CN106162746B - Multi-user superposition scheduling method and device - Google Patents

Multi-user superposition scheduling method and device Download PDF

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CN106162746B
CN106162746B CN201510158231.XA CN201510158231A CN106162746B CN 106162746 B CN106162746 B CN 106162746B CN 201510158231 A CN201510158231 A CN 201510158231A CN 106162746 B CN106162746 B CN 106162746B
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signaling
dci format
wireless signal
time
frequency
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CN106162746A (en
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张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/08Load balancing or load distribution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel

Abstract

The invention discloses a multi-user superposition scheduling method and a multi-user superposition scheduling device. The UE receives first signaling in the first step, wherein the first signaling indicates auxiliary information of second signaling, and the auxiliary information comprises at least one of { time-frequency position and signaling format }. And in the second step, receiving a second signaling according to the auxiliary information of the second signaling, and determining the associated identifier of the second signaling according to the second signaling. A first wireless signal is received in step three. The first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, the time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling. The invention reduces the load size of the scheduling signaling for the near UE and simultaneously supports relatively independent scheduling between the superposed wireless signals. In addition, the invention avoids the increase of false alarm caused by excessive BD times and reduces the complexity of the UE.

Description

Multi-user superposition scheduling method and device
Technical Field
The present invention relates to a scheduling scheme in a wireless communication system, and in particular, to a method and an apparatus for downlink scheduling for multi-user Superposition (Superposition) based on Long Term Evolution (LTE-Long Term Evolution).
Background
In a conventional 3GPP (3rd Generation Partner Project) cellular system, downlink radio signals of multiple users are implemented by one or more of { TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), CDM (Code Division Multiplexing) }. A new research topic (RP-150496) is introduced in 3GPP R (Release) 13, that is, downlink multi-user superposition, which essentially distinguishes downlink wireless signals of two users by using different transmission powers. The two users typically include a near user (i.e., near the base station) and a far user (i.e., far from the base station), and the base station allocates a lower transmit power for the first signal for the near user while allocating a higher transmit power for the second signal for the far user. The far user directly demodulates the second signal (i.e. the first signal is treated as noise), while the near user firstly demodulates the second signal (considering that the far user of the near user has lower path loss and the decoding success probability is high), then removes the influence of the second signal from the received signal to obtain a residual signal, and decodes the residual signal to obtain the first signal, which is the SIC (Successive Interference Cancellation) algorithm. To perform SIC, a near user needs to obtain scheduling information for a first signal and a second signal-while a far user only needs to obtain scheduling information for the second signal.
In conventional LTE dynamic scheduling, a user obtains scheduling Information of a PDSCH (Physical downlink shared Channel) according to DCI (downlink Control Information) transmitted in a PDCCH (Physical downlink Control Channel) or an EPDCCH (Enhanced PDCCH). For one DCI Payload Size (Payload Size), the UE performs BD (Blind Decoding) to determine a corresponding PDCCH or EPDCCH. Therefore, the maximum number of BDs performed by the UE increases with the number of DCI payload sizes that the UE needs to monitor, and in order to reduce the increase in UE complexity caused by excessive BD number, the base station configures TM (Transmission Mode) for the UE through higher layer signaling, and for each TM, the UE only needs to detect two DCI payload sizes.
For multi-user superposition, one intuitive idea is that the base station adds extra bits in the scheduling DCI for the first signal (for near users) that are used to carry information related to the second signal.
Disclosure of Invention
The inventor finds out through research that in order to obtain scheduling gain, the UE should be capable of dynamically switching between a multi-user superposition state and a non-multi-user superposition state, and the UE pair of multi-user superposition is capable of being dynamically scheduled. Therefore, the above-described intuitive method may face the following problems:
for a given TM, the payload size of the scheduling DCI for the first signal may be as much as 4-multiuser superposition states and 2 non-multiuser superposition states each, thus doubling the maximum number of BDs supported by the UE, increasing the complexity of the UE
In the multiuser superposition state, the payload size of the scheduling DCI for the first signal may be larger-the sum of the number of information bits needed to assist in demodulating the second signal plus the number of scheduling information bits for the first signal is approximately equal to the payload size of 2 legacy DCIs. A larger DCI payload size means a reduction in transmission efficiency.
