CN107888354B - Transmission processing method, network side equipment and user equipment - Google Patents

Transmission processing method, network side equipment and user equipment Download PDF

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CN107888354B
CN107888354B CN201610875247.7A CN201610875247A CN107888354B CN 107888354 B CN107888354 B CN 107888354B CN 201610875247 A CN201610875247 A CN 201610875247A CN 107888354 B CN107888354 B CN 107888354B
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transmission
user
parameter
mode
reference signal
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CN107888354A (en
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吴丹
童辉
王飞
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • 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
    • H04W72/20—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

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

Abstract

The invention provides a transmission processing method, network side equipment and user equipment, which can reduce the overhead of transmitting a demodulation reference signal transmission parameter set of a paired user by a multi-user superposition transmission technology in a first mode. When the transmission processing method is used on a network side, the method comprises the following steps: when data are transmitted to user equipment based on a multi-user superposition transmission technology in a first mode, determining a demodulation reference signal transmission parameter set of a paired user used for transmission at this time from a demodulation reference signal transmission parameter set available for N paired users; assigning a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter group of a paired user used for the transmission; and transmitting the downlink control information to the user equipment. The invention reduces the overhead of downlink control information.

Description

Transmission processing method, network side equipment and user equipment
Technical Field
The invention relates to a multi-user superposition transmission technology, in particular to a transmission processing method, network side equipment and user equipment, which can reduce the overhead of downlink control information of the multi-user superposition transmission technology.
Background
The MUST (Multi-User Superposition Transmission) technology is a candidate air interface technology oriented to LTE-A Pro (commonly known as 4.5G) and 5G.
The MUST technique refers to that multiple data streams of multiple users are transmitted on the same time/frequency/space resource, e.g. different user equipments are multiplexed on the same spatial beam. Since the number of users simultaneously transmitting increases after using the MUST technique, the overall number of user connections can be increased.
Current MUST technology includes three transmission modes, among them:
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user PDSCH (Physical Downlink shared channel) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The multi-user superposition transmission techniques of the second mode and the third mode require power allocation parameters, while the multi-user superposition transmission technique of the first mode does not require power allocation parameters, but requires transmission of a demodulation reference signal transmission parameter set of a paired user including at least a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length.
In the multi-user superposition transmission technology in the first mode, according to the descriptions of antenna ports, scrambling code IDs, and layer number fields in DCI (Downlink Control Information) formats 2C and 2D of table5.3.3.1.5C-2 in TS36.212, for each data transmission layer, there are 12 possibilities that possible ports correspond to scrambling code IDs of demodulation reference signals, that is, after a transmission port and a scrambling code ID are selected by data in one layer, there are 11 possible port and scrambling code ID selection schemes for paired users, which may result in high blind detection complexity of a terminal.
Disclosure of Invention
The embodiment of the invention aims to provide a transmission processing method, network side equipment and user equipment, and complexity of terminal blind detection is reduced.
In order to achieve the above object, an embodiment of the present invention provides a transmission processing method, used in a network side, including:
when data are transmitted to user equipment based on a multi-user superposition transmission technology in a first mode, determining a demodulation reference signal transmission parameter set of a paired user used for transmission at this time from a demodulation reference signal transmission parameter set available for N paired users; said N is less than or equal to 10;
assigning a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter group of a paired user used for the transmission;
and transmitting the downlink control information to the user equipment.
In order to achieve the above object, an embodiment of the present invention further provides a transmission processing method, used in a user equipment side, including:
receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
determining a demodulation reference signal transmission parameter group of a paired user selected from a demodulation reference signal transmission parameter group available for N paired users and used for the transmission according to a parameter transmission field in the downlink control information;
and receiving first downlink data transmitted by a network side based on a multi-user superposition transmission technology in a first mode through the demodulation reference signal transmission parameter group of the paired users used for the transmission.
In order to achieve the above object, an embodiment of the present invention further provides a network side device, which includes:
a first parameter determining module, configured to determine, when data is transmitted to a user equipment based on a multi-user superposition transmission technique in a first mode, a demodulation reference signal transmission parameter set of a paired user used for transmission of this time from demodulation reference signal transmission parameter sets usable by N paired users; said N is less than or equal to 10;
a first assignment module, configured to assign a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter set of a paired user used in the current transmission;
and the first transmission module is used for transmitting the downlink control information to the user equipment.
In order to achieve the above object, an embodiment of the present invention further provides a user equipment, including:
the first receiving module is used for receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
a second parameter determining module, configured to determine, according to the parameter transmission field in the downlink control information, a demodulation reference signal transmission parameter set of a paired user selected from among demodulation reference signal transmission parameter sets usable by the N paired users and used for this transmission;
and the second receiving module is used for receiving the first downlink data transmitted by the network side based on the multi-user superposition transmission technology of the first mode through the demodulation reference signal transmission parameter group of the paired users.
According to the transmission processing method, the network side equipment and the user equipment, when the data are transmitted to the user equipment based on the multi-user superposition transmission technology of the first mode, part of schemes are selected from the existing possible port and scrambling ID selection schemes of paired users to be used by the user equipment. The complexity of blind detection of the terminal is reduced due to the reduced number of selectable reference signal transmission schemes.
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Fig. 1 is a flow chart illustrating a transmission processing method according to a first embodiment of the present invention;
fig. 2 is a flow chart illustrating a transmission processing method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a network-side device according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a user equipment according to a fourth embodiment of the present invention;
fig. 5 is a flow chart illustrating a transmission processing method according to a fifth embodiment of the invention;
fig. 6 is a flowchart illustrating a transmission processing method according to a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network-side device according to a seventh embodiment of the present invention;
fig. 8 shows a schematic structural diagram of a user equipment according to an eighth embodiment of the present invention.
Detailed Description
According to the transmission processing method, the network side equipment and the user equipment, when the data are transmitted to the user equipment based on the multi-user superposition transmission technology of the first mode, part of schemes are selected from the existing possible port and scrambling ID selection schemes of paired users to be used by the user equipment. The complexity of blind detection of the terminal is reduced due to the reduced number of selectable reference signal transmission schemes.
As shown in fig. 1, a transmission processing method according to a first embodiment of the present invention is applied to a network side, and includes:
step 101, when transmitting data to user equipment based on a multi-user superposition transmission technology in a first mode, determining a demodulation reference signal transmission parameter set of a paired user used for transmission at this time from a demodulation reference signal transmission parameter set usable by N paired users; said N is less than or equal to 10;
102, assigning a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter group of a paired user used in the current transmission;
step 103, transmitting the downlink control information to the user equipment.
