CN111698064B - Method, device, equipment and medium for sending enhanced demodulation reference signal - Google Patents

Method, device, equipment and medium for sending enhanced demodulation reference signal Download PDF

Info

Publication number
CN111698064B
CN111698064B CN201910194974.0A CN201910194974A CN111698064B CN 111698064 B CN111698064 B CN 111698064B CN 201910194974 A CN201910194974 A CN 201910194974A CN 111698064 B CN111698064 B CN 111698064B
Authority
CN
China
Prior art keywords
frequency offset
additional dmrs
determining
transmission
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910194974.0A
Other languages
Chinese (zh)
Other versions
CN111698064A (en
Inventor
陆松鹤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN201910194974.0A priority Critical patent/CN111698064B/en
Publication of CN111698064A publication Critical patent/CN111698064A/en
Application granted granted Critical
Publication of CN111698064B publication Critical patent/CN111698064B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset

Landscapes

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

Abstract

The embodiment of the application discloses a method, a device, equipment and a storage medium for sending an enhanced demodulation reference signal, wherein the method comprises the following steps: determining the frequency offset of UE to be configured; and determining the transmission quantity of the additional DMRS for the UE according to the frequency offset of the UE.

Description

Method, device, equipment and medium for sending enhanced demodulation reference signal
Technical Field
Embodiments of the present application relate to, but are not limited to, fifth generation (5G, 5 th Generation) communication technology, and in particular, to a method, a device, equipment and a storage medium for transmitting an enhanced demodulation reference signal.
Background
The 5G protocol specifies that, in a high-speed scenario, a downlink demodulation reference signal (additional DMRS, additional Demodulation Reference Signal) is used to assist in downlink demodulation, so as to ensure services. Meanwhile, the configuration of the additional DMRS with different time domain numbers is provided, so that the resource cost of the additional DMRS can be adjusted while coping with different motion speeds, and the transmission quantity of effective data is ensured. The configuration options for various scenarios are empirically configured by a person.
The configuration modes of the additional DMRS include 1, 2, 3 and 3 different configuration modes, the base station can send different numbers of additional DMRS, the more the additional DMRS are, the better the downlink demodulation performance is, the lower the block error rate is, but the corresponding effective data transmission amount is reduced. How to balance the pilot overhead caused by the number of the transmitted additional DMRS with the effective transmission data size of the system is a problem to be considered.
Disclosure of Invention
In view of this, embodiments of the present application provide a method, apparatus, device, and storage medium for transmitting an enhanced demodulation reference signal to solve at least one problem in the related art.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides a method for transmitting an additional DMRS, which comprises the following steps:
determining the frequency offset of UE to be configured;
and determining the transmission quantity of the additional DMRS for the UE according to the frequency offset of the UE.
The embodiment of the application provides a sending device of an additional DMRS, where the sending device includes:
a first determining unit, configured to determine a frequency offset of a UE to be configured;
and the second determining unit is used for determining the transmission quantity of the additional DMRS for the UE according to the frequency offset of the UE.
The embodiment of the application provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor realizes the steps in the method for transmitting the enhanced demodulation reference signal when executing the program.
Embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements steps in a method of transmitting an enhanced demodulation reference signal.
In the embodiment of the application, determining the frequency offset of the UE to be configured; determining the transmission number of the additional DMRS for the UE according to the frequency offset of the UE; therefore, the pilot frequency overhead and the effective transmission data volume of the system can be caused according to the number of the additional DMRS transmitted in the frequency offset self-adaptive and unbalanced mode.
Drawings
Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;
fig. 2A is a schematic implementation flow diagram of a method for transmitting a downlink additional DMRS according to an embodiment of the present application;
fig. 2B is a schematic diagram of a transmission position of an additional DMRS in an embodiment of the present application;
fig. 3 is a schematic implementation flow chart of a cell-level adaptive configuration and period updating method of an additional DMRS in the embodiment of the present application;
fig. 4 is a schematic implementation flow diagram of a user-level adaptive configuration and period updating method of an additional DMRS based on terminal reporting information;
fig. 5 is a schematic implementation flow diagram of a user-level adaptive configuration and period updating method based on an additional DMRS of a base station transmitting DCI information;
FIG. 6 is a schematic diagram of an implementation flow of introducing a threshold decision factor and analyzing and calculating a threshold in an embodiment of the present application;
fig. 7A is a schematic structural diagram of a transmitting device for enhancing a demodulation reference signal according to an embodiment of the present application;
Fig. 7B is a schematic diagram of a hardware entity of the computer device in the embodiment of the present application.
Detailed Description
For a better understanding of the embodiments of the present application, we first describe Doppler shift, which is a physical phenomenon in which the wavelength of the object radiation changes due to the relative motion of the source and the observer. In front of the moving wave source, the wave is compressed, the wavelength becomes shorter, and the frequency becomes higher (i.e., blue shift). Doppler shift, when moved behind the wave source, produces the opposite effect. I.e. the wavelength becomes longer and the frequency becomes lower (i.e. red shift).
In a communication scene, the maximum Doppler frequency offset is introduced by the relative motion between the base station and the UE, wherein the base station can be understood as a wave source, the UE can be understood as an observer, and the Doppler frequency offset is expressed by adopting a formula (1):
Figure BDA0001995485710000031
where Δf (Δf) represents the doppler shift, v represents the speed at which the UE moves, c represents the speed of light, and f represents the carrier frequency.
