CN109309959B - User equipment, base station, signal transmission method, and computer-readable storage medium - Google Patents
User equipment, base station, signal transmission method, and computer-readable storage medium Download PDFInfo
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- CN109309959B CN109309959B CN201710624860.6A CN201710624860A CN109309959B CN 109309959 B CN109309959 B CN 109309959B CN 201710624860 A CN201710624860 A CN 201710624860A CN 109309959 B CN109309959 B CN 109309959B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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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
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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Abstract
The invention discloses user equipment, a base station, a signal transmission method and a computer readable storage medium, wherein the user equipment receives downlink control information from the base station, and the downlink control information carries signal quality information of a plurality of uplink signal transmission units; the user equipment calculates the data volume to be sent distributed to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the data volume to be sent distributed to the uplink signal transmission unit is; the user equipment transmits data to be transmitted through a plurality of uplink signal transmission units. The invention carries the signal quality information of a plurality of uplink signal transmission units in the downlink control information, and more reasonably and efficiently utilizes all uplink signal transmission units to transmit uplink data.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a user equipment, a base station, a signal transmission method, and a computer-readable storage medium.
Background
In order to improve the transmission rate of the system, a Carrier Aggregation (CA) concept is introduced in an enhanced Long Term Evolution (LTE-a) system, where a User Equipment (UE) supports simultaneous data transmission in multiple subcarrier units (CCs) to obtain a larger bandwidth. In order to specify a resource allocation method used by the network side when the UE performs uplink data transmission, downlink Control Information such as DCI (Downlink Control Information) 0 and DCI4 is specified in a fourteenth specification (rel.14) of the third Generation Partnership project (3 gpp) for transmitting a scheduling requirement of an uplink resource, and the Downlink Control Information is transmitted on a Physical Downlink Control Channel (PDCCH).
Most of the existing research is performed based on a downlink carrier aggregation technology, but when a network and a user equipment support uplink and downlink carrier aggregation at the same time, the specification does not clearly specify how the UE uses different uplink carrier units to perform uplink data transmission, nor does it clearly specify how uplink data sent by the UE performs resource allocation and data transmission in different uplink carrier units.
Because the uplink has the characteristics of low power, low complexity and the like, the physical layer technology adopted by the LTE uplink is different from the physical layer technology adopted by the downlink, the downlink adopts an Orthogonal Frequency Division Multiplexing (OFDM) technology, and the uplink adopts a Single Carrier Frequency Division Multiple Access (SC-FDMA) technology, so that the uplink and downlink resource allocation and scheduling modes of the LTE are determined to be greatly different, and the maximum difference of the uplink and downlink resource allocation lies in that user equipment has transmission power constraint compared with a base station. On the uplink transmission link, allocating multiple CCs to a UE does not necessarily achieve the effect achieved by the downlink transmission link under the same condition, i.e. the downlink CA technology cannot be fully technically reused for the uplink.
For scheduling of uplink CCs, when a UE establishes a service, a base station (Evolved Node B, eNB) configures an uplink CC for the UE, and then the eNB connects a reconfiguration message through Radio Resource Control (RRC) to sequentially add other CCs to an uplink CC set of the UE. By adopting the method, the eNB cannot correctly judge which uplink CCs should be added to the UE, and the CCs with poor channel quality are possibly added to the UE, so that uplink transmission data is lost or repeated retransmission is required, and the communication efficiency is low. Therefore, with the uplink carrier scheduling method of the existing carrier aggregation system, the eNB cannot make a reasonable decision on uplink carrier scheduling, and in addition, when the uplink throughput is particularly large, the resource allocation and utilization manner is not efficient enough.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a user equipment, a base station, a signal transmission method, and a computer readable storage medium, which enable a UE to more reasonably and efficiently transmit uplink data by using different uplink signal transmission units.
In order to achieve the purpose of the invention, the technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a signal transmission method, which comprises the following steps:
the method comprises the steps that user equipment receives downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
the user equipment calculates the data volume to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the data volume to be sent allocated to the uplink signal transmission unit is more;
the user equipment transmits data to be transmitted through a plurality of uplink signal transmission units.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the method for calculating, by the user equipment, the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit includes:
the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates the data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight.