After the downlink control information is transmitted to the user equipment, the user equipment can determine a demodulation reference signal transmission parameter set of a paired user used for the transmission through a parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the first mode.
In the first embodiment of the present invention, compared with the prior art, the user equipment is not selected from the demodulation reference signal transmission parameter sets of 11 paired users, but selected from the demodulation reference signal transmission parameter sets of N (less than or equal to 10) paired users, so that the complexity of blind detection of the terminal is reduced.
In a specific embodiment of the present invention, the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user PDSCH and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
In an embodiment of the present invention, in order to further reduce the notification overhead of the demodulation reference signal transmission parameter set of the selected paired user, N may be less than or equal to 8, and the length of the parameter transmission field is less than or equal to 3 bits.
When N is less than or equal to 8, the parameter transmission field for notifying the selected demodulation reference signal transmission parameter set of the paired user only needs 3 bits, or even less, thereby reducing the overhead of transmitting the demodulation reference signal transmission parameter set of the paired user.
This is explained in further detail below.
In the first embodiment of the present invention, the set of transmission parameters of the demodulation reference signal of the paired users includes a port number of the demodulation reference signal, a sequence number of the demodulation reference signal sequence, and a length of an orthogonal mask sequence.
When the set of demodulation reference signal transmission parameters of the paired users includes the port parameter and the scrambling code sequence parameter, the combination thereof is as shown in table 1 below.
Value taking Demodulation reference signal transmission parameter set of paired users
0 Layer (b): 1, port: 7, scrambling sequence: nSCID ═ 0, OCC ═ 2
1 Layer (b): 1, port: 7, scrambling sequence: nSCID ═ 1 and OCC ═ 2
2 Layer (b): 1, port: 8, scrambling sequence: nSCID ═ 0, OCC ═ 2
3 Layer (b): 1, port: 8, scrambling sequence: nSCID ═ 1 and OCC ═ 2
4 Layer (b): 1, port: 7, scrambling sequence: nSCID ═ 0, OCC ═ 4
5 Layer (b): 1, port: 7, scrambling sequence: nSCID ═ 1, OCC ═ 4
6 Layer (b): 1, port: 8, scrambling sequence: nSCID ═ 0, OCC ═ 4
7 Layer (b): 1, port: 8, scrambling sequence: nSCID ═ 1, OCC ═ 4
8 Layer (b): 1, port: 11, scrambling sequence: nSCID ═ 0, OCC ═ 4
9 Layer (b): 1, port: 11, scrambling sequence: nSCID ═ 1, OCC ═ 4
10 Layer (b): 1, port: 13, scrambling sequence: nSCID ═ 0, OCC ═ 4
11 Layer (b): 1, port: 13, scrambling sequence: nSCID ═ 1, OCC ═ 4
Table 1: optional transmission parameter table of reference signal
As shown in table 1 above, it can be seen that, when the setting condition is that the ports are the same, the alternative schemes for the demodulation reference signal transmission parameter sets of the paired users are as follows:
when the number of the ports is 7, the number of the alternatives is 3;
when the number of the ports is 8, the number of the alternatives is 3;
when the number of the ports is 11, the number of the alternatives is 1;
with 13 ports, the number of alternatives is 1.
That is, after the screening condition with the same port is set, the length of the parameter transmission field may be set to 2 bits, which is smaller than the 4 bits in the prior art.
The parameter field may also be used to indicate the case where there are no paired users, collectively constituting 4 options.
As shown in table 1 above, it can be seen that, when the demodulation reference signal sequence numbers (nSCID) in the scrambling sequence parameters are the same, the alternative schemes for the set of demodulation reference signal transmission parameters of the paired users are as follows:
when the serial number of the demodulation reference signal sequence is 0, 5 alternative schemes are adopted;
when the serial number of the demodulation reference signal sequence is 1, 5 alternative schemes are adopted;
that is, after the filtering condition with the same sequence number of the demodulation reference signal is set, the length of the parameter transmission field may be set to 3 bits, which is smaller than 4 bits in the prior art.
As shown in table 1 above, it can be seen that, when the orthogonal mask sequence length in the scrambling sequence parameter is the same, the alternative schemes for the demodulation reference signal transmission parameter group of the paired users are as follows:
when the length of an orthogonal code sequence (OCC) is 2, the number of alternatives is 3;
when the length of an orthogonal code sequence (OCC) is 4, the number of alternatives is 7;
that is, after the screening conditions having the same orthogonal mask sequence length are set, the length of the parameter transmission field may be set to 3 bits, which is smaller than the 4 bits in the related art.
Of course, as previously described, this parameter field may also be used to indicate the case where there is no paired user.
Therefore, in the first embodiment of the present invention, for convenience of selection, it may be provided that: in the demodulation reference signal transmission parameter group of each paired user in the demodulation reference signal transmission parameter groups of the N paired users and the demodulation reference signal parameter group of the service user, one or two of the demodulation reference signal port number, the demodulation reference signal sequence number and the length of the orthogonal mask sequence are the same, that is, the length of the parameter transmission field can be reduced to 3 bits, even only 1 bit is required.
Of course, when the port number of the demodulation reference signal is the same as more parameters in the demodulation reference signal sequence number and the length of the orthogonal mask sequence, the size of the transmission parameter set of the demodulation reference signal of the screened paired users can be further reduced, and the length of the parameter transmission field can be reduced.
If the screening condition that the demodulation reference signal sequence number and the orthogonal mask sequence length are the same is set, the alternatives of the demodulation reference signal transmission parameter group of the paired users only remain:
when the serial number of the demodulation reference signal sequence is 0 and the length of the orthogonal mask sequence is 2, 1 alternative is adopted;
when the serial number of the demodulation reference signal sequence is 0 and the length of the orthogonal mask sequence is 4, the number of the optional schemes is 3;
when the serial number of the demodulation reference signal sequence is 1 and the length of the orthogonal mask sequence is 2, 1 alternative is selected;
when the demodulation reference signal sequence number is 1 and the length of the orthogonal mask sequence is 4, the alternative is 3.
Of course, it should be understood that the demodulation reference signal transmission parameter sets of the N paired users may also be arbitrarily selected from the 12 reference signal transmission schemes, and are not particularly limited herein.