The present invention provides a solution to the above problems. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
The invention discloses a method for supporting multi-user superposition in UE, which comprises the following steps:
-step a. receiving a first signaling indicating side information of a second signaling, the side information comprising at least one of { time-frequency position, signaling format }
And B, receiving the second signaling according to the auxiliary information of the second signaling, and determining the association identifier of the second signaling according to the second signaling.
-step c. receiving a first wireless signal
The first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, the time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling.
The association identifier of the second signaling is not included in the first signaling.
The essence of the above aspects is: the first signaling indicates information related to the second signaling but not information related to the second wireless signal to reduce a payload size of the first signaling while supporting relatively independent scheduling of the first wireless signal and the second wireless signal. The above-mentioned nature goes against the conventional scheme in the cellular network because the UE cannot receive the downlink wireless signal due to the incorrect reception of 1 of the multiple physical layer signaling. The inventors have found through research that the above-mentioned common general knowledge no longer holds in the multi-user superposition scenario, because the probability of a near user correctly receiving a given DCI for a far user is greater than the probability of a far user correctly receiving the given DCI.
The essence of the above aspect is: the association identifier of the second signaling is not included in the first signaling (the association identifier in LTE includes 16 bits), thereby further reducing the load size of the first signaling. The above two elements are contrary to the common scheme of LTE, because the UE must determine the association id of the physical layer signaling first, and then determine the association information such as CRC, search space, etc. of the physical layer signaling. In the present invention, the association information can indicate through the auxiliary information in the first signaling-on one hand, the load size of the first signaling is reduced, and on the other hand, the BD number is reduced.
For one embodiment, the signaling identifies one or more of { CRC (cyclic Redundancy Check) scrambling code, PDCCH UE-specific search space, EPDCCH UE-specific search space } used to determine corresponding physical layer signaling.
As one embodiment, the first wireless signal and the second wireless signal are transmitted on a PDSCH.
As an embodiment, the signaling Identity is an RNTI (Radio Network Temporary Identity).
As an embodiment, the signaling identity is C (Cell ) -RNTI.
In conventional LTE, the UE determines the PDCCH or EPDCCH occupied by DCI (for each possible payload size) over BD. While excessive BD number may increase the false alarm probability, the time-frequency location and the signaling format in the assistance information may reduce the BD number performed by the UE for the second signaling.
As an embodiment, the signaling format includes one or more of { whether or not CIF (Carrier Indicator Field, Carrier indication Field, Carrier Reference Signal (SRS) request, DCI format, TM }.
As an embodiment, the second signaling transmits the association identifier on the EPDCCH for determining the DMRS sequence of the second signaling. As an embodiment, both the first signaling and the second signaling are transmitted on the EPDCCH, the first signaling and the second signaling sharing the same dmrs-scattering ingsequence.
As an embodiment, in the step B, the UE determines the association identifier of the second signaling according to the CRC of the second signaling. As a sub-embodiment of this embodiment, the specific implementation method is as follows: firstly, CRC before Scrambling (Scrambling) of the second signaling is determined according to information bits of the second signaling, and then Scrambling operation is carried out on the CRC after Scrambling of the received second signaling by using the CRC before Scrambling to obtain the associated identification of the second signaling.
As an embodiment, the target recipient of the first signaling is the UE (i.e. identified by the RNTI of the UE), and the target recipient of the second signaling is a terminal other than the UE.
As an embodiment, the step C further includes the following steps:
step c1. the UE first demodulates the second radio signal and then removes the effect of the second radio signal from the received signal (i.e. subtracts a component of the second radio signal from the received signal).