Further, the method also comprises the following steps:
the user equipment sends the data volume to be sent to the base station and requests uplink resources;
the user equipment receives configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit;
and the user equipment sends the sounding reference signal on each uplink signal transmission unit.
Further, the uplink signal transmission unit is an uplink subcarrier unit or an uplink beam.
An embodiment of the present invention further provides a signal transmission method, including:
a base station acquires signal quality information of a plurality of uplink signal transmission units;
the base station sends the signal quality information of the plurality of uplink signal transmission units to the user equipment through the downlink control information;
the base station receives data from the user equipment through a plurality of uplink signal transmission units.
Further, the method also comprises the following steps:
the base station receives a data volume to be sent and a request uplink resource message from the user equipment;
the base station configures a plurality of uplink signal transmission units for the user equipment, and sends configuration information of the plurality of uplink signal transmission units and configuration information of the sounding reference signal on each uplink signal transmission unit to the user equipment;
and the base station receives the sounding reference signal from the user equipment on each uplink signal transmission unit.
Further, the acquiring, by the base station, signal quality information of the plurality of uplink signal transmission units specifically includes:
and calculating the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal received by each uplink signal transmission unit, calculating the signal quality weight of each uplink signal transmission unit according to the signal-to-noise-and-interference ratio, and taking the signal quality weight as the acquired signal quality information.
The embodiment of the present invention further provides a user equipment, which includes a first receiving module, a calculating module and a first sending module, wherein:
the first receiving module is used for receiving downlink control information from a base station and outputting signal quality information of a plurality of uplink signal transmission units carried in the downlink control information to the calculating module;
a calculating module, configured to calculate, according to the signal quality information of each uplink signal transmission unit, a to-be-sent data amount allocated to each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the to-be-sent data amount allocated to the uplink signal transmission unit is, output a calculation result to a first sending module;
and the first sending module is used for transmitting the data to be sent through the plurality of uplink signal transmission units according to the calculation result of the calculation module.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the calculating module calculates the amount of data to be transmitted allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and the calculating module includes:
and obtaining a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtaining a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculating the data volume to be sent allocated to each uplink signal transmission unit according to the transmission weight.
Further, the first sending module is further configured to send the data amount to be sent to the base station and request uplink resources; sending the sounding reference signal on each uplink signal transmission unit;
the first receiving module is further configured to receive configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit.
The embodiment of the present invention further provides a base station, including an obtaining module, a second sending module, and a second receiving module, where:
the acquisition module is used for acquiring the signal quality information of the plurality of uplink signal transmission units and outputting the signal quality information to the second sending module;
the second sending module is used for sending the signal quality information of the plurality of uplink signal transmission units to the user equipment through the downlink control information and informing the second receiving module;
and the second receiving module is used for receiving the notification of the second sending module and receiving the data from the user equipment through the plurality of uplink signal transmission units.
Further, the second receiving module is further configured to receive a data amount to be sent and an uplink resource request message from the user equipment; receiving the sounding reference signal from the user equipment on each uplink signal transmission unit;
the second sending module is further configured to configure a plurality of uplink signal transmission units for the user equipment, and send configuration information of the plurality of uplink signal transmission units and configuration information of the sounding reference signal on each uplink signal transmission unit to the user equipment.
Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of:
receiving downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
calculating the data quantity to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, wherein if the signal quality of a certain uplink signal transmission unit is better, the more the data quantity to be sent allocated to the uplink signal transmission unit is;
and transmitting the data to be transmitted through a plurality of uplink signal transmission units.
Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of:
acquiring signal quality information of a plurality of uplink signal transmission units;
sending the signal quality information of the plurality of uplink signal transmission units to user equipment through downlink control information;
data from the user equipment is received through a number of uplink signal transmission units.