Of course, at least which scheme selected from the 12 reference signal transmission schemes described above forms the demodulation reference signal transmission parameter set of the N paired users described above may be selected according to needs and/or practical situations, and will not be described in detail herein.
In the specific embodiment of the present invention, when 2N(N is the number of bits of the parameter transmission field) is greater than the optional demodulation reference signal transmission parameterThe parameter field may also be used to indicate the case of no paired users, when the number of arrays. The subsequent embodiments are also applicable and will not be described repeatedly later.
As already mentioned before, the current MUST technology includes three transmission modes, among which:
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technology in the third mode is a demodulation reference signal transmission parameter group of a paired user of the multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
Therefore, in the first embodiment of the present invention, in order to better utilize the multi-user interference cancellation performance and reduce the blind detection complexity of the terminal, the same DCI is designed for the three modes of the MUST transmission technology. Since the parameters transmitted by the different modes of the MUST transmission technology are different, the fields need to be multiplexed.
Therefore, in the first embodiment of the present invention, the method further includes:
when a network side transmits data to user equipment based on a multi-user superposition transmission technology in a second mode or a third mode, assigning a value to the parameter transmission field according to a power distribution parameter used in the transmission;
and transmitting the downlink control information to the user equipment.
After the downlink control information is transmitted to the user equipment, the user equipment can determine a power distribution parameter used in the current transmission through the parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode;
the second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
That is, when the network side transmits data to the user equipment based on the multi-user superposition transmission technology of the first mode, the user equipment can determine the demodulation reference signal transmission parameter group of the paired user used in the current transmission through the parameter transmission field, and when the network side transmits data to the user equipment based on the multi-user superposition transmission technology of the second or third mode, the user equipment can determine the power allocation parameter used in the current transmission through the parameter transmission field.
And the end user equipment can carry out MUST transmission of the corresponding mode according to the determined demodulation reference signal transmission parameter group or the power distribution parameter of the paired user.
As already mentioned, the current MUST technology includes three transmission modes, and what transmission mode is used for transmission between the network side and the ue at this time needs the network side to notify the ue through the mode indication parameter, so that the ue can determine the transmission mode of the transmission and the parameter transmitted by the parameter transmission field.
That is, the first embodiment of the present invention further includes:
and transmitting the mode indication parameter of the multi-user superposition transmission technology used in the transmission to the user equipment.
After transmitting the mode indication parameter of the multi-user superposition transmission technology used in the current transmission to the user equipment, the user equipment can determine the mode of the multi-user superposition transmission technology used in the current transmission, and determine the parameter type transmitted by the parameter transmission field according to the mode of the multi-user superposition transmission technology used in the current transmission.
The mode indication parameter is transmitted through a mode indication field in a high-level signaling or the downlink control information.
A detailed DCI structure including a mode indication parameter and a parameter transmission field (not all fields listed) is as follows.
Figure GDA0001691939300000081
A transmission processing method according to a second embodiment of the present invention is applied to a user equipment side, and as shown in fig. 2, includes:
step 201, receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
step 202, determining a demodulation reference signal transmission parameter set of a paired user used for transmission this time, which is selected from demodulation reference signal transmission parameter sets of paired users usable by N paired users, according to a parameter transmission field in the downlink control information;
step 203, receiving the first downlink data transmitted by the network side based on the multi-user superposition transmission technology in the first mode through the demodulation reference signal transmission parameter set of the paired user used in the current transmission.
In the second embodiment of the present invention, compared with the prior art, the network side selects from the sets of the demodulation reference signal transmission parameters of the 12 paired users for the user equipment no longer, but selects from the sets of the demodulation reference signal transmission parameters of the N (less than or equal to 10) paired users, so that the complexity of selection is reduced.
In a specific embodiment of the present invention, the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user PDSCH and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
And when N is less than or equal to 8, the parameter transmission field for notifying the selected demodulation reference signal transmission parameter group of the paired user only needs 3 bits, even less, thereby reducing the overhead of transmitting the demodulation reference signal transmission parameter group of the paired user.
In a second embodiment of the present invention, the set of transmission parameters of the demodulation reference signal of the paired users includes a port number of the demodulation reference signal, a sequence number of the demodulation reference signal sequence, and a length of an orthogonal mask sequence.
In the transmission processing method, in the demodulation reference signal transmission parameter set of the N paired users, in the demodulation reference signal transmission parameter set of each paired user and the demodulation reference signal parameter set of the serving user, one or two of a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length are the same.
In the second embodiment of the present invention, in order to better utilize the multi-user interference cancellation performance and reduce the complexity of blind detection of a terminal, the same DCI is designed for the MUST transmission technologies in three modes, multiplexing of parameter transmission fields is implemented, and the complexity of system design is reduced, in this case, the method of the second embodiment of the present invention further includes:
receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a second mode or a third mode transmits data to user equipment;
determining the power distribution parameters used for the current transmission according to the parameter transmission fields in the downlink control information;
and receiving second downlink data transmitted by the network side based on the multi-user superposition transmission technology of the second mode or the third mode according to the power distribution parameter.
The second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission.
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
As already mentioned, the current MUST technology includes three transmission modes, and what transmission mode is used for transmission between the network side and the ue at this time needs the network side to notify the ue through the mode indication parameter, so that the ue can determine the transmission mode of the transmission and the parameter transmitted by the parameter transmission field.
Therefore, the transmission processing method according to the second embodiment of the present invention further includes:
receiving a mode indication parameter of a multi-user superposition transmission technology used in the transmission;
determining the mode of the multi-user superposition transmission technology used for the transmission according to the mode indication parameter;
and determining the parameter type of the parameter transmission field according to the mode of the multi-user superposition transmission technology used in the current transmission.
The mode indication parameter may be transmitted through a mode indication field in a higher layer signaling or the downlink control information.
A network side device according to a third embodiment of the present invention, as shown in fig. 3, includes:
a first parameter determining module, configured to determine, when data is transmitted to a user equipment based on a multi-user superposition transmission technique in a first mode, a demodulation reference signal transmission parameter set of a paired user used for transmission from demodulation reference signal transmission parameter sets of paired users usable by N paired users; said N is less than or equal to 10;
a first assignment module, configured to assign a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter set of a paired user used in the current transmission;
and the first transmission module is used for transmitting the downlink control information to the user equipment.