As an embodiment, the method is characterized in that the step C further includes the steps of:
step C2. passes the first radio signal to higher layers, discarding the second radio signal.
In particular, according to one aspect of the invention, it is characterized in that the first radio signal and the second radio signal occupy the same frequency domain resource.
As an embodiment, information bits for configuring the frequency domain resources are not included in the first signaling (the saved information bits can be used to indicate the side information).
Specifically, according to an aspect of the present invention, it is characterized in that the first signaling includes a flag bit, and the flag bit is used to indicate that a DCI format of physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }. The first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
The flag bit in the first signaling indicates that the first signaling belongs to the second DCI format. As an embodiment, the first DCI format is one of DCI formats {1, 1A, 1B, 1D, 2, 2A }, and the first wireless signal is transmitted by a CRS antenna port. As an embodiment, the first DCI format is one of DCI formats {2B, 2C, 2D }, and the first wireless Signal is transmitted by a DMRS (Demodulation Reference Signal) antenna port.
Specifically, according to an aspect of the present invention, the first DCI format and the second DCI format have the same payload size, and the second DCI format includes all or part of information bits of the first DCI format except information bits for configuring frequency domain resources.
The above aspect avoids the UE performing additional BD operations due to multi-user superposition. As an embodiment, the second DCI format contains all information bits of the first DCI format except information bits for configuring frequency domain resources and information bits for configuring DMRS parameters. As one embodiment, the second DCI format includes at least one of { transmission power of a second wireless signal, DMRS parameter of second signaling }.
Since the second signaling is not intended for the UE, the UE needs to obtain the assistance information before receiving the second signaling. Further, the additional information required by the UE may be different for PDCCH and EPDCCH. The following two aspects of the invention provide solutions for EPDCCH and PDCCH, respectively.
Specifically, according to an aspect of the present invention, the step a further includes the steps of:
step a1. receiving the first higher layer signaling determines K3 EPDCCH-PRB-sets.
And the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position indicates the EPDCCH occupied by the second signaling.
As an embodiment, the time-frequency position includes a first part and a second part, wherein the first part indicates an Aggregation Level (Aggregation Level) of the second signaling, and the second part indicates a starting eCCE (enhanced control Channel Element) of the second signaling, the starting eCCE being one eCCE of the K3 EPDCCH-PRB-sets.
As an embodiment, the time-frequency location includes a third portion indicating whether the second signaling is transmitted on PDCCH or EPDCCH.
Specifically, according to an aspect of the present invention, it is characterized in that the time-frequency position indicates a PDCCH occupied by the second signaling. Wherein the second signaling is transmitted on the PDCCH.
As an embodiment, the time-frequency position indicates a degree of aggregation of the second signaling and a starting CCE of the second signaling.
The invention discloses a method in a base station supporting multi-user superposition, which comprises the following steps:
-step a. transmitting a first signaling indicating side information of a second signaling, said side information comprising at least one of { time-frequency position, signaling format }
Step B, sending the second signaling according to the associated identification of the second signaling
-step c. transmitting the first wireless signal and the second wireless signal.
The first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, the time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling.
In particular, according to one aspect of the invention, it is characterized in that the first radio signal and the second radio signal occupy the same frequency domain resource.
Information bits for configuring the frequency domain resources are not included in the first signaling.
Specifically, according to an aspect of the present invention, it is characterized in that the first signaling includes a flag bit, and the flag bit is used to indicate that a DCI format of physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }. The first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
Specifically, according to an aspect of the present invention, the first DCI format and the second DCI format have the same payload size, and the second DCI format includes all or part of information bits of the first DCI format except information bits for configuring frequency domain resources.
Specifically, according to an aspect of the present invention, the step a further includes the steps of:
-step a1. sending a first higher layer signaling indication K3 EPDCCH-PRB-sets.