The technical solutions of the present application are further described in detail below with reference to the drawings and examples.
In this embodiment, a network architecture is provided first, fig. 1 is a schematic diagram of a composition structure of the network architecture in this embodiment, and as shown in fig. 1, the network architecture includes two or more terminals 11 to 1N and a base station 31, where the terminals 11 to 1N and the base station 31 interact through a network 21. In general, a terminal may be any type of electronic device with information processing capabilities in an implementation process, and may include, for example, a mobile phone, a digital phone, a video phone, a television, a sensing device, etc.
The present embodiment proposes a method for transmitting an enhanced demodulation reference signal, which is applied to a computer device (terminal or base station), and the functions implemented by the method may be implemented by invoking program codes by a processor in the computer device, and of course, the program codes may be stored in a computer storage medium, and it is apparent that the computer device includes at least the processor and the storage medium.
Fig. 2A is a schematic implementation flow chart of a method for transmitting an enhanced demodulation reference signal according to an embodiment of the present application, as shown in fig. 2A, where the method includes:
step S201, determining the frequency offset of UE to be configured;
step S202, determining the transmission quantity of the additional DMRS for the UE according to the frequency offset of the UE.
In some embodiments, the method further comprises:
determining the frequency offset grade or scene information of the frequency offset of the UE;
step S202, determining, for the UE, the number of transmission of the additional DMRS according to the frequency offset of the UE, including: and determining the transmission quantity of the additional DMRS for the UE according to the frequency offset grade or the scene information.
In some embodiments, applied to a base station or the UE, the determining the frequency offset of the UE to be configured includes: the base station determines the uplink frequency offset of the UE to be configured; or the UE to be configured determines the downlink frequency offset of the UE to be configured.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S11, the UE to be configured determines own downlink frequency offset;
step S12, the UE determines the transmission quantity of the additional DMRS for the UE according to the downlink frequency offset of the UE;
step S13, the UE informs the base station of the transmission quantity of the additional DMRS through bit information added in the PUCCH or the PUSCH;
here, the added bit information includes at least 1 bit, and may be 2 bits, 3 bits, or the like, for example. The increased number of bits information relates to the number of transmissions or the manner in which the number of transmissions is made. For example, the number of transmissions is 10, then converted to 2, then 4 bits are required; as another example, if the current 3GPP protocol specifies that the number of transmission modes includes 3 modes, 2 bits of information are required to represent the 3 modes, and if the additional DMRS is not transmitted, the number of modes is 4, and 2 bits of information are required.
Here, the UE sends the number of transmission of the additional DMRS to the base station, and in other embodiments, the UE may also send the frequency offset or the frequency offset level to the base station, so that the base station determines the number of transmission of the additional DMRS according to the frequency offset or the frequency offset level according to a certain rule; of course, the UE may determine the transmission number of the additional DMRS according to the same rule as the base station, so that after the base station configures the additional DMRS for the UE according to the transmission number, the UE may parse according to the transmission number.
Step S14, the base station configures the additional DMRS for the UE according to the transmission quantity of the additional DMRS reported by the UE;
and step S15, the UE analyzes the additional DMRS at the fixed time-frequency domain position according to the transmission quantity of the additional DMRS, and the additional DMRS is used for enhancing downlink service demodulation.
As shown in fig. 2B, the abscissa represents the time domain, the ordinate represents the frequency domain, each small square represents one resource block, that is, represents the transmission position of the additional DMRS, where the resource block reference numerals 21, 22 and 23 represent the positions of transmitting the additional DMRS by different interfaces or different users, respectively. And when the UE analyzes, the additional DMRS is analyzed at the fixed time-frequency domain position and used for enhancing downlink service demodulation.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S21, the UE to be configured determines own downlink frequency offset;
step S22, the UE determines the frequency offset grade or the scene information of the frequency offset of the UE;
step S23, determining the transmission number of the additional DMRS for the UE according to the frequency offset grade or the scene information;
step S24, the UE informs the base station of the transmission quantity of the additional DMRS through bit information added in the PUCCH or the PUSCH;
Step S25, the base station configures the additional DMRS for the UE according to the transmission quantity of the additional DMRS reported by the UE;
in step S26, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the number of the transmitted additional DMRS, for enhancing downlink traffic demodulation.
Step S22 and step S23 in the embodiments of the present application actually provide a way to implement step S102.
Here, the UE sends the number of transmission of the additional DMRS to the base station, and in other embodiments, the UE may also send the frequency offset level and the scene information to the base station, so that the base station determines the number of transmission of the additional DMRS according to the frequency offset level or the scene information according to a certain rule; of course, the UE may determine the transmission number of the additional DMRS according to the same rule as the base station, so that after the base station configures the additional DMRS for the UE according to the transmission number, the UE may parse according to the transmission number.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S31, the UE to be configured determines own downlink frequency offset;
step S32, the UE informs the base station of the frequency offset through bit information added in PUCCH or PUSCH, so that the base station determines the transmission quantity of the additional DMRS for the UE according to the frequency offset;
Step S33, the base station determines the transmission quantity of the additional DMRS according to the frequency offset reported by the UE;
step S34, the base station configures the additional DMRS for the UE according to the determined transmission quantity of the additional DMRS;
in step S35, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the determined number of the additional DMRS for enhancing downlink demodulation.