After the downlink control information is sent to the user equipment, the user equipment can determine a demodulation reference signal transmission parameter set of a paired user used for the transmission through a parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the first mode.
In the above network side device, the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission;
in the above network-side device, N is less than or equal to 8, and the length of the parameter transmission field is less than or equal to 3 bits.
In the above network side device, the set of transmission parameters of the demodulation reference signal of the paired users includes a port number of the demodulation reference signal, a sequence number of the demodulation reference signal sequence, and a length of the orthogonal mask sequence.
In the above network side device, in the demodulation reference signal transmission parameter sets of the N paired users, in the demodulation reference signal transmission parameter set of each paired user and the demodulation reference signal parameter set of the serving user, one or two of the demodulation reference signal port number, the demodulation reference signal sequence number, and the orthogonal mask sequence length are the same.
The above network side device further includes:
the second assignment module is used for assigning the parameter transmission field according to the power distribution parameter used in the current transmission when the multi-user superposition transmission technology based on the second mode or the third mode transmits data to the user equipment;
a second transmission module, configured to transmit the downlink control information to the ue, so that the ue can determine, through the parameter transmission field, a power allocation parameter used in this transmission, so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode.
After the downlink control information is transmitted to the user equipment, the user equipment can determine the power allocation parameter used in the current transmission through the parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode.
The second mode of the multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The above network side device further includes:
and the third transmission module is used for transmitting the mode indication parameter of the multi-user superposition transmission technology used in the transmission to the user equipment.
After transmitting the mode indication parameter of the multi-user superposition transmission technology used in the current transmission to the user equipment, the user equipment can determine the mode of the multi-user superposition transmission technology used in the current transmission, and determine the parameter type transmitted by the parameter transmission field according to the mode of the multi-user superposition transmission technology used in the current transmission.
In the foregoing network side device, the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
A user equipment according to a fourth embodiment of the present invention, as shown in fig. 4, includes:
the first receiving module is used for receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
a second parameter determining module, configured to determine, according to the parameter transmission field in the downlink control information, a demodulation reference signal transmission parameter group of a paired user selected from demodulation reference signal transmission parameter groups of paired users available to the N paired users and used for the current transmission;
and the second receiving module is used for receiving the first downlink data transmitted by the network side based on the multi-user superposition transmission technology in the first mode through the demodulation reference signal transmission parameter group of the paired users used in the current transmission.
In the foregoing user equipment, the first mode multi-user superposition transmission technique is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission scheme but different spatial precoding vectors for transmission
The user equipment, wherein the set of demodulation reference signal transmission parameters of the paired user includes a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length.
In the above user equipment, in the demodulation reference signal transmission parameter sets of the N paired users, in the demodulation reference signal transmission parameter set of each paired user and the demodulation reference signal parameter set of the serving user, one or two of the demodulation reference signal port number, the demodulation reference signal sequence number, and the orthogonal mask sequence length are the same.
The above user equipment, among others, further includes:
a third receiving module, configured to receive downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on the second mode or the third mode transmits data to a user equipment;
a third parameter determining module, configured to determine a power allocation parameter used in the current transmission according to the parameter transmission field in the downlink control information;
a fourth receiving module, configured to receive, according to the power allocation parameter, second downlink data transmitted by the network side based on the multi-user superposition transmission technology in the second mode or the third mode;
the second mode of the multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The above user equipment, among others, further includes:
a fifth receiving module, configured to receive a mode indication parameter of a multi-user superposition transmission technique used in the current transmission;
the mode determining module is used for determining the mode of the multi-user superposition transmission technology used in the current transmission according to the mode indication parameter;
and the type determining module is used for determining the parameter type of the parameter transmission field transmission according to the mode of the multi-user superposition transmission technology used in the current transmission.
In the above user equipment, the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
An embodiment of the present invention further provides a transmission processing method, used on a network side, including:
when the multi-user superposition transmission technology based on the second mode or the third mode transmits data to user equipment, assigning a value to a parameter transmission field in downlink control information according to a power distribution parameter used in the transmission;
and transmitting the downlink control information to the user equipment.
After the downlink control information is transmitted to the user equipment, the user equipment can determine the power allocation parameter used in the current transmission through the parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode.
The second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector; the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
An embodiment of the present invention further provides a transmission processing method, which is used on a user equipment side, and includes:
receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a second mode or a third mode transmits data to user equipment;
determining power distribution parameters used for the transmission according to parameter transmission fields in the downlink control information;
and receiving second downlink data transmitted by the network side based on the multi-user superposition transmission technology of the second mode or the third mode according to the power distribution parameter.
The second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
An embodiment of the present invention further provides a network side device, including:
the second assignment module is used for assigning the parameter transmission field according to the power distribution parameter used in the current transmission when the multi-user superposition transmission technology based on the second mode or the third mode transmits data to the user equipment;
and the second transmission module is used for transmitting the downlink control information to the user equipment.
After the downlink control information is transmitted to the user equipment, the user equipment can determine the power allocation parameter used in the current transmission through the parameter transmission field so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode.
The second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
An embodiment of the present invention further provides a user equipment, including:
a third receiving module, configured to receive downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on the second mode or the third mode transmits data to a user equipment;
a third parameter determining module, configured to determine a power allocation parameter used in the current transmission according to a parameter transmission field in the downlink control information;
and a fourth receiving module, configured to receive, according to the power allocation parameter, second downlink data transmitted by the network side based on the multi-user superposition transmission technology in the second mode or the third mode.
Wherein: the second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector; the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The MUST technique refers to that multiple data streams of multiple users are transmitted on the same time/frequency/space resource, e.g. different user equipments are multiplexed on the same spatial beam. Since the number of users simultaneously transmitting increases after using the MUST technique, the overall number of user connections can be increased.
Current MUST technology includes three transmission modes, among them:
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The multi-user superposition transmission techniques of the second mode and the third mode require power allocation parameters, while the multi-user superposition transmission technique of the first mode does not require power allocation parameters, but requires transmission of a demodulation reference signal transmission parameter set of a paired user including a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length.
In order to reduce the complexity of system design, in the embodiment of the present invention, DCI with the same format is set for different modes of transmit MUST, and a parameter transmission field is used to correspond to different parameter transmissions of different multi-user superposition transmission modes, that is: the parameter transmission field transmits different types of parameters corresponding to different multi-user superposition transmission modes.