And the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position indicates the EPDCCH occupied by the second signaling.
As an embodiment, the time-frequency position indicates:
index of EPDCCH-PRB-set to which second signaling belongs in the K3 EPDCCH-PRB-sets
Index of EPDCCH occupied by the second signaling in the target EPDCCH set. Wherein the target EPDCCH set comprises all EPDCCH candidates (Candidate) in the EPDCCH-PRB-set to which the second signaling belongs, determined by the association identifier of the second signaling. As a sub-embodiment of this embodiment, the signaling identifier is C-RNTI, and the ecces occupied by the EPDCCH candidates in the target EPDCCH set are mapped by the association identifier of the second signaling according to a Harsh function, specifically referring to section 9.1.4 in TS 36.213.
As an embodiment, the first higher layer signaling is RRC (Radio Resource Control) signaling. As an example, the K3 EPDCCH-PRB-sets are subframe specific (i.e. first higher layer signaling is only valid for the current subframe) or subframe set specific (i.e. first higher layer signaling is only valid for a specific subframe set). As an embodiment, the time-frequency position further indicates whether the EPDCCH occupied by the corresponding physical layer signaling (i.e. the second signaling) is Distributed (Distributed) or localized (locally ized).
As one example, the K3 is greater than 2.
As an embodiment, the K3 EPDCCH-PRB-sets share the same Resource mapping parameter for EPDCCH, which indicates REs that should perform rate matching (to avoid occupation) when EPDCCH RE (Resource Element) mapping. As a sub-embodiment, the EPDCCH resource mapping parameter includes { pdsch-Start-r11, crs-PortsCount-r11, crs-PortsCount-r11, csi-RS-ConfigZPId-r11 }.
Specifically, according to an aspect of the present invention, it is characterized in that the time-frequency position indicates a PDCCH occupied by the second signaling. Wherein the second signaling is transmitted on the PDCCH.
The invention discloses user equipment supporting multi-user superposition, which comprises the following modules:
a first module: for receiving a first signaling indicating assistance information of a second signaling, the assistance information comprising at least one of { time-frequency position, signaling format }
A second module: and the device is used for receiving the second signaling according to the auxiliary information of the second signaling and determining the associated identifier of the second signaling according to the second signaling.
A third module: for receiving a first wireless signal
The first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, the time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling.
The invention discloses a base station device supporting multi-user superposition, which comprises the following modules:
a first module: for sending a first signaling indicating side information of a second signaling, the side information comprising at least one of { time-frequency position, signaling format }
A second module: for sending the second signaling according to the associated identifier of the second signaling
A third module: for transmitting the first wireless signal and the second wireless signal.
The first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, the time-frequency resource occupied by the first wireless signal and the time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling.
Compared with the prior art, the invention has the following technical advantages:
reducing the payload size of scheduling signaling for near UEs while supporting relatively independent scheduling between superimposed radio signals
Reduce the number of times the UE executes BDs, reduce the complexity of the UE, and avoid increased false alarms due to excessive BD times.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a flow chart illustrating scheduling of downlink multi-user superposition according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of assistance information according to an embodiment of the invention;
FIG. 3 illustrates a schematic diagram of time-frequency locations according to an embodiment of the invention;
fig. 4 shows a block diagram of a processing device in a UE according to an embodiment of the invention;
fig. 5 shows a block diagram of a processing means in a base station according to an embodiment of the invention;
Detailed Description
The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a scheduling flowchart of downlink multi-user superposition, as shown in fig. 1. In fig. 1, base station N1 is the maintaining base station for the serving cells of UE U2 and UE U3, where the step in block F1 is an optional step.
For theBase station N1In step S11, a first signaling is sent, where the first signaling indicates auxiliary information of a second signaling, and the auxiliary information includes at least one of { time-frequency position, signaling format }. In step S12, the second signaling is sent according to the association identifier of the second signaling. In step S13 sendA wireless signal and a second wireless signal.
For theUE U2In step S21, the first signaling is received. In step S22, the second signaling is received according to the auxiliary information of the second signaling, and the association identifier of the second signaling is determined according to the second signaling. In step S23, the second wireless signal is received, and the first wireless signal is obtained after the interference caused by the second wireless signal is eliminated.
For theUE U3In step S31, the first signaling is received. The second wireless signal is received in step S32.
In embodiment 1, the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, a time-frequency resource occupied by the first wireless signal and a time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling. The association identifier of the first signaling is configured to the UE U2, and the association identifier of the second signaling is configured to the UE U3.
As sub-embodiment 1 of embodiment 1, the association identity is an RNTI.
As sub-embodiment 2 of embodiment 1, the first wireless signal and the second wireless signal occupy the same frequency domain resource, and the first signaling does not include information bits for frequency domain resource allocation (i.e. the UE U2 determines the frequency domain resource occupied by the first wireless signal according to the information bits for frequency domain resource allocation in the second signaling).
As sub-embodiment 3 of embodiment 1, the first signaling includes a flag bit of 1 bit, where the flag bit is used to indicate that the first signaling is a second DCI format of { first DCI format, second DCI format }. The first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission. The second DCI format includes all or part of the information bits of the first DCI format excluding the information bits for configuring the frequency domain resources.
As sub-embodiment 4 of embodiment 1, the payload sizes of the first DCI format and the second DCI format in sub-embodiment 3 of embodiment 1 are the same.
As sub-embodiment 5 of embodiment 1, the base station N1 sends a first higher layer signaling indication K3 EPDCCH-PRB-sets in step S10. The UE U2 receives the first higher layer signaling in step S20 to determine the K3 EPDCCH-PRB-sets. And the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position indicates the EPDCCH occupied by the second signaling.
As sub-embodiment 6 of embodiment 1, the UE U2 determines the association identifier of the second signaling in step S22 by:
determining the payload size of the second signalling according to said signalling format
Determining RE (Resource Element, Resource particle) occupied by the second signaling according to the time-frequency position
Decoding the second signaling to obtain information bits of the second signaling and CRC after scrambling, calculating CRC before scrambling of the second signaling according to the information bits of the second signaling, and performing xor operation on the CRC before scrambling and the CRC after scrambling of the second signaling to obtain the association identifier of the second signaling.
Example 2
Embodiment 2 illustrates a schematic diagram of auxiliary information, as shown in fig. 2, wherein time-frequency positions identified by arrows R1, R3 and signaling formats identified by R2 are optional. It should be noted that fig. 2 only describes the content of the auxiliary information, wherein the arrangement order of the information is not limited to the actual position in the first signaling.
In embodiment 2, the auxiliary information includes { flag bit, time-frequency position, and signaling format }, and is mapped to { first domain, second domain, and third domain } in the first signaling. The flag bit comprises 1 bit and is used for indicating whether the first signaling is a first DCI format or a second DCI format, wherein the first DCI format is used for scheduling non-multiuser superimposed downlink transmission, and the second DCI format is used for scheduling multiuser superimposed downlink transmission.
As sub-embodiment 1 of embodiment 2, as shown by an arrow R1, the time-frequency position includes three parts, namely a distribution mode, a polymerization degree, and a position of a starting eCCE, where the distribution mode includes 1 bit for indicating whether an EPDCCH occupied by the second signaling is distributed or centralized. As a sub-embodiment of sub-embodiment 1 of embodiment 2, the location of the starting eCCE is an index of the first eCCE occupied by the second signaling in all candidate eCCE sets (corresponding to the aggregation degree of the second signaling) that may be used as the first eCCE.
As a sub-embodiment 2 of embodiment 2, the time-frequency position includes three parts, as shown by an arrow R3, a polymerization degree, and a position of a starting CCE.
As a sub-embodiment 3 of embodiment 2, the signaling format comprises three parts, as indicated by arrow R2:
1 bit for indicating whether or not to include CIF
Optional 1 bit to indicate whether or not SRS is included
3 or 4 bits for indicating the DCI format of the second signaling.
As a sub-embodiment 4 of the embodiment 2, the auxiliary information further includes other information corresponding to the fourth field in the first signaling, and the other information includes at least one of:
whether the second signaling is on PDCCH or EPDCCH
A transmission power related parameter of the second radio signal.
Example 3
Embodiment 3 illustrates a schematic diagram of time-frequency locations, as shown in fig. 3. Wherein, a cell is a CCE or an eCCE, and the cell identified by the slash is a starting CCE or a candidate position of the starting eCCE occupied by the second signaling, where the aggregation level of the second signaling is 4.
In embodiment 3, the time-frequency position in the present invention indicates a polymerization degree of the second signaling and one of the following:
indices of the starting CCE occupied by the second signaling among all possible candidate CCEs (e.g., slashed boxes- #0, #4, #8, #16, …) (without directly indicating the index of the starting CCE occupied by the second signaling)
Indexes of EPDCCH-PRB-sets to which the second signaling belongs in the K3 EPDCCH-PRB-sets in the present invention, and indexes of all possible candidate ecces (such as diagonally marked squares, #0, #4, #8, #16, …) of starting ecces occupied by the second signaling in the EPDCCH-PRB-sets to which the second signaling belongs.
Example 4
Embodiment 4 illustrates a block diagram of a processing device in a UE, as shown in fig. 4. In fig. 4, the UE processing apparatus 200 mainly comprises a receiving module 201, a receiving module 202 and a receiving module 203.
The receiving module 201 is configured to receive a first signaling, where the first signaling indicates auxiliary information of a second signaling, and the auxiliary information includes at least one of { time-frequency position, signaling format }. The receiving module 202 is configured to receive the second signaling according to the auxiliary information of the second signaling, and determine an association identifier of the second signaling according to the second signaling. The receiving module 203 is configured to receive a first wireless signal.
In embodiment 4, the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, a time-frequency resource occupied by the first wireless signal and a time-frequency resource occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling. The associated identity is an RNTI.
As sub-embodiment 1 of embodiment 4, the receiving module 201 is further configured to receive RRC signaling determination K3 EPDCCH-PRB-sets. And the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position comprises the EPDCCH occupied by the second signaling.
As sub-embodiment 2 of embodiment 4, the first signaling includes a flag bit, and the flag bit is used to indicate that a DCI format of the physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }. The first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
Example 5
Embodiment 5 illustrates a block diagram of a processing device in a base station, as shown in fig. 5. In fig. 5, the base station processing apparatus 300 mainly comprises a transmitting module 301, a transmitting module 302 and a transmitting module 303.
The sending module 301 is configured to send a first signaling, where the first signaling indicates auxiliary information of a second signaling, and the auxiliary information includes at least one of { time-frequency position, signaling format }. The sending module 302 is configured to send the second signaling according to the association identifier of the second signaling. The transmitting module 303 is configured to transmit the first wireless signal and the second wireless signal.
In embodiment 5, the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, and the second wireless signal is scheduled by the second signaling. The first wireless signal and the second wireless signal are transmitted on the PDSCH, and occupy the same PRB (Physical Resource Block) Pair (Pair).
As sub-embodiment 1 of embodiment 5, the time-frequency location indicates a PDCCH occupied by the second signaling. Wherein the second signaling is transmitted on the PDCCH.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE in the present invention includes but is not limited to a mobile phone, a tablet computer, a notebook, a network card, and other wireless communication devices. The base station in the present invention includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (12)

1. A method in a UE supporting multi-user superposition, comprising the steps of:
-step a. receiving a first signaling indicating side information of a second signaling, the side information comprising at least one of { time-frequency position, signaling format }
Step B, receiving a second signaling according to the auxiliary information of the second signaling, and determining the association identifier of the second signaling according to the second signaling;
-step c. receiving a first wireless signal;
the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, time-frequency resources occupied by the first wireless signal and time-frequency resources occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling;
the first signaling comprises a flag bit, and the flag bit is used for indicating that the DCI format of the physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }; the first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
2. The method of claim 1, wherein the first wireless signal and the second wireless signal occupy the same frequency domain resource.
3. The method of claim 1, wherein the first DCI format and the second DCI format have the same payload size, and wherein the second DCI format includes all or part of information bits of the first DCI format except information bits for configuring the frequency domain resources.
4. The method according to any one of claims 1-3, wherein said step A further comprises the steps of:
a step a1. receiving a first higher layer signaling to determine K3 EPDCCH-PRB-sets;
and the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position comprises the EPDCCH occupied by the second signaling.
5. The method according to any of claims 1-3, wherein the time-frequency position indicates the PDCCH occupied by the second signaling; wherein the second signaling is transmitted on the PDCCH.
6. A method in a base station supporting multi-user superposition, comprising the steps of:
-step a. transmitting a first signaling indicating side information of a second signaling, said side information comprising at least one of { time-frequency position, signaling format }
Step B, sending the second signaling according to the associated identification of the second signaling
-step c. transmitting the first wireless signal and the second wireless signal;
the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, time-frequency resources occupied by the first wireless signal and time-frequency resources occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling;
the first signaling comprises a flag bit, and the flag bit is used for indicating that the DCI format of the physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }; the first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
7. The method of claim 6, wherein the first wireless signal and the second wireless signal occupy the same frequency domain resource.
8. The method of claim 6, wherein the first DCI format and the second DCI format have the same payload size, and wherein the second DCI format includes all or part of information bits of the first DCI format except information bits for configuring the frequency domain resources.
9. The method according to any one of claims 6 to 8, wherein said step A further comprises the steps of:
a step a1. sending a first higher layer signaling indication K3 EPDCCH-PRB-sets;
and the second signaling is transmitted on the EPDCCH in the K3 EPDCCH-PRB-sets, the K3 is a positive integer, and the time-frequency position indicates the EPDCCH occupied by the second signaling.
10. The method according to any of claims 6-8, wherein the time-frequency position indicates the PDCCH occupied by the second signaling; wherein the second signaling is transmitted on the PDCCH.
11. A user equipment supporting multi-user superposition, comprising the following modules:
a first module: for receiving a first signaling indicating assistance information of a second signaling, the assistance information comprising at least one of { time-frequency position, signaling format }
A second module: the device is used for receiving a second signaling according to the auxiliary information of the second signaling and determining the associated identifier of the second signaling according to the second signaling;
a third module: for receiving a first wireless signal;
the first signaling comprises a flag bit, and the flag bit is used for indicating that the DCI format of the physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }; the first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
12. A base station device supporting multi-user superposition, comprising the following modules:
a first module: for sending a first signaling indicating side information of a second signaling, the side information comprising at least one of { time-frequency position, signaling format }
A second module: for sending the second signaling according to the associated identifier of the second signaling
A third module: for transmitting a first wireless signal and a second wireless signal;
the first signaling and the second signaling are physical layer signaling, the first wireless signal is scheduled by the first signaling, time-frequency resources occupied by the first wireless signal and time-frequency resources occupied by the second wireless signal are completely or partially overlapped, and the second wireless signal is scheduled by the second signaling;
the first signaling comprises a flag bit, and the flag bit is used for indicating that the DCI format of the physical layer signaling to which the flag bit belongs is one of { a first DCI format and a second DCI format }; the first DCI format is used for scheduling non-multi-user superimposed downlink transmission, and the second DCI format is used for scheduling multi-user superimposed downlink transmission.
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