually X) represents the increased number of SC-FDMA symbols supporting uplink signal (including SRS and PUSCH) transmission on UpPTS.
Thus, the number of available symbols for supporting PUSCH transmission for a specific UE at UpPTS is: for special subframe configurations 0-4, the time length is ((1+ X) -srs-UpPtsAd); and for special subframe configurations 5-9, the time length is ((2+ X) -srs-UpPtsAd).
At this time, "X is the increased SC-FDMA symbol number of UpPTS, if the network side is configured with scfdma-UpPtsAd, X is scfdma-UpPtsAd, otherwise, X is 0; SRS-UpPtsAd represents the total number of symbols configured on the network side for transmitting SRS at UpPTS. ".
Further, the following is specified:
first, for non-multicarrier:
Figure BDA0001153317650000121
Nsc-fdmafor the total number of symbols used by UpPTS for uplink signal transmission,
Figure BDA0001153317650000122
x is a higher layer configured parameter scfdma-UpPtsAd used to define additional SC-FDMA symbols for UpPTS transmission;
Figure BDA0001153317650000131
NSRSrepresenting the total number of symbols used to transmit SRS, in case of TDD special subframe UpPTS, NSRSEqual to SRS-UpPtsAd, SRS-UpPtsAd is configured by the network side to represent the total number of symbols used at UpPTS to transmit SRS.
Second, for the UE or network side device for supporting the multi-carrier function
Figure BDA0001153317650000132
Where N is(x) sc-fdmaThe total number of symbols used for uplink signal transmission for UpPTS of serving cell x,
Figure BDA0001153317650000133
x is a parameter scfdma-UpPtsAd configured by a higher layer to a serving cell X for a user, and is used for defining an additional SC-FDMA symbol sent by UpPTS;
Figure BDA0001153317650000134
Figure BDA0001153317650000135
the total number of symbols used to transmit SRS in the uplink subframe representing serving cell x, in case of TDD special subframe,
Figure BDA0001153317650000136
equal to SRS-UpPtsAd, the configuration of the UE at serving cell x by the network side represents the total number of symbols used at UpPTS for SRS transmission.
Thirdly, for the occasion of applying the LTE to the MTC, the following modifications are made:
Figure BDA0001153317650000137
wherein N issc-fdmaFor the total number of symbols used by UpPTS for uplink signal transmission,
Figure BDA0001153317650000138
x is a higher layer configured parameter scfdma-UpPtsAd used to define additional SC-FDMA symbols for UpPTS transmission;
Figure BDA0001153317650000141
NSRSrepresenting the total number of symbols used to transmit the SRS.
It should be noted that in MTC applications, the number of symbols used for transmitting SRS may be limited to at most 1 symbol, as in other normal uplink subframes.
In addition, as shown in fig. 2, an embodiment of the present invention further provides a user equipment, where the user equipment includes: a first determination unit 21 and an adjustment unit 22;
the first determining unit 21 is configured to determine, after receiving a scheduling instruction sent by a base station, a physical channel used by the UE PUSCH according to the scheduling instructionNumber of resource blocks N'PRB；
The adjusting unit 22 is configured to adjust the number N 'of physical resource blocks according to status information of a network where the ue is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB；
Wherein, the state information of the network where the user equipment is located includes: MCS information, information related to the number of effective symbols used by the user equipment to transmit PUSCH in a special subframe, a receiving state of a base station receiver, a network load condition and network uplink interference information; the state information of the network is sent to the UE by the base station through downlink data in advance.
For example, the adjusting unit is specifically configured to obtain the number N of physical resource blocks occupied by the PUSCH of the ue according to the following formula onePRB；
The formula I is as follows:
Figure BDA0001153317650000142
wherein r is a parameter determined by the user equipment according to the state information of the network where the UE is located.
In addition, the user equipment further comprises a second determining unit, not shown in the figure, for determining the number of effective symbols used by the UE to transmit the PUSCH in the special subframe according to the information related to the number of effective symbols used by the user equipment to transmit the PUSCH in the special subframe in the status information of the network.
The apparatus shown in fig. 2 may perform the scheme of the foregoing method embodiment, and the present embodiment is not described in detail with reference to the foregoing description.