A transmission processing method according to a fifth embodiment of the present invention is applied to a network side, and as shown in fig. 5, the transmission processing method includes:
step 501, determining a target mode used when data is transmitted to user equipment from at least two multi-user superposition transmission modes;
step 502, transmitting downlink control information at least comprising a parameter transmission field to the user equipment.
After transmitting downlink control information at least comprising a parameter transmission field to the user equipment, the user equipment can acquire parameters required by receiving downlink data transmitted by a network side through multi-user superposition transmission of the target mode through the downlink control information.
The downlink control information at least comprises a parameter transmission field corresponding to different multi-user superposition transmission modes, and the types of parameters transmitted by the parameter transmission field are different.
In the embodiment of the invention, according to the currently used MUST mode, different parameters are transmitted by using the parameter transmission field, DCI with one format is realized to correspond to different MUST modes, and the complexity of system design is reduced.
In this document, it should be understood that the parameter transmission field is used to transmit a certain parameter, and does not mean that the value in the parameter transmission field is the value of the parameter itself to be transmitted, but only means that the opposite end can determine the parameter to be transmitted according to the parameter transmission field.
Illustrated in power allocation as follows.
Assume that the power allocation ratio between the user equipments a and B includes the following four cases: 1:1, 1:2, 1:3, and 1:4, and the length of the parameter transmission field is 2 bits, 00 is used to indicate a first power allocation ratio, 01 indicates a second power allocation ratio, 10 indicates a third power allocation ratio, and 11 indicates a fourth power allocation ratio.
When the value transmitted by the parameter transmission field analyzed by the user equipment is 00, the power distribution ratio with the other terminal can be determined to be 1: 1.
As mentioned above, the existing MUST technology includes multiple transmission modes, and what transmission mode is used for transmission between the network side and the ue at this time needs the network side to notify the ue through the mode indication parameter, so that the ue can determine the transmission mode of the transmission and the parameter transmitted by the parameter transmission field.
Therefore, the transmission processing method according to the fifth embodiment of the present invention further includes:
transmitting a mode indication parameter of the target mode to the user equipment.
After transmitting the mode indication parameter of the target mode to the user equipment, the user equipment can determine the target mode and the type of the parameter transmitted by the parameter transmission field.
The mode indication parameter may be transmitted to the ue through a mode indication field in a higher layer signaling or the downlink control information.
In a fifth embodiment of the present invention, when the target mode is a first mode, the parameter transmission field is used to transmit a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length, and when the target mode is a second mode or a third mode, the parameter transmission field is used to transmit a power allocation parameter;
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
In the fifth embodiment of the present invention, the length of the parameter transmission field may be set according to the parameter to be transmitted, so as to satisfy the transmission requirements of all the parameters to be transmitted.
If it is assumed that the parameter a2 to be transmitted requires 4 bits for the mode a1 and 2 bits for the parameter B2 to be transmitted for the mode B1, the length of the parameter transmission field is set to 4 bits.
Whereas for the first mode described above, it requires 4 bits to transmit the demodulation reference signal port number, the demodulation reference signal sequence number, and the orthogonal mask sequence length, and for the second and third modes, it requires 2 bits to transmit the power allocation parameter, the length of the transmission field may be set to 4 bits.
In order to reduce the overhead, in a fifth embodiment of the present invention, the length of the parameter transmission field may be set to be less than or equal to 3 bits, and a reference signal design scheme of the third mode may be screened to meet the transmission requirement.
This is exemplified as follows.
In a fifth embodiment of the present invention, the set of transmission parameters of the demodulation reference signal of the paired users includes a port number of the demodulation reference signal, a sequence number of the demodulation reference signal sequence, and a length of an orthogonal mask sequence.
When the set of demodulation reference signal transmission parameters of the paired users includes the port parameter and the scrambling code sequence parameter, the combination thereof is as shown in table 2 below.
Figure GDA0001691939300000171
Figure GDA0001691939300000181
Table 2: optional transmission parameter table of reference signal
As shown in table 2 above, it can be seen that, when the setting condition is that the ports are the same, the alternative schemes for the demodulation reference signal transmission parameter sets of the paired users are as follows:
when the number of the ports is 7, the number of the alternatives is 3;
when the number of the ports is 8, the number of the alternatives is 3;
when the number of the ports is 11, the number of the alternatives is 1;
with 13 ports, the number of alternatives is 1.
That is, after the screening condition with the same port is set, the length of the parameter transmission field may be set to 2 bits, which is smaller than the 4 bits in the prior art.
As shown in table 1 above, it can be seen that, when the setting condition is that the reference signal scrambling codes ID in the scrambling code sequence parameters are the same, the alternatives of the demodulation reference signal transmission parameter group of the paired users are as follows:
when the serial number of the demodulation reference signal sequence is 0, 5 alternative schemes are adopted;
when the serial number of the demodulation reference signal sequence is 1, 5 alternative schemes are adopted;
that is, after the filtering condition with the same sequence number of the demodulation reference signal is set, the length of the parameter transmission field may be set to 3 bits, which is smaller than 4 bits in the prior art.
As shown in table 1 above, it can be seen that, when the orthogonal mask sequence length in the scrambling sequence parameter is the same, the alternative schemes for the demodulation reference signal transmission parameter group of the paired users are as follows:
when the length of the orthogonal mask sequence is 2, the alternative schemes are 3;
when the length of the orthogonal mask sequence is 4, the alternative is 7;
that is, after the screening conditions having the same orthogonal mask sequence length are set, the length of the parameter transmission field may be set to 3 bits.
Therefore, in the fifth embodiment of the present invention, for convenience of selection, in an alternative of the set of demodulation reference signal transmission parameters of the paired users when the target mode is the first mode, one or two of the port number of the demodulation reference signal, the sequence number of the demodulation reference signal sequence, and the length of the orthogonal mask sequence in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal transmission parameters of the serving user are the same.
Of course, when more parameters of the port number of the demodulation reference signal, the sequence number of the demodulation reference signal sequence and the length of the orthogonal mask sequence are the same, the size of the transmission parameter set of the demodulation reference signal of the screened paired users can be further reduced, and the length of the parameter transmission field can be reduced.