Step S32 and step S33 in the embodiments of the present application actually provide a way to implement step S102.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S41, the UE to be configured determines own downlink frequency offset;
step S42, the UE determines the frequency offset grade of the UE according to the frequency offset of the UE;
step S43, the UE informs the base station of the frequency offset grade through bit information added in PUCCH or PUSCH, so that the base station determines the transmission quantity of the additional DMRS for the UE according to the frequency offset;
step S44, the base station determines the transmission quantity of the additional DMRS according to the frequency offset grade reported by the UE;
In step S45, the base station configures the additional DMRS for the UE according to the determined number of transmissions of the additional DMRS.
In step S46, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the determined number of the additional DMRS for enhancing downlink demodulation.
Step S42, step S43, and step S44 in the embodiments of the present application actually provide a way to implement step S102.
In some embodiments, the method further comprises: if the maximum transmission number of the additional DMRS is N groups, determining that the frequency offset level includes N levels: level 1, level 2 to level N;
the determining the transmission number of the additional DMRS for the UE according to the frequency offset level includes: when the belonging frequency offset grade is grade 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging frequency offset grade is grade 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the frequency offset grade is grade N, determining that the transmission number of the additional DMRS for the UE is N groups.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
Step S51, the base station determines the uplink frequency offset of the UE to be configured;
step S52, the base station determines the mean value or the mean square error F of the uplink frequency offset of the UE;
step S53, the base station determines the transmission number of the additional DMRS for the UE according to the mean value or the mean square error F.
In step S54, the base station broadcasts system information to trigger the UE to page, where the system information carries the transmission number of the additional DMRS, so that the UE analyzes the additional DMRS according to the transmission number of the additional DMRS to enhance downlink service demodulation.
In step S55, the base station configures the additional DMRS for the UE according to the determined number of transmissions of the additional DMRS.
In step S56, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the determined number of the additional DMRS for enhancing downlink demodulation.
Step S52 and step S53 in the embodiments of the present application actually provide a way to implement step S102.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S61, the base station determines the uplink frequency offset of the UE to be configured;
Step S62, the base station determines the mean value or the mean square error F of the uplink frequency offset of the UE;
step S63, the base station determines the range or the scene information of the mean value or the mean square error F;
step S64, the base station determines the transmission number of the additional DMRS for the UE according to the range or the scene information;
in step S65, the base station broadcasts system information to trigger the UE to page, where the system information carries the transmission number of the additional DMRS, so that the UE analyzes the additional DMRS according to the transmission number of the additional DMRS to enhance downlink service demodulation.
Step S66, the base station configures the additional DMRS for the UE according to the determined transmission number of the additional DMRS.
In step S67, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the determined number of the additional DMRS for enhancing downlink demodulation.
Step S63 and step S64 in the embodiments of the present application actually provide a way to implement step S53.
In some embodiments, the method further comprises: if the maximum value of the transmission number or transmission mode of the additional DMRS is N groups, determining that the range to which the mean value or the mean square error F belongs includes N ranges from small to large, which are not overlapped with each other: range 1, range 2 to range N;
The determining, according to the range, the number of transmission of the additional DMRS for the UE includes: when the belonged range is range 1, determining that the number of the transmission of the additional DMRS is 1 group for the UE; when the belonging range is the range 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the range is the range N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
In some embodiments, the method further comprises: if the maximum value of the transmission number or the transmission mode of the additional DMRS is N groups, determining that the scene information includes N scenes: scene 1, scene 2 to scene N; dividing the scene information into N types according to the average value or the mean square error F or the frequency offset: scene 1, range 2 to scene N;
the determining, according to the scenario information, the number of transmission of the additional DMRS for the UE includes: when the belonging scene information is scene 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging scene information is scene 2, determining that the number of the transmission of the additional DMRS for the UE is 2 groups; and when the belonging scene information is scene N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S71, the base station determines the uplink frequency offset of the UE to be configured;
step S72, the base station determines the frequency offset grade of the UE according to the frequency offset of the UE;
step S73, the base station informs the UE of the frequency offset level or the frequency offset through bit information added in DCI, so that the UE determines the number of transmission of the additional DMRS for the UE according to the frequency offset level or the frequency offset.
Step S74, the UE determines the transmission quantity of the additional DMRS for the UE according to the frequency offset grade or the frequency offset;
step S75, the base station determines the transmission quantity of the additional DMRS for the UE according to the frequency offset grade or the frequency offset;
in step S76, the base station configures the additional DMRS for the UE according to the determined number of transmissions of the additional DMRS.
In step S77, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the determined number of transmissions of the additional DMRS, for enhancing downlink traffic demodulation.
In some embodiments, the method further comprises:
if the maximum value of the transmission number or the transmission mode of the additional DMRS is N groups, determining that the frequency offset level includes N levels: level 1, level 2 to level N;
The determining the transmission number of the additional DMRS for the UE according to the frequency offset level includes: when the belonging frequency offset grade is grade 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging frequency offset grade is grade 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the frequency offset grade is grade N, determining that the transmission number of the additional DMRS for the UE is N groups.