The technical scheme of the invention has the following beneficial effects:
according to the user equipment, the base station, the signal transmission method and the computer readable storage medium, the downlink control information carries the signal quality information of the uplink signal transmission units, the data volume to be sent distributed to each uplink signal transmission unit is calculated on the user equipment side, and all the uplink signal transmission units are reasonably and efficiently utilized for uplink data transmission; under the condition of large data volume, the channel quality is better and more borne, so that the scheduling among all uplink signal transmission units is more fair and reasonable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a schematic flow chart of a signal transmission method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a beam structure in the related art;
fig. 3 is a flowchart illustrating a signal transmission method according to a second embodiment of the invention;
fig. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a signal transmission method according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As shown in fig. 1, a signal transmission method according to the present invention includes the steps of:
step 101: the method comprises the steps that user equipment receives downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit.
Further, the method also comprises the following steps:
the user equipment sends the data volume to be sent to the base station and requests uplink resources;
the user equipment receives configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit;
and the user equipment sends the Sounding Reference Signal (SRS) on each uplink Signal transmission unit.
It should be noted that, the base station receives the sounding reference signal on each uplink signal transmission unit, and calculates the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal, so as to obtain the signal quality information of each uplink signal transmission unit.
Further, the signal quality information is a signal quality weight, and if the signal quality weight of a certain uplink signal transmission unit is larger, the signal quality of the uplink signal transmission unit is better.
It should be noted that, in the existing 3gpp 36.212 specification, the DCI message related to uplink resource allocation is defined as follows:
DCI Format (Format) 0: the content elements of the resource scheduling information of the Uplink shared Channel (PUSCH) Channel are shown in table 1.
TABLE 1
DCI Format 4: the PUSCH used to schedule multiple antenna ports contains the content elements as shown in table 2.
TABLE 2
According to the definitions of several DCI formats related to uplink resource allocation in the existing specification, there is no parameter in the DCI parameters of the existing specification to instruct the UE how to select a CC for uplink data in a BUFFER (BUFFER) of the UE in the uplink CA system, and how to perform resource allocation and transmission in several uplink cells.
As shown in table 3, a signal quality weight factor for identifying signal quality information is added to a DCI message issued by a base station to a user equipment in the present invention, where the signal quality weight may be 7 bits (bits) or other bits.
TABLE 3
Further, the uplink signal transmission unit is an uplink subcarrier unit or an uplink beam.
It should be noted that, a schematic structural diagram of the beams is shown in fig. 2, the ue in 5G supports a Massive Multiple-Input Multiple-Output (Massive MIMO) technology and a BeamForming (BeamForming) technology, and each Beam (Beam) can be regarded as a set of special uplink CCs. Therefore, the uplink signal transmission unit in the present invention may be an uplink subcarrier unit in the existing 4G, or may be a beam in the 5G.
The existing 4G base station only has ten or more antennas, but the 5G base station can support hundreds of antennas, and these antennas can form a large-scale antenna array by using Massive MIMO technology, which means that the base station can simultaneously transmit and receive signals from more users, thereby increasing the capacity of the mobile network by tens of times or more. Massive MIMO is a key technology for realizing commercial 5G, but multiple antennas inevitably bring more interference, and beam forming is the key to solve the problem. Beam forming is a technology for transmitting wireless signals (electromagnetic waves) in a specific direction, and if electromagnetic waves emitted by each antenna can be effectively controlled and the space of each electromagnetic wave is mutually cancelled or enhanced, a narrow beam can be formed instead of omnidirectional emission, limited energy is concentrated on the specific direction for transmission, the transmission distance is longer, and signal interference is avoided.
Step 102: the user equipment calculates the data volume to be sent distributed to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the data volume to be sent distributed to the uplink signal transmission unit is;
further, the calculating, by the user equipment, the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit specifically includes:
the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates the data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight.
In an embodiment of the present invention, the transmission weight of a certain uplink signal transmission unit = preset first weighting coefficient + preset second weighting coefficient + preset resource block weight of the uplink signal transmission unit;
the data volume to be sent of a certain uplink signal transmission unit = the transmission weight of the uplink signal transmission unit ×. The data volume to be sent of the user equipment.
The preset first weighting coefficient and the preset second weighting coefficient can be preset according to actual needs.