If the screening condition that the demodulation reference signal sequence number and the orthogonal mask sequence length are the same is set, the alternatives of the demodulation reference signal transmission parameter group of the paired users only remain:
when the serial number of the demodulation reference signal sequence is 0 and the length of the orthogonal mask sequence is 2, 1 alternative is adopted;
when the serial number of the demodulation reference signal sequence is 0 and the length of the orthogonal mask sequence is 4, the number of the optional schemes is 3;
when the serial number of the demodulation reference signal sequence is 1 and the length of the orthogonal mask sequence is 2, 1 alternative is selected;
when the demodulation reference signal sequence number is 1 and the length of the orthogonal mask sequence is 4, the alternative is 3.
Of course, it should be understood that the demodulation reference signal transmission parameter sets of the N paired users may also be arbitrarily selected from the 12 reference signal transmission schemes, and are not particularly limited herein.
Of course, at least which scheme selected from the 12 reference signal transmission schemes described above forms the demodulation reference signal transmission parameter set of the N paired users described above may be selected according to needs and/or practical situations, and will not be described in detail herein.
That is, the fifth embodiment of the present invention provides the following 6 technical solutions, as follows:
a1, a transmission processing method, for a network side, comprising:
step 501, determining a target mode used when data is transmitted to user equipment from at least two multi-user superposition transmission modes;
step 502, transmitting downlink control information at least comprising a parameter transmission field to the user equipment.
After downlink control information at least comprising a parameter transmission field is transmitted to the user equipment, the user equipment can acquire parameters required by receiving downlink data transmitted by a network side through multi-user superposition transmission of the target mode through the downlink control information;
the downlink control information at least comprises a parameter transmission field corresponding to different multi-user superposition transmission modes, and the types of parameters transmitted by the parameter transmission field are different.
A2, the method for processing transmission according to a1, further comprising:
transmitting a mode indication parameter of the target mode to the user equipment.
After transmitting the mode indication parameter of the target mode to the user equipment, the user equipment can determine the target mode and the type of the parameter transmitted by the parameter transmission field.
A3, the transmission processing method according to A2, wherein the mode indication parameter is transmitted to the UE via a higher layer signaling or a mode indication field in the downlink control information.
A4, the method for processing transmission according to A1, wherein,
when the target mode is a first mode, the parameter transmission field is used for transmitting a demodulation reference signal port number, a demodulation reference signal sequence number and an orthogonal mask sequence length, and when the target mode is a second mode or a third mode, the parameter transmission field is used for transmitting a power distribution parameter;
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the third mode of the multi-user superposition transmission technique uses the same transmission diversity scheme for the serving user PDSCH and the paired user PDSCH
A5, the method for processing transmission according to a4, wherein the length of the parameter transmission field is less than or equal to 3 bits.
A6, the transmission processing method according to a4, wherein when the target mode is the first mode, in the alternative of the set of demodulation reference signal transmission parameters of the paired users, one or two of the port number of the demodulation reference signal, the sequence number of the demodulation reference signal sequence, and the length of the orthogonal mask sequence are the same for each set of demodulation reference signal transmission parameters of the paired users and the set of demodulation reference signal parameters of the serving user.
A transmission processing method according to a sixth embodiment of the present invention is applied to a user equipment side, and as shown in fig. 6, includes:
601, receiving downlink control information which is transmitted by a network side and at least comprises a parameter transmission field after a target mode used when data is transmitted to user equipment is determined from at least two multi-user superposition transmission modes; the types of the parameters transmitted by the parameter transmission field are different corresponding to different multi-user superposition transmission modes;
step 602, acquiring the parameters transmitted by the parameter transmission field;
step 603, receiving the downlink data transmitted by the network side through the multi-user superposition transmission of the target mode through the parameter transmitted by the parameter transmission field.
The transmission processing method further includes:
receiving a mode indication parameter of the target mode sent by a network side;
and determining the target mode and the type of the parameter transmitted by the parameter transmission field according to the mode indication parameter.
In the transmission processing method, the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
In the transmission processing method, when the target mode is a first mode, the parameter transmission field is used to transmit a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length, and when the target mode is a second mode or a third mode, the parameter transmission field is used to transmit a power allocation parameter;
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
In the transmission processing method, the length of the parameter transmission field is less than or equal to 3 bits.
In the foregoing transmission processing method, when the target mode is the first mode, in an alternative of the set of demodulation reference signal transmission parameters of the paired users, in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user, one or two of a port number of a demodulation reference signal, a sequence number of a demodulation reference signal sequence, and a length of an orthogonal mask sequence are the same.
A network side device according to a seventh embodiment of the present invention, as shown in fig. 7, includes:
a mode determining module, configured to determine a target mode used when data is transmitted to a user equipment from at least two multi-user superposition transmission modes;
a fourth transmission module, configured to transmit downlink control information at least including a parameter transmission field to the ue;
the downlink control information at least comprises a parameter transmission field corresponding to different multi-user superposition transmission modes, and the types of parameters transmitted by the parameter transmission field are different.
After downlink control information at least comprising a parameter transmission field is transmitted to the user equipment, the user equipment can acquire parameters required by receiving downlink data transmitted by a network side through multi-user superposition transmission of the target mode through the downlink control information;
the above network side device further includes:
a fifth transmitting module, configured to transmit the mode indication parameter of the target mode to the ue, so that the ue can determine the target mode and the type of the parameter transmitted by the parameter transmission field.
After transmitting the mode indication parameter of the target mode to the user equipment, the user equipment can determine the target mode and the type of the parameter transmitted by the parameter transmission field.
In the foregoing network side device, the mode indication parameter is transmitted to the user equipment through a high layer signaling or a mode indication field in the downlink control information.
The above-mentioned network side device, wherein,
when the target mode is a first mode, the parameter transmission field is used for transmitting a demodulation reference signal port number, a demodulation reference signal sequence number and an orthogonal mask sequence length, and when the target mode is a second mode or a third mode, the parameter transmission field is used for transmitting a power distribution parameter;
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
In the foregoing network-side device, the length of the parameter transmission field is less than or equal to 3 bits.
In the above network side device, when the target mode is the first mode, in an alternative of the set of demodulation reference signal transmission parameters of the paired users, in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user, one or two of a port number of a demodulation reference signal, a sequence number of a demodulation reference signal sequence, and a length of an orthogonal mask sequence are the same.