The embodiment provides a method for sending an enhanced demodulation reference signal, which applies a terminal and a base station, and comprises the following steps:
step S81, a base station determines the uplink frequency offset of the UE to be configured;
step S82, the base station determines the frequency offset grade of the UE according to the frequency offset of the UE;
step S83, the base station determines the transmission number of the additional DMRS for the UE according to the frequency offset grade or the frequency offset;
in step S84, the base station informs the UE of the transmission number of the additional DMRS through bit information added in the DCI.
In step S85, the base station configures the additional DMRS for the UE according to the determined number of transmissions of the additional DMRS.
In step S86, the UE analyzes the additional DMRS at the fixed time-frequency domain location according to the notified number of the additional DMRS, and uses the additional DMRS to enhance downlink traffic demodulation.
Here, the base station sends the number of the additional DMRS to the UE, and in other embodiments, the base station may also send the frequency offset level or the frequency offset to the UE, so that the UE determines the number of the additional DMRS according to the frequency offset level or the frequency offset according to a certain rule; of course, the base station may determine the transmission number of the additional DMRS according to the same rule as the UE, so that after the base station configures the additional DMRS for the UE according to the transmission number, the UE may parse according to the transmission number.
In some of the above embodiments, the method further comprises:
step 91, determining the speed or frequency offset of the UE;
step 92, determining the size of the current period T according to the speed or the frequency offset;
and 93, determining the frequency offset of the UE in the current period T.
Here, the speed or the frequency offset may be an average speed over a period of time, or the frequency offset calculated from the average speed, and the period of time may be the last period T1 or the first few periods, for example, the first two periods.
In some of the above embodiments, the frequency offset level is determined by setting different frequency offset thresholds; the method further comprises the steps of: acquiring the user quantity of each cell and the frequency offset of the UE in the change process of the user quantity of each cell within a period of time; obtaining a relation table of the user quantity and the frequency offset in each time period of each cell according to the user quantity of each cell and the frequency offset of the corresponding user; and determining a frequency offset threshold according to the relation table of the user quantity and the frequency offset.
In some embodiments described above, the range to which the mean or mean square error F belongs is determined by setting different parameter thresholds; the method further comprises the steps of: acquiring the user quantity of each cell and the frequency offset of the UE in the change process of the user quantity of each cell within a period of time; performing envelope peak sampling after calculating each mean value or mean square error according to the frequency offset of the UE; and after sorting according to the size of the sampling values, taking the obtained envelope peak value as a parameter threshold value.
In some embodiments, the range of the mean value or the mean square error F is determined by setting different parameter thresholds, and the frequency offset level is determined by setting different frequency offset thresholds; the method further comprises the steps of: and counting the throughput of each cell in a period of time, and adjusting the frequency offset threshold or the parameter threshold according to the throughput.
In some embodiments, if the maximum transmission number of the additional DMRS is N groups, it is determined that the scene information includes N scenes: scene 1, scene 2 to scene N; dividing the scene information into N types according to the average value or the mean square error F or the frequency offset: scene 1, range 2 to scene N; in 3GPP, the transmission methods of the additional DMRS include 3 types, and the number of transmissions corresponding to the 3 types is 1 group, 2 groups, and 3 groups, respectively.
Here, assuming that n=3, the determining, according to the scenario information, the transmission number of the additional DMRS for the UE to be configured includes: when the belonging scene information is scene 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging scene information is scene 2, determining that the number of the transmission of the additional DMRS for the UE is 2 groups; and when the belonging scene information is scene 3, determining that the number of the transmission of the additional DMRS for the UE is 3 groups.
If the maximum transmission number of the additional DMRS is 3, it is determined that the threshold range includes three ranges from small to large that are not overlapped with each other: range 1, range 2, and range 3; wherein: determining the transmission number of the additional DMRS for the UE to be configured according to the threshold range; when the threshold range is range 1, determining that the number of the transmission of the additional DMRS is 1 group for the UE; when the threshold range is range 2, determining that the number of the transmission of the additional DMRS is 2 groups for the UE; and when the threshold range is 3, determining that the number of the transmission of the additional DMRS for the UE is 3 groups.
Fifth generation communication system (5) th Generation, 5G) is about to face a higher frequency, faster movement speed. Terminals need to face a wider communication environment, such as dense urban areas, suburban areas, open scenes, walking speeds, low speeds in urban areas, highways, ordinary railways, highways and the like, and the terminals still need to maintain good service experience in such speed scenes.
In order to cope with various motion speed scenes, the 5G provides an additional DMRS to improve the demodulation accuracy of the terminal in a high-speed moving state. The network needs to be configured differently according to the use scene, so that the network needs to be configured respectively according to different application environments, planning is performed in advance, various environments need to be subjected to early data acquisition, analysis and classification, each base station of each zone is configured, the workload is high, unreasonable configuration parameters can not cope with the fluctuation of the scene, such as the tidal phenomenon of a user, and the like, and in which scene the early theoretical analysis and simulation are needed for which configuration is optimal.
In order to cope with the load environment and the massive data analysis and classification, the embodiment of the application provides a technical scheme of adaptively configuring and transmitting an additional DMRS, the error risk of manual configuration is reduced through three schemes of base station calculation cell level configuration, base station configuration user level after terminal reporting, base station calculation user level reconfiguration and the like, the system can form an artificial intelligence (AI, artificial Intelligence) system through various collected factors, parameters are adaptively selected for each scene, the environment suitability is improved, and the user perception is improved.
The adaptive transmission scheme of the additional DMRS is as follows:
fig. 3 is a schematic implementation flow chart of a cell-level adaptive configuration and period updating method of an additional DMRS in the embodiment of the present application, as shown in fig. 3, where the method includes:
step S301, UE accesses to the cell in the network, triggering the downlink service;
step S302, the base station initially defaults to adopt the last configured additional DMRS rule;
the base station in the embodiment of the present application may be understood as a cell in the network, so the scheme may be understood as a cell-level adaptive configuration additional DMRS.
Step S303, the base station calculates the mean value or mean square error F of the uplink frequency offset of the UE in the system in the period T; if F < F1, go back to step S302; if f1= < F2, determining that the current scene is a medium-high speed scene, and entering step S304; if f2= < F3, determining that the current scene is a high-speed scene, and proceeding to step S304; if F > =f3, determining that the current scene is a high-speed rail scene, and entering step S304;
here, the letter F is used to denote the mean or mean square error of the uplink frequency offset.
Step S304, the base station updates the system information (RMSI, remaining Minimum System Information) of the rest minimum set, and then triggers paging (paging);
here, updating the RMSI may be understood as the base station broadcasting the RMSI, where the RMSI carries the number of transmissions of the additional DMRS. It should be noted that, if it is determined that the current scene is a medium-high speed scene, step S305 is entered; if it is determined that the current scene is a high-speed scene, step S306 is entered; if it is determined that the current scene is a high-speed rail scene, step S307 is entered;
Step S305, the base station transmits 1 group of additional DMRS in downlink;
step S306, the base station transmits 2 sets of additional DMRS in downlink;
step S307, the base station downlink transmits 3 sets of additional DMRS;
in step S308, the base station updates the number of DMRS transmitting additional in period T.
Here, the base station updates the transmission number of the additional DMRS determined according to the current scenario.
Here, the period T may be personalized configuration performed by the terminal according to the frequency offset change, and when the movement speed is high, the measured frequency offset is high, and the configuration of T is low; when the frequency offset is small, T may be configured to be large.
From the above embodiments, it can be seen that the base station counts the frequency offset (i.e. frequency offset) of the user triggering the downlink service requirement in the access network within a period of time, calculates F (which can be simply calculated or can be complex calculated) under the current environment according to the distribution condition of the frequency offset, for example, obtains F by directly taking the mean value or mean square error of the frequency offset of the user having the downlink service requirement in the connection state, and compares the F with the threshold (F1, F2 and F3) set in the initial stage to determine the current scene. And the base station updates the system configuration, informs the terminal of what additional DMRS transmission scheme is adopted by the base station, and demodulates the downlink service according to the appointed configuration after the terminal analyzes the system information.
The adaptive transmission scheme II of the additional DMRS:
fig. 4 is a schematic implementation flow chart of a user-level adaptive configuration and period updating method of an additional DMRS based on terminal reporting information, and as shown in fig. 4, the method includes:
step S401, UE accesses to the network to trigger the downlink service;
step S402, the UE calculates the downlink frequency offset delta f;
if Δf < Δf1, determining the frequency offset level to be 0; if Δf1= < Δf < Δf2, determining the frequency offset level to be 1; if Δf2= < Δf < Δf3, determining the frequency offset level to be 2; if Δf > =Δf3, determining the frequency offset level to be 3; wherein, the higher the level, the greater the frequency offset.
Step S403, the UE adds 2bit information in the period T through a physical uplink control CHannel (Physical Uplink Control Channel, PUCCH) or a PUSCH uplink physical shared CHannel (Physical Uplink Shared chnnel, PUSCH), and notifies the base station of the transmission number of the additional DMRS or the terminal frequency offset level;
for example, 00 indicates no additional DMRS,01 indicates 1 set of additional DMRS,10 indicates 2 sets of additional DMRS, and 11 indicates 3 sets of additional DMRS; for another example, 00 indicates 2 sets of additional DMRS,01 indicates 0 sets of additional DMRS,10 indicates 3 sets of additional DMRS, and 11 indicates 1 set of additional DMRS;
Step S404, the base station configures the sending number of the additional DMRS for each UE independently according to the information reported by each UE;
here, the information reported by the UE includes the number of transmissions of the additional DMRS, or the terminal frequency offset level.
Step S405, the UE analyzes the additional DMRS at the fixed time-frequency domain position according to the determined transmission quantity of the additional DMRS for enhancing the downlink service demodulation;
in step S406, the UE transmits the updated frequency offset level in the period T.
From the above, the terminal calculates the frequency offset value, then carries out frequency offset level estimation, and then sends the frequency offset level or the sending number of the additional DMRS to the base station through 2bit information agreed with the base station in the PUCCH or PUSCH. The base station sends the additional DMRS to each UE according to the additional DMRS, and the UE analyzes the additional DMRS at a preset position according to the additional DMRS sending relation corresponding to the frequency offset grade reported in the earlier stage, so that the demodulation effect of the downlink PDSCH is improved, and the user perception is improved.
The period T in fig. 4 is a personalized configuration of the terminal according to the frequency offset change, when the movement speed is high, the measured frequency offset is high, and the configuration of T is low; when the frequency offset is small, T may be configured to be large.
The adaptive transmission scheme III of the additional DMRS:
fig. 5 is a schematic implementation flow chart of a user-level adaptive configuration and period updating method based on an additional DMRS of a base station transmitting DCI information, and as shown in fig. 5, the method includes:
step S501, UE accesses to a network to trigger downlink service;
here, the base station does not transmit an additional DMRS to the initially accessed UE;
step S502, the base station calculates the uplink frequency offset delta f of each UE in the period T; if Δf < Δf1, determining the frequency offset level to be 0; if Δf1= < Δf < Δf2, determining the frequency offset level to be 1; if Δf2= < Δf < Δf3, determining the frequency offset level to be 2; if Δf > =Δf3, determining the frequency offset level to be 3;
step S503, the base station transmits the transmission number of the additional DMRS to the UE through adding 2bit information in DCI of the UE;
for example, 00 indicates no additional DMRS,01 indicates 1 set of additional DMRS,10 indicates 2 sets of additional DMRS, and 11 indicates 3 sets of additional DMRS; for another example, 00 indicates that 3 sets of additional DMRS are transmitted, 01 indicates that 2 sets of additional DMRS are transmitted, 10 indicates that 1 set of additional DMRS are transmitted, and 11 indicates that 0 sets of additional DMRS are transmitted;
in step S504, the UE analyzes the DCI information to obtain the number of additional DMRS transmissions, and analyzes the DMRS at the specified time-frequency domain location according to the protocol to enhance downlink service demodulation.
Here, the protocol may be a related protocol, such as a 3GPP protocol.
From the above, the base station periodically calculates the frequency offset value of each UE, and issues the number of transmission of the additional DMRS to each user according to the frequency offset value, where the number of transmission information is carried by the 2bit information agreed by the base station and the terminal added in the DCI information. And the UE analyzes the additional DMRS according to the appointed information in the analysis DCI, so that the demodulation effect of the downlink PDSCH is effectively improved, and the user perception is improved.
Threshold decision and calculation scheme:
in the three schemes, the thresholds (such as F1, F2 and F3, Δf1, Δf2 and Δf3) are empirical values, manual operation is required for configuration and re-modification, the operation is very troublesome, and each cell has different user quantity and different user states at different time points, the fixed threshold cannot be adapted to a time-varying environment, at this time, the user quantity variation trend of each cell is obtained by combining the behavior of AI and statistics of big data, and the base station calculates or receives the obtained frequency offset information and the covered scene information when the network planning is performed by the UE. And part of scenes can be directly classified and removed through scene information, threshold calculation is carried out in the rest scenes, a time and threshold relation table is finally obtained, and self-adaptive threshold configuration of the cell is carried out according to the time and threshold relation table. And generating a data relation applicable in the future by using a large data statistics mode and utilizing past and present data statistics.
Fig. 6 is a schematic diagram of an implementation flow of introducing a threshold decision factor and analyzing and calculating a threshold according to an embodiment of the present application, as shown in fig. 6, where the flow includes:
step S601, statistics of tide change rules of user quantity of each cell in a period of time;
step S602, counting the frequency offset distribution state of the UE in the process of the tidal change rule of the user quantity of each cell;
step S603, classifying traffic scenes in the coverage area of the cell during network planning;
step S604, drawing a three-dimensional graph of time, user quantity and frequency offset;
step S605, obtaining a relation table of user quantity and frequency offset of important time nodes in each time period of each cell;
here, the user quantity of each cell and the frequency offset of the UE in the change process of the user quantity of each cell in a period of time are obtained; obtaining a relation table of the user quantity and the frequency offset in each time period of each cell according to the user quantity of each cell and the frequency offset of the corresponding user; and determining a frequency offset threshold according to the relation table of the user quantity and the frequency offset.
Step S606, the threshold value in the self-adaptive configuration scheme is that envelope peak value sampling is carried out after each mean value or mean square error is calculated according to the frequency deviation distribution, and the envelope peak value of the first three of the sequences is obtained;
here, the sampling values of the first three in the order from the small to the large may be F1, F2, and F3, respectively.
Step S607, taking the envelope peak value obtained by calculation of the nodes in each time period and the important time as a threshold value to be input into the network management system of the corresponding cell;
step 608, the network management system sends the threshold corresponding to the current moment to the designated cell according to the threshold-time table, and the cell performs threshold configuration according to the threshold of the time division.
In another embodiment, training is performed by stabilizing the model for counting throughput over a period of time, and then adjusting thresholds (e.g., F1, F2, and F3, Δf1, Δf2, and Δf3) in three schemes according to throughput. And (3) adjusting the value of the threshold, collecting data for a plurality of days in a fixed time period of each day of the high-speed rail scene, and adjusting the threshold until the throughput reaches the maximum. And (3) carrying out statistics on information such as the tidal conditions of traffic flow and accident multiple road sections in the expressway environment, and making an optimal threshold value and a time-varying optimal threshold value.
From the above, the embodiments of the present application have the following features: 1) Configuring different additional DMRS numbers according to a speed threshold; 2) Analyzing and selecting a threshold factor with big data; 3) Three schemes are provided, namely: adopting a cell-level additional DMRS self-adaptive configuration scheme; UE-level additional DMRS self-adaptive configuration scheme based on the frequency offset level reported by UE; a UE-level additional DMRS self-adaptive configuration scheme based on DCI information issued by a base station;
Compared with the prior art, the application has the following technical advantages: 1) The self-adaptive configuration scheme improves the working efficiency and matches the time-varying environment; 2) The additional DMRS cost matched with the time-varying environment is selected, so that the effective transmission data quantity, namely balance cost and data transmission requirement, is improved; 3) The cell-level periodic updating configuration scheme can reduce labor cost and improve network working efficiency; 4) And obtaining threshold values in each scheme through big data and AI factors, and adapting to the time-varying environment.
Based on the foregoing embodiments, the embodiments of the present application provide a transmitting apparatus for enhancing a demodulation reference signal, where the apparatus includes units included, and modules included in the units may be implemented by a processor in a computer device (base station or UE); of course, the method can also be realized by a specific logic circuit; in an implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
Fig. 7A is a schematic structural diagram of a transmitting apparatus for enhancing a demodulation reference signal according to an embodiment of the present application, as shown in fig. 7A, the apparatus 70 includes:
a first determining unit 71, configured to determine a frequency offset of the UE to be configured;
And a second determining unit 72, configured to determine, for the UE, the number of transmission of the additional DMRS according to the frequency offset of the UE.
In some embodiments, the apparatus further comprises: a third determining unit, configured to determine a frequency offset level to which the frequency offset of the UE belongs or scene information to which the frequency offset belongs; correspondingly, the second determining unit is configured to: and determining the transmission quantity of the additional DMRS for the UE according to the frequency offset grade or the scene information.
In some embodiments, when a first determining unit of the apparatus is applied to a base station, the first determining unit is configured to determine an uplink frequency offset of the UE to be configured; or when the first determining unit of the device is applied to the UE, the first determining unit is used for determining the downlink frequency offset of the first determining unit.
Based on the foregoing embodiments, an embodiment of the present application provides a transmitting device for enhancing a demodulation reference signal, where the device includes a first determining unit, a second determining unit, and a first notifying unit that are located at a UE side, where:
the first determining unit is used for determining the downlink frequency offset of the first determining unit;
a second determining unit, configured to determine, for the UE, a transmission number of the additional DMRS according to the frequency offset of the UE;
A first notification unit, configured to notify the base station of the number of transmissions of the additional DMRS through bit information added in the PUCCH or PUSCH.
In some embodiments, the apparatus further comprises a configuration unit located at the base station side, wherein:
and the configuration unit is used for configuring the additional DMRS for the UE according to the transmission quantity of the additional DMRS reported by the UE.
In some embodiments, the apparatus further includes an parsing unit located at the UE side, configured to parse the additional DMRS at a fixed time-frequency domain location according to the number of transmissions for notifying the additional DMRS, where the additional DMRS is used to enhance downlink traffic demodulation.
Based on the foregoing embodiments, an embodiment of the present application provides a transmitting apparatus for enhancing a demodulation reference signal, where the apparatus includes a first determining unit and a second determining unit located at a UE side, where the second determining unit includes a first determining module and a second determining module, where:
the first determining unit is used for determining the downlink frequency offset of the first determining unit;
a first determining module, configured to determine a frequency offset level of the UE according to the frequency offset of the UE;
and the second determining module is used for notifying the frequency deviation grade or the frequency deviation to the base station through bit information added in the PUCCH or the PUSCH, so that the base station determines the transmission quantity of the additional DMRS for the UE according to the frequency deviation grade or the frequency deviation.
In some embodiments, the apparatus further comprises a fourth determining unit and a configuring unit located at the base station side, wherein: a fourth determining unit, configured to determine, according to the frequency offset level or the frequency offset reported by the UE, a transmission number of the additional DMRS; and the configuration unit is used for configuring the additional DMRS for the UE according to the determined transmission quantity of the additional DMRS.
In some embodiments, the apparatus further includes an parsing unit located at the UE side, configured to parse the additional DMRS at a fixed time-frequency domain location according to the number of transmissions for notifying the additional DMRS, where the additional DMRS is used to enhance downlink traffic demodulation.
In some embodiments, the apparatus further includes a seventh determining unit located at the base station side, configured to determine that the frequency offset level includes N levels if the maximum transmission number of the additional DMRS is N groups: level 1, level 2 to level N; correspondingly, the fourth determining unit is configured to: when the belonging frequency offset grade is grade 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging frequency offset grade is grade 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the frequency offset grade is grade N, determining that the transmission number of the additional DMRS for the UE is N groups.
Based on the foregoing embodiments, an embodiment of the present application provides a transmitting device for enhancing a demodulation reference signal, where the device includes a first determining unit and a second determining unit located at a base station side, where the second determining unit includes a third determining module and a fourth determining module, where:
a first determining unit, configured to determine an uplink frequency offset of a UE to be configured;
a third determining module, configured to determine a mean value or a mean square error F of the uplink frequency offset of the UE;
and a fourth determining module, configured to determine, for the UE, the number of transmissions of the additional DMRS according to the mean value or the mean square error F.
In some embodiments, the apparatus further comprises: and the broadcasting unit is positioned at the base station side and is used for broadcasting system information to trigger the UE to page, wherein the system information carries the transmission number of the additional DMRS, so that the UE analyzes the additional DMRS according to the transmission number of the additional DMRS and is used for enhancing downlink service demodulation.
In some embodiments, the apparatus further comprises: and the issuing unit is positioned at the base station side and is used for issuing the sending number of the additional DMRS to the UE through adding bit information in DCI of the UE, so that the UE analyzes the additional DMRS to be used for enhancing downlink service demodulation according to the obtained sending number of the additional DMRS after analyzing the DCI.
Based on the foregoing embodiments, the present application provides a transmitting device for enhancing a demodulation reference signal, where the device includes a first determining unit and a second determining unit located at a base station side, where the second determining unit includes a third determining module and a fourth determining module, where the fourth determining module includes a first determining sub-module and a second determining sub-module, where:
a first determining unit, configured to determine an uplink frequency offset of a UE to be configured;
a third determining module, configured to determine a mean value or a mean square error F of the uplink frequency offset of the UE;
the first determining submodule is used for determining the range or the scene information of the mean value or the mean square error F; and the second determining submodule is used for determining the sending quantity of the additional DMRS for the UE according to the range or the scene information.
In some embodiments, the apparatus further comprises: and the broadcasting unit is positioned at the base station side and is used for broadcasting system information to trigger the UE to page, wherein the system information carries the transmission number of the additional DMRS, so that the UE analyzes the additional DMRS according to the transmission number of the additional DMRS and is used for enhancing downlink service demodulation.
In some embodiments, the apparatus further comprises: and the issuing unit is positioned at the base station side and is used for issuing the sending number of the additional DMRS to the UE through adding bit information in DCI of the UE, so that the UE analyzes the additional DMRS to be used for enhancing downlink service demodulation according to the obtained sending number of the additional DMRS after analyzing the DCI.
In some embodiments, the apparatus further comprises: a fifth determining unit located at the base station side, configured to determine that, if the maximum value of the number of transmission of the additional DMRS is N groups, the range to which the mean or mean square error F belongs includes N ranges from small to large that are not overlapped with each other: range 1, range 2 to range N;
correspondingly, the second determining submodule is configured to: when the belonged range is range 1, determining that the number of the transmission of the additional DMRS is 1 group for the UE; when the belonging range is the range 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the range is the range N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
In some embodiments, the apparatus further comprises the following units located at the base station side:
a sixth determining unit, configured to determine that the scene information includes N types of scenes if the maximum transmission number of the additional DMRS is N groups: scene 1, scene 2 to scene N;
the dividing unit is used for dividing the scene information into N types according to the size of the mean value or the mean square error F or the size of the frequency offset: scene 1, range 2 to scene N;
the second determination submodule is used for: when the belonging scene information is scene 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging scene information is scene 2, determining that the number of the transmission of the additional DMRS for the UE is 2 groups; and when the belonging scene information is scene N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
In the above embodiment, the apparatus further includes an eighth determining unit and a ninth determining unit located at the base station or the UE side, where:
an eighth determining unit, configured to determine a speed or a frequency offset of the UE;
a ninth determining unit, configured to determine the size of the current period T according to the speed or the frequency offset; correspondingly, the first determining unit is configured to determine a frequency offset of the UE in a current period T.
In the above embodiment, the frequency offset level is determined by different set frequency offset thresholds; the device further comprises a first acquisition unit, a tenth determination unit and an eleventh determination unit which are positioned at the base station or the UE side, wherein the device further comprises:
a first obtaining unit, configured to obtain a user quantity of each cell and a frequency offset of the UE in a process of changing the user quantity of each cell in a period of time;
a tenth determining unit, configured to determine a relationship table between the user quantity and the frequency offset in each time period of each cell according to the user quantity of each cell and the frequency offset of the corresponding user;
and the eleventh determining unit is used for determining a frequency offset threshold according to the relation table of the user quantity and the frequency offset.
In the above embodiment, the range to which the mean or mean square error F belongs is determined by setting different parameter thresholds; the device also comprises the following units at the base station or the UE side:
A second obtaining unit, configured to obtain a user quantity of each cell and a frequency offset of the UE in a process of changing the user quantity of each cell in a period of time;
the sampling unit is used for carrying out envelope peak sampling after calculating each mean value or mean square error according to the frequency offset of the UE;
and the sorting unit is used for sorting according to the size of the sampling value and taking the obtained envelope peak value as a parameter threshold value.
In the above embodiment, the range to which the mean value or the mean square error F belongs is determined by setting different parameter thresholds, and the frequency offset level is determined by setting different frequency offset thresholds; the device also comprises the following units at the base station or the UE side:
a third acquiring unit, configured to acquire throughput of each cell in a period of time;
and the adjusting unit is used for adjusting the frequency offset threshold value or the parameter threshold value according to the throughput.
The description of the apparatus embodiments above is similar to that of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the device embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.
In the embodiment of the present application, if the method for transmitting the enhanced demodulation reference signal is implemented in the form of a software functional module, and sold or used as a separate product, the method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or portions contributing to the related art may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a terminal or a base station, etc.) to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Correspondingly, the embodiment of the application provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor realizes the steps in the method for sending the enhanced demodulation reference signal when executing the program.
Correspondingly, the embodiment of the application provides a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps in the method for transmitting the enhanced demodulation reference signal.
It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, please refer to the description of the method embodiments of the present application for understanding.
It should be noted that fig. 7B is a schematic diagram of a hardware entity of a computer device in the embodiment of the present application, as shown in fig. 7B, the hardware entity of the computer device 700 includes: a processor 701, a communication interface 702 and a memory 703, wherein
The processor 701 generally controls the overall operation of the computer device 700.
Communication interface 702 