In the user equipment of this embodiment, the adjusting unit adjusts the number N 'of physical resource blocks occupied by the PUSCH determined by the UE according to the scheduling instruction'PRBFurther, the UE can be enabled to transmit PUSCH on UpPTS, thereby implementing a function of adding support for PUSCH transmission in a special subframe, so as to more effectively utilize uplink radio spectrum resources in an existing network.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
Those skilled in the art will appreciate that the steps of the embodiments may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims (4)

1. A PUSCH transport block length determination method, comprising:
after receiving a scheduling instruction sent by a base station, the UE determines the number N 'of physical resource blocks occupied by the PUSCH of the UE according to the scheduling instruction'PRB；
The UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB；
Wherein, the state information of the network where the UE is located includes: MCS information, information related to the number of effective symbols used by the UE for transmitting the PUSCH in a special subframe, the receiving state of a base station receiver, network load information and network uplink interference information; the state information of the network is sent to the UE by the base station through downlink data in advance;
the UE is according to the network of the UEState information, adjusting the number N of the physical resource blocks'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBBefore, the method further comprises:
the UE determines the effective symbol number of the PUSCH transmitted by the UE in the special subframe according to the information related to the effective symbol number of the PUSCH transmitted by the UE in the special subframe;
the UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBBefore, the method further comprises:
the storage network side of the UE adopts a semi-static mode to configure at least one corresponding relation table for determining a parameter r in advance;
the corresponding relation table records MCS information and the corresponding relation of the effective symbol number of the PUSCH transmitted by the UE in a special subframe;
the UE adjusts the number N 'of the physical resource blocks according to the state information of the network where the UE is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRBThe method comprises the following steps:
if the receiving state of the base station receiver is good and the network where the base station is located is a synchronous network, the UE determines the r value according to the first table;
watch 1
Figure FDA0002821780620000021
Otherwise, the UE determines the r value according to the second table;
watch two
Figure FDA0002821780620000022
Figure FDA0002821780620000031
Wherein, the r value determined to be "0" in the first table and the second table indicates that the UE cannot transmit PUSCH on UpPTS;
the method comprises the following steps that the UE determines the number of effective symbols used for transmitting the PUSCH in the special subframe according to the information related to the number of the effective symbols used for transmitting the PUSCH in the special subframe, and comprises the following steps:
the UE determines the number of effective symbols used by the UE for transmitting the PUSCH in the special subframe according to a formula II
Figure FDA0002821780620000032
The formula II is as follows:
Figure FDA0002821780620000033
wherein N is(x) sc-fdmaThe total number of symbols used for uplink signal transmission for UpPTS of serving cell x,
Figure FDA0002821780620000034
x is a parameter scfdma-UpPtsAd configured by the network side for the serving cell X to the UE to define additional SC-FDMA symbols for UpPTS transmission,
Figure FDA0002821780620000035
Figure FDA0002821780620000036
represents the total number of symbols used by the uplink subframe of serving cell x to transmit SRS.
2. The method of claim 1, wherein the number of physical resource blocks N 'is adjusted according to status information of a network where the UE is located'PRBAcquisition is used to map the base on UpPTSNumber of physical resource blocks N of station transmission resourcesPRBThe method comprises the following steps:
the UE obtains the number N of physical resource blocks occupied by the PUSCH of the UE according to the following formula IPRB；
The formula I is as follows:
Figure FDA0002821780620000041
wherein r is a parameter determined by the UE according to the state information of the network where the UE is located.
3. A user device, comprising:
a first determining unit, configured to determine, according to a scheduling instruction sent by a base station, the number N 'of physical resource blocks occupied by the UE PUSCH after receiving the scheduling instruction'PRB；
An adjusting unit, configured to adjust the number N 'of physical resource blocks according to status information of a network in which the ue is located'PRBAcquiring the number N of physical resource blocks for transmitting resources to the base station on the UpPTSPRB；
Wherein, the state information of the network where the user equipment is located includes: MCS information, information related to the number of effective symbols used by the user equipment to transmit PUSCH in a special subframe, a receiving state of a base station receiver, a network load condition and network uplink interference information; the state information of the network is sent to the UE by the base station through downlink data in advance;
the user equipment further comprises:
a second determining unit, configured to determine, according to information related to the number of effective symbols used by the user equipment to transmit PUSCH in a special subframe, the number of effective symbols used by the UE to transmit PUSCH in the special subframe in the status information of the network;
the adjusting unit is specifically configured to:
configuring at least one corresponding relation table for determining a parameter r in a semi-static manner in advance on a storage network side of the user equipment;
the corresponding relation table records MCS information and the corresponding relation of the effective symbol number of the PUSCH transmitted by the UE in a special subframe;
the adjusting unit is further specifically configured to:
if the receiving state of the base station receiver is good and the network where the base station is located is a synchronous network, the user equipment determines the r value according to the following table I;
watch 1
Figure FDA0002821780620000051
Otherwise, the user equipment determines the r value according to the second table;
watch two
Figure FDA0002821780620000052
Wherein, the r value determined to be "0" in table one and table two indicates that the user equipment cannot transmit the PUSCH on the UpPTS;
the second determining unit is specifically configured to:
enabling the user equipment to determine the effective symbol number of the PUSCH transmitted by the UE in the special subframe according to the formula II
Figure FDA0002821780620000061
The formula II is as follows:
Figure FDA0002821780620000062
wherein N is(x) sc-fdmaThe total number of symbols used for uplink signal transmission for UpPTS of serving cell x,
Figure FDA0002821780620000063
x is a parameter scfdma-UpPtsAd configured by the network side for serving cell X to the user equipment to define additional SC-FDMA symbols sent by UpPTS,
Figure FDA0002821780620000064
Figure FDA0002821780620000065
represents the total number of symbols used by the uplink subframe of serving cell x to transmit SRS.
4. User equipment according to claim 3, wherein the adjusting unit is specifically configured to
Acquiring the number N of physical resource blocks occupied by the PUSCH of the user equipment according to the following formula IPRB；
The formula I is as follows:
Figure FDA0002821780620000066
wherein r is a parameter determined by the user equipment according to the state information of the network where the UE is located.
CN201611021071.5A 2016-11-15 2016-11-15 PUSCH (physical uplink shared channel) transmission block length determination method and user equipment Expired - Fee Related CN108076442B (en)

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