As shown in fig. 8, the user equipment according to the eighth embodiment of the present invention includes:
a sixth receiving module, configured to receive downlink control information that is transmitted by a network side and includes at least a parameter transmission field after determining a target mode used when transmitting data to a user equipment from at least two types of multi-user superposition transmission modes; the types of the parameters transmitted by the parameter transmission field are different corresponding to different multi-user superposition transmission modes;
the parameter acquisition module is used for acquiring the parameters transmitted by the parameter transmission field;
a seventh receiving module, configured to receive, through the parameter transmitted by the parameter transmission field, the downlink data transmitted by the network side through the multi-user superposition transmission in the target mode.
The above user equipment, among others, further includes:
an eighth receiving module, configured to receive a mode indication parameter of the target mode sent by a network side;
and the target mode and type determining module is used for determining the target mode and the type of the parameter transmitted by the parameter transmission field according to the mode indication parameter.
In the above user equipment, the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
In the above user equipment, when the target mode is a first mode, the parameter transmission field is used to transmit a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length, and when the target mode is a second mode or a third mode, the parameter transmission field is used to transmit a power allocation parameter;
the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user PDSCH and a paired user PDSCH by using the same transmission mechanism but different space precoding vectors;
the multi-user superposition transmission technology in the second mode is a multi-user superposition transmission technology in which the serving user PDSCH and the paired user PDSCH use the same transmission mechanism and the same spatial precoding vector for transmission;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
The above user equipment, wherein the length of the parameter transmission field is less than or equal to 3 bits.
In the above user equipment, when the target mode is the first mode, in an alternative of the set of demodulation reference signal transmission parameters of the paired users, one or two of the port number of the demodulation reference signal, the sequence number of the demodulation reference signal sequence, and the length of the orthogonal mask sequence in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user are the same.
The embodiment of the invention also provides a transmission processing method, which is used for a network side and comprises the following steps:
when data are transmitted to user equipment based on a multi-user superposition transmission technology in a first mode, determining a demodulation reference signal transmission parameter set of a paired user used for transmission at this time from a demodulation reference signal transmission parameter set available for N paired users; said N is less than or equal to 10; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
The transmission processing method further includes:
and sending indication information to the user equipment, wherein the indication information indicates whether a paired user exists, and when the paired user exists, the indication information indicates that the user equipment transmits a demodulation reference signal transmission parameter group which can be used by N paired users used by the data transmission.
An embodiment of the present invention further provides a transmission processing method, which is used on a user equipment side, and includes:
determining a demodulation reference signal transmission parameter group of a paired user used for transmission at this time selected from demodulation reference signal transmission parameter groups of N usable paired users by adopting a blind detection mode; said N is less than or equal to 10;
receiving first downlink data transmitted by a network side based on a multi-user superposition transmission technology of a first mode through a demodulation reference signal transmission parameter group of the paired users used for the transmission; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
The transmission processing method further includes:
and receiving indication information sent by a network side, and determining a demodulation reference signal transmission parameter group which can be used by the N paired users according to the indication information.
An embodiment of the present invention further provides a network side device, including:
a selection module, configured to determine, when data is transmitted to a user equipment based on a multi-user superposition transmission technique in a first mode, a demodulation reference signal transmission parameter set of a paired user used for transmission from demodulation reference signal transmission parameter sets usable by N paired users; said N is less than or equal to 10; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
The above network side device further includes:
and the demodulation reference signal transmission parameter group indicating module is used for sending indication information to the user equipment, wherein the indication information indicates whether paired users exist or not, and when the paired users exist, the indication information indicates that the user equipment indicates that the demodulation reference signal transmission parameter group which can be used by N paired users used for data transmission at this time can be used.
An embodiment of the present invention further provides a user equipment, including:
a blind detection module, configured to determine, in a blind detection manner, a demodulation reference signal transmission parameter set of a paired user selected from demodulation reference signal transmission parameter sets of N available paired users for the current transmission; said N is less than or equal to 10;
a data receiving module, configured to receive, by using the demodulation reference signal transmission parameter set of the paired users used in the current transmission, first downlink data transmitted by a network side based on a multi-user superposition transmission technology in a first mode; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
The above user equipment further includes:
an indication receiving module, configured to receive indication information sent by a network side, where the indication information indicates whether there is a paired user, and when there is a paired user, indicates that the user equipment transmits a demodulation reference signal transmission parameter group that is usable by N paired users used in this data transmission.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

Claims (24)

1. A transmission processing method, used on a network side, comprising:
when data are transmitted to user equipment based on a multi-user superposition transmission technology in a first mode, determining a demodulation reference signal transmission parameter set of a paired user used for transmission at this time from a demodulation reference signal transmission parameter set available for N paired users; said N is less than or equal to 10; the multi-user superposition transmission technology in the first mode is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission;
assigning a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter group of a paired user used for the transmission;
and transmitting the downlink control information to the user equipment, so that the user equipment can determine a demodulation reference signal transmission parameter group of a paired user used for the transmission through a parameter transmission field, so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the first mode.
2. The transmission processing method according to claim 1, wherein N is less than or equal to 8, and the length of the parameter transmission field is less than or equal to 3 bits.
3. The transmission processing method according to claim 1, wherein the set of demodulation reference signal transmission parameters of the paired users at least includes a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length.
4. The transmission processing method according to claim 3, wherein in the set of demodulation reference signal transmission parameters of the paired users available to the N paired users, in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user, one or both of the port number \ demodulation reference signal sequence number and the length of the orthogonal mask sequence of the demodulation reference signal are the same.
5. The transmission processing method according to claim 1, further comprising:
when the multi-user superposition transmission technology based on the second mode or the third mode transmits data to user equipment, assigning a value to the parameter transmission field according to a power distribution parameter used in the current transmission;
transmitting the downlink control information to the user equipment, so that the user equipment can determine a power allocation parameter used in the current transmission through the parameter transmission field to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode;
the second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
6. The transmission processing method according to any one of claims 1 to 5, further comprising:
and transmitting the mode indication parameter of the multi-user superposition transmission technology used in the transmission to the user equipment, so that the user equipment can determine the mode of the multi-user superposition transmission technology used in the transmission, and determine the parameter type transmitted by the parameter transmission field according to the mode of the multi-user superposition transmission technology used in the transmission.