It should be noted that, when calculating the amount of data to be sent allocated to each uplink signal transmission unit, there are two weight factors: the signal quality weight and the resource block weight of the uplink signal transmission unit. The invention emphasizes that if the signal quality of a certain uplink signal transmission unit is better and the number of allocated resource blocks is more, the larger the signal quality weight and the resource block weight of the uplink signal transmission unit are, the more the data quantity to be sent allocated to the uplink signal transmission unit is. One skilled in the art can derive many different calculation methods based on this principle, including weighted average calculation methods or other calculation methods.
Step 103: the user equipment transmits data to be transmitted through a plurality of uplink signal transmission units.
As shown in fig. 3, the present invention also discloses a signal transmission method, which comprises the following steps:
step 301: a base station acquires signal quality information of a plurality of uplink signal transmission units;
further, the method also comprises the following steps:
the base station receives a data volume to be sent and a request uplink resource message from the user equipment;
the base station configures a plurality of uplink signal transmission units for the user equipment, and sends configuration information of the plurality of uplink signal transmission units and configuration information of the sounding reference signal on each uplink signal transmission unit to the user equipment;
and the base station receives the sounding reference signal from the user equipment on each uplink signal transmission unit.
Further, the acquiring, by the base station, signal quality information of the plurality of uplink signal transmission units specifically includes:
and calculating the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal received by each uplink signal transmission unit, calculating the signal quality weight of each uplink signal transmission unit according to the signal-to-noise-and-interference ratio, and taking the signal quality weight as the acquired signal quality information.
Step 302: the base station sends the signal quality information of the plurality of uplink signal transmission units to the user equipment through the downlink control information;
further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit.
It should be noted that, after receiving the downlink control message, the ue calculates the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit and the allocated resource block information. The specific calculation method is as described above, and is not described herein again.
Step 303: the base station receives data from the user equipment through a plurality of uplink signal transmission units.
As shown in fig. 4, the present invention also discloses a user equipment, which includes a first receiving module, a calculating module and a first sending module, wherein:
the first receiving module is used for receiving downlink control information from a base station and outputting signal quality information of a plurality of uplink signal transmission units carried in the downlink control information to the calculating module;
a calculating module, configured to calculate, according to the signal quality information of each uplink signal transmission unit, a to-be-sent data amount allocated to each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the to-be-sent data amount allocated to the uplink signal transmission unit is, output a calculation result to a first sending module;
and the first sending module is used for transmitting the data to be sent through the plurality of uplink signal transmission units according to the calculation result of the calculation module.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the calculating module calculates the amount of data to be transmitted allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and the calculating module includes:
and obtaining a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtaining a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculating the data volume to be sent allocated to each uplink signal transmission unit according to the transmission weight.
In an embodiment of the present invention, the transmission weight of a certain uplink signal transmission unit = preset first weighting coefficient + preset second weighting coefficient + preset resource block weight of the uplink signal transmission unit;
the data amount to be sent of a certain uplink signal transmission unit = the transmission weight of the uplink signal transmission unit — the data amount to be sent of the user equipment.
The preset first weighting coefficient and the preset second weighting coefficient can be preset according to actual needs.
It should be noted that, when calculating the amount of data to be transmitted allocated to each uplink signal transmission unit, there are two weight factors: the signal quality weight and the resource block weight of the uplink signal transmission unit. The invention emphasizes that if the signal quality of a certain uplink signal transmission unit is better and the allocated resource blocks are more, the larger the signal quality weight and the resource block weight of the uplink signal transmission unit are, the more the data quantity to be transmitted allocated to the uplink signal transmission unit is. One skilled in the art can derive many different calculation methods based on this principle, including weighted average calculation methods or other calculation methods.
Further, the first sending module is further configured to send the data amount to be sent to the base station and request uplink resources; sending the sounding reference signal on each uplink signal transmission unit;
the first receiving module is further configured to receive configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit.
It should be noted that, the base station receives the sounding reference signal on each uplink signal transmission unit, and calculates the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal, so as to obtain the signal quality information of each uplink signal transmission unit.
Further, the signal quality information is a signal quality weight, and if the signal quality weight of a certain uplink signal transmission unit is larger, the signal quality of the uplink signal transmission unit is better.
Further, the uplink signal transmission unit is an uplink subcarrier unit or an uplink beam.
It should be noted that the ue in 5G supports a Massive Multiple-Input Multiple-Output (Massive MIMO) technology and a Beam forming (BeamForming) technology, and each Beam (Beam) can be regarded as a special set of uplink CCs. Therefore, the uplink signal transmission unit in the present invention may be an uplink subcarrier unit in the existing 4G, and may also be a beam in 5G.
As shown in fig. 5, the present invention also discloses a base station, which includes an obtaining module, a second sending module, and a second receiving module, wherein:
the acquisition module is used for acquiring the signal quality information of a plurality of uplink signal transmission units and outputting the signal quality information to the second sending module;
the second sending module is used for sending the signal quality information of the plurality of uplink signal transmission units to the user equipment through the downlink control information and informing the second receiving module;
and the second receiving module is used for receiving the notification of the second sending module and receiving the data from the user equipment through the plurality of uplink signal transmission units.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit.
It should be noted that, after receiving the downlink control message, the ue calculates the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit and the allocated resource block information. The specific calculation method is as described above, and is not described herein again.
Further, the second receiving module is further configured to receive a data amount to be sent and an uplink resource request message from the user equipment; receiving the sounding reference signal from the user equipment on each uplink signal transmission unit;
the second sending module is further configured to configure a plurality of uplink signal transmission units for the ue, and send configuration information of the plurality of uplink signal transmission units and configuration information of the srs on each uplink signal transmission unit to the ue.
Further, the acquiring, by the acquiring module, signal quality information of a plurality of uplink signal transmission units specifically includes:
and calculating a signal-to-noise interference ratio of each uplink signal transmission unit according to the sounding reference signal received by each uplink signal transmission unit, calculating a signal quality weight of each uplink signal transmission unit according to the signal-to-noise interference ratio, and taking the signal quality weight as the acquired signal quality information.
An embodiment of the present invention further discloses a computer-readable storage medium, which stores one or more programs, where the one or more programs are executable by one or more processors to implement the following steps:
receiving downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
calculating the data quantity to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, wherein if the signal quality of a certain uplink signal transmission unit is better, the more the data quantity to be sent allocated to the uplink signal transmission unit is;
and transmitting data to be transmitted through a plurality of uplink signal transmission units.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the step of calculating the amount of data to be transmitted allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit specifically includes:
and obtaining a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtaining a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculating the data volume to be sent allocated to each uplink signal transmission unit according to the transmission weight.
In an embodiment of the present invention, the transmission weight of a certain uplink signal transmission unit = preset first weighting coefficient + preset second weighting coefficient + preset resource block weight of the uplink signal transmission unit;
the data volume to be sent of a certain uplink signal transmission unit = the transmission weight of the uplink signal transmission unit ×. The data volume to be sent of the user equipment.
The preset first weighting coefficient and the preset second weighting coefficient can be preset according to actual needs.
It should be noted that, when calculating the amount of data to be transmitted allocated to each uplink signal transmission unit, there are two weight factors: the signal quality weight and the resource block weight of the uplink signal transmission unit. The invention emphasizes that if the signal quality of a certain uplink signal transmission unit is better and the allocated resource blocks are more, the larger the signal quality weight and the resource block weight of the uplink signal transmission unit are, the more the data quantity to be transmitted allocated to the uplink signal transmission unit is. One skilled in the art can derive many different calculation methods based on this principle, including weighted average calculation methods or other calculation methods.
Further, before the step of receiving downlink control information from the base station, the one or more programs may be further executable by the one or more processors to implement the steps of:
sending the data volume to be sent to the base station and requesting uplink resources;
receiving configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit;
and sending the sounding reference signal on each uplink signal transmission unit.
It should be noted that, the base station receives the sounding reference signal on each uplink signal transmission unit, and calculates the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal, so as to obtain the signal quality information of each uplink signal transmission unit.
Further, the signal quality information is a signal quality weight, and if the signal quality weight of a certain uplink signal transmission unit is larger, the signal quality of the uplink signal transmission unit is better.
Further, the uplink signal transmission unit is an uplink subcarrier unit or an uplink beam.
An embodiment of the present invention also discloses a computer-readable storage medium, which stores one or more programs, where the one or more programs are executable by one or more processors to implement the following steps:
acquiring signal quality information of a plurality of uplink signal transmission units;
sending the signal quality information of the plurality of uplink signal transmission units to user equipment through downlink control information;
and receiving data from the user equipment through a plurality of uplink signal transmission units.
Further, the downlink control information also carries resource block information allocated to each uplink signal transmission unit.
Further, before the step of obtaining signal quality information of a number of uplink signal transmission units, the one or more programs may be further executable by the one or more processors to implement the steps of:
receiving a data volume to be sent and a request uplink resource message from the user equipment;
configuring a plurality of uplink signal transmission units for the user equipment, and sending configuration information of the plurality of uplink signal transmission units and configuration information of sounding reference signals on each uplink signal transmission unit to the user equipment;
receiving the sounding reference signal from the user equipment on each uplink signal transmission unit.
Further, the step of obtaining the signal quality information of the plurality of uplink signal transmission units specifically includes:
and calculating a signal-to-noise interference ratio of each uplink signal transmission unit according to the sounding reference signal received by each uplink signal transmission unit, calculating a signal quality weight of each uplink signal transmission unit according to the signal-to-noise interference ratio, and taking the signal quality weight as the acquired signal quality information.
The present invention is further explained by providing a preferred embodiment, but it should be noted that the preferred embodiment is only for better describing the present invention and should not be construed as unduly limiting the present invention.
As shown in fig. 6, the signal transmission method according to the preferred embodiment of the present invention includes the following steps:
step 601: the user equipment requests uplink resources to the eNB, and the eNB configures all uplink CCs and configures SRS to the user equipment;
step 602: user equipment sends a buffer status report to eNB, wherein the buffer status report comprises the data volume requested by UE;
step 603: the user equipment sends SRS to eNB through all uplink CCs configured by the eNB;
step 604: the eNB measures SINR of the user equipment on each uplink CC according to the SRS sent by the user equipment, and calculates uplink channel quality weight (Signal _ Factor) information;
for CC1: UL SINR =2dB measured by eNB
For CC2: UL SINR =8dB measured by eNB
CC1：Signal_Factor＝2/10
CC2：Signal_Factor＝8/10
Step 605: the eNB informs the user equipment of the quality weight of each uplink CC channel and the distributed resource block information in a DCI form;
as shown in table 4, an example of the signal quality weight calculation method may be a 7-bit lookup table.
TABLE 4
For step 604, the corresponding bit value in the CC1 Signal _ Factor DCI is: 20; the corresponding bit value in the CC2 Signal _ Factor DCI is as follows: 80. table 3 may be referred to as a DCI parameter content example that the eNB issues to the user equipment.
Step 606: the user equipment calculates the data volume required to be sent on each carrier according to the data volume of the current buffer area, the quality weight of each CC uplink channel and the received uplink resource block weight;
assuming that the UE buffer status report in step 602 has 1000 data packets, the number of uplink resource blocks allocated to the UE by the network in CC1 DCI0 decoded by the UE is 5; the network allocates the number of uplink resource blocks to the UE in the CC2 DCI0 decoded by the UE to be 10; then the UE may calculate the uplink resource block weight RB _ Factor =5/15 at CC1 and the uplink resource block weight RB _ Factor =10/15 at CC 2. In step 605, the corresponding bit value in the DCI of CC1 Signal _ Factor is: 20 percent; the corresponding bit value in the CC2 Signal _ Factor DCI is as follows: 80 percent.
The amount of data that the UE needs to send on CC1 may be: transfer DATA _ CC1= Buffer DATA = (RB _ Factor _ CC1 × (Signal _ Factor _ CC 1)/(RB _ Factor _ CC2 × (Signal _ Factor _ CC 2) =1000 × (5/15 × 20%)/(10/15 × 80%) =125;
the amount of data that the UE needs to send on CC2 is: transfer DATA _ CC2= Buffer DATA [ [1- (RB _ Factor _ CC1 [ ] Signal _ Factor _ CC 1)/(RB _ Factor _ CC2 [ ] Signal _ Factor _ CC 2) ] =1000 [ [1- (5/15 × 20%)/(10/15 × 80%) ] =875.
Note that, although the calculation method is not a weighted average calculation method, the following is satisfied: and if the signal quality weight and the resource block weight of a certain uplink signal transmission unit are larger, allocating more data to be sent to the uplink signal transmission unit.
Step 607: and the user equipment sends the calculated corresponding amount of data to the network through the corresponding subcarrier.
So far, in a network with multiple downlink subcarriers and multiple uplink subcarriers CA, the user equipment may perform an uplink data service.
According to the user equipment, the base station, the signal transmission method and the computer readable storage medium, the downlink control information carries the signal quality information of the uplink signal transmission units, the data volume to be transmitted distributed to each uplink signal transmission unit is calculated on the user equipment side, all the uplink signal transmission units are reasonably and efficiently utilized to transmit uplink data, and under the condition of large data volume, the channel quality is better assumed, so that the scheduling among the uplink signal transmission units is fairer and more reasonable.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized in a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a memory device and executed by a computing device, and in some cases, the steps shown or described may be executed out of order, or separately as individual integrated circuit modules, or multiple modules or steps thereof may be implemented as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A method of signal transmission, comprising:
the method comprises the steps that user equipment receives downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
the user equipment calculates the data volume to be sent distributed to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the data volume to be sent distributed to the uplink signal transmission unit is;
user equipment transmits data to be transmitted through a plurality of uplink signal transmission units;
the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the method for calculating, by the user equipment, the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit includes:
the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates the data volume to be sent allocated to each uplink signal transmission unit according to the transmission weight.
2. The signal transmission method of claim 1, further comprising, prior to the method:
the user equipment sends the data volume to be sent to the base station and requests uplink resources;
the user equipment receives configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit;
and the user equipment sends the sounding reference signal on each uplink signal transmission unit.
3. The signal transmission method according to claim 1, wherein the uplink signal transmission unit is an uplink subcarrier unit or an uplink beam.
4. A method of signal transmission, comprising:
a base station acquires signal quality information of a plurality of uplink signal transmission units;
the base station sends the signal quality information of the plurality of uplink signal transmission units to user equipment through downlink control information, so that the user equipment calculates the data volume to be sent distributed to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit; the downlink control information also carries resource block information allocated to each uplink signal transmission unit, and specifically, the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates a data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight;
the base station receives data from the user equipment through a plurality of uplink signal transmission units.
5. The signal transmission method of claim 4, further comprising, prior to the method:
the base station receives a data volume to be sent and a request uplink resource message from the user equipment;
the base station configures a plurality of uplink signal transmission units for the user equipment, and sends configuration information of the plurality of uplink signal transmission units and configuration information of the sounding reference signal on each uplink signal transmission unit to the user equipment;
the base station receives the sounding reference signal from the user equipment on each uplink signal transmission unit.
6. The signal transmission method according to claim 5, wherein the obtaining, by the base station, signal quality information of a plurality of uplink signal transmission units specifically includes:
and calculating the signal-to-noise-and-interference ratio of each uplink signal transmission unit according to the sounding reference signal received by each uplink signal transmission unit, calculating the signal quality weight of each uplink signal transmission unit according to the signal-to-noise-and-interference ratio, and taking the signal quality weight as the acquired signal quality information.
7. A user device, comprising a first receiving module, a calculating module, and a first sending module, wherein:
the first receiving module is used for receiving downlink control information from a base station and outputting signal quality information of a plurality of uplink signal transmission units carried in the downlink control information to the calculating module;
a calculating module, configured to calculate, according to the signal quality information of each uplink signal transmission unit, a to-be-sent data amount allocated to each uplink signal transmission unit, and if the signal quality of a certain uplink signal transmission unit is better, the more the to-be-sent data amount allocated to the uplink signal transmission unit is, output a calculation result to a first sending module;
the first sending module is used for transmitting data to be sent through a plurality of uplink signal transmission units according to the calculation result of the calculation module;
the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the calculating module calculates the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, and the calculating module includes:
and obtaining a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtaining a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculating the data volume to be sent allocated to each uplink signal transmission unit according to the transmission weight.
8. The UE of claim 7, wherein the first sending module is further configured to send a data amount to be sent to the base station and request uplink resources; sending sounding reference signals on each uplink signal transmission unit;
the first receiving module is further configured to receive configuration information of the plurality of uplink signal transmission units from the base station and configuration information of the sounding reference signal on each uplink signal transmission unit.
9. A base station, comprising an obtaining module, a second sending module and a second receiving module, wherein:
the acquisition module is used for acquiring the signal quality information of the plurality of uplink signal transmission units and outputting the signal quality information to the second sending module;
a second sending module, configured to send the signal quality information of the multiple uplink signal transmission units to the user equipment through the downlink control information, so that the user equipment calculates, according to the signal quality information of each uplink signal transmission unit, a to-be-sent data amount allocated to each uplink signal transmission unit, and notifies a second receiving module; the downlink control information also carries resource block information allocated to each uplink signal transmission unit, and specifically, the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates a data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight;
and the second receiving module is used for receiving the notification of the second sending module and receiving the data from the user equipment through the plurality of uplink signal transmission units.
10. The base station of claim 9,
the second receiving module is further configured to receive a data amount to be sent and an uplink resource request message from the user equipment; receiving sounding reference signals from the user equipment on each uplink signal transmission unit;
the second sending module is further configured to configure a plurality of uplink signal transmission units for the ue, and send configuration information of the plurality of uplink signal transmission units and configuration information of the srs on each uplink signal transmission unit to the ue.
11. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors for performing the steps of:
receiving downlink control information from a base station, wherein the downlink control information carries signal quality information of a plurality of uplink signal transmission units;
calculating the data quantity to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit, wherein if the signal quality of a certain uplink signal transmission unit is better, the more the data quantity to be sent allocated to the uplink signal transmission unit is;
transmitting data to be transmitted through a plurality of uplink signal transmission units;
the downlink control information also carries resource block information allocated to each uplink signal transmission unit;
the method for calculating, by the user equipment, the amount of data to be sent allocated to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit includes:
the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates the data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight.
12. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors for performing the steps of:
acquiring signal quality information of a plurality of uplink signal transmission units;
sending the signal quality information of the plurality of uplink signal transmission units to user equipment through downlink control information, so that the user equipment calculates the data volume to be sent distributed to each uplink signal transmission unit according to the signal quality information of each uplink signal transmission unit; the downlink control information also carries resource block information allocated to each uplink signal transmission unit, and specifically, the user equipment obtains a signal quality weight and a resource block weight of each uplink signal transmission unit according to the signal quality information and the allocated resource block information of each uplink signal transmission unit, obtains a transmission weight of each uplink signal transmission unit according to the signal quality weight and the resource block weight, and calculates a data volume to be transmitted allocated to each uplink signal transmission unit according to the transmission weight;
data from the user equipment is received through a number of uplink signal transmission units.
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| WO2017032619A1 (en) * | 2015-08-21 | 2017-03-02 | Panasonic Intellectual Property Corporation Of America | Uplink transmission indication |
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| CN102056300B (en) * | 2009-11-03 | 2015-01-28 | 中兴通讯股份有限公司 | Component carrier configuration method, user equipment and base station |
| US9628227B2 (en) * | 2010-01-08 | 2017-04-18 | Sharp Kabushiki Kaisha | Mobile communication method and system for sounding reference signal transmission, and base station, user equipment and integrated circuit therein |
| WO2011084033A2 (en) * | 2010-01-11 | 2011-07-14 | Samsung Electronics Co., Ltd. | Wireless communication system and random access method thereof |
| US8611442B2 (en) * | 2010-04-06 | 2013-12-17 | Motorola Mobility Llc | Method and apparatus for channel sounding in an orthogonal frequency division multiplexing communication system |
| CN105101415B (en) * | 2014-05-04 | 2019-02-12 | 普天信息技术有限公司 | A kind of Independent Carrier Wave dispatching method under carrier aggregation scene |
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| WO2012024181A1 (en) * | 2010-08-16 | 2012-02-23 | Qualcomm, Inc. | Channel state information feedback for carrier aggregation |
| WO2017032619A1 (en) * | 2015-08-21 | 2017-03-02 | Panasonic Intellectual Property Corporation Of America | Uplink transmission indication |
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