7. The transmission processing method according to claim 6, wherein the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
8. A transmission processing method is used for a user equipment side, and is characterized by comprising the following steps:
receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
determining a demodulation reference signal transmission parameter group of a paired user used for transmission at this time, which is selected from demodulation reference signal transmission parameter groups of paired users usable by N paired users, according to a parameter transmission field in the downlink control information; said N is less than or equal to 10;
receiving first downlink data transmitted by a network side based on a multi-user superposition transmission technology of a first mode through a demodulation reference signal transmission parameter group of the paired users used for the transmission; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
9. The transmission processing method according to claim 8, wherein N is less than or equal to 8, and the length of the parameter transmission field is less than or equal to 3 bits.
10. The transmission processing method according to claim 8, wherein the set of demodulation reference signal transmission parameters of the paired users at least includes a demodulation reference signal port number, a demodulation reference signal sequence number, and an orthogonal mask sequence length.
11. The transmission processing method according to claim 10, wherein, in the set of demodulation reference signal transmission parameters usable by the N paired users, in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user, one or both of the port number \ the sequence number of the demodulation reference signal sequence and the length of the orthogonal mask sequence are the same.
12. The transmission processing method according to claim 8, further comprising:
receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a second mode or a third mode transmits data to user equipment;
determining the power distribution parameters used for the current transmission according to the parameter transmission fields in the downlink control information;
receiving second downlink data transmitted by the network side based on the multi-user superposition transmission technology of the second mode or the third mode according to the power distribution parameter;
the second mode of multi-user superposition transmission technology is the multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector;
the multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
13. The transmission processing method according to any one of claims 8 to 12, further comprising:
receiving a mode indication parameter of a multi-user superposition transmission technology used in the transmission;
determining the mode of the multi-user superposition transmission technology used for the transmission according to the mode indication parameter;
and determining the parameter type of the parameter transmission field according to the mode of the multi-user superposition transmission technology used in the current transmission.
14. The transmission processing method according to claim 13, wherein the mode indication parameter is transmitted through a mode indication field in a higher layer signaling or the downlink control information.
15. A network-side device, comprising:
a first parameter determining module, configured to determine, when data is transmitted to a user equipment based on a multi-user superposition transmission technique in a first mode, a demodulation reference signal transmission parameter set of a paired user used for transmission of this time from demodulation reference signal transmission parameter sets usable by N paired users; said N is less than or equal to 10; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH by using the same transmission mechanism but different spatial precoding vectors;
a first assignment module, configured to assign a value to a parameter transmission field in the downlink control information according to a demodulation reference signal transmission parameter set of a paired user used in the current transmission;
a first transmission module, configured to transmit the downlink control information to the ue, so that the ue can determine, through a parameter transmission field, a demodulation reference signal transmission parameter set of a paired user used in the current transmission, so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the first mode.
16. The network-side device of claim 15, wherein N is less than or equal to 8, and wherein the length of the parameter transmission field is less than or equal to 3 bits.
17. The network-side device of claim 15, wherein, in the set of demodulation reference signal transmission parameters usable by the N paired users, in the set of demodulation reference signal transmission parameters of each paired user and the set of demodulation reference signal parameters of the serving user, one or both of a demodulation reference signal port number \ a demodulation reference signal sequence number and an orthogonal mask sequence length are the same.
18. The network-side device of claim 15, further comprising:
the second assignment module is used for assigning the parameter transmission field according to the power distribution parameter used in the current transmission when the multi-user superposition transmission technology based on the second mode or the third mode transmits data to the user equipment;
a second transmission module, configured to transmit the downlink control information to the ue, so that the ue can determine, through the parameter transmission field, a power allocation parameter used in this transmission, so as to receive downlink data transmitted by a network side through the multi-user superposition transmission technology in the second mode or the third mode;
the second mode of the multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
19. The network-side device according to any one of claims 15 to 18, further comprising:
and a third transmission module, configured to transmit a mode indication parameter of the multi-user superposition transmission technique used in the current transmission to the ue, so that the ue can determine the mode of the multi-user superposition transmission technique used in the current transmission, and determine the parameter type of the parameter transmission field transmission according to the mode of the multi-user superposition transmission technique used in the current transmission.
20. A user device, comprising:
the first receiving module is used for receiving downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on a first mode transmits data to user equipment;
a second parameter determining module, configured to determine, according to the parameter transmission field in the downlink control information, a demodulation reference signal transmission parameter set of a paired user selected from among demodulation reference signal transmission parameter sets usable by the N paired users and used for this transmission; said N is less than or equal to 10;
a second receiving module, configured to receive, by using the demodulation reference signal transmission parameter set of the paired users used in the current transmission, first downlink data transmitted by a network side based on a multi-user superposition transmission technology in a first mode; the first mode multi-user superposition transmission technology is a multi-user superposition transmission technology in which a serving user Physical Downlink Shared Channel (PDSCH) and a paired user PDSCH use the same transmission mechanism but different spatial precoding vectors for transmission.
21. The UE of claim 20, wherein N is less than or equal to 8; the length of the parameter transmission field is less than or equal to 3 bits.
22. The UE of claim 20, wherein one or two of the DCRS port number, the DCRS sequence number and the orthogonal mask sequence length are the same for each of the set of DCRS transmission parameters of the N paired users and the set of DCRS transmission parameters of the serving user.
23. The user equipment of claim 20, further comprising:
a third receiving module, configured to receive downlink control information sent by a network side when determining that a multi-user superposition transmission technology based on the second mode or the third mode transmits data to a user equipment;
a third parameter determining module, configured to determine a power allocation parameter used in the current transmission according to the parameter transmission field in the downlink control information;
a fourth receiving module, configured to receive, according to the power allocation parameter, second downlink data transmitted by the network side based on the multi-user superposition transmission technology in the second mode or the third mode;
the second mode of the multi-user superposition transmission technology is a multi-user superposition transmission technology for transmitting the serving user PDSCH and the paired user PDSCH by using the same transmission mechanism and the same spatial precoding vector
The multi-user superposition transmission technique of the third mode is a multi-user superposition transmission technique in which the serving user PDSCH and the paired user PDSCH use the same transmission diversity scheme.
24. The user equipment according to any of claims 20-23, further comprising:
a fifth receiving module, configured to receive a mode indication parameter of a multi-user superposition transmission technique used in the current transmission;
the mode determining module is used for determining the mode of the multi-user superposition transmission technology used in the current transmission according to the mode indication parameter;
and the type determining module is used for determining the parameter type of the parameter transmission field transmission according to the mode of the multi-user superposition transmission technology used in the current transmission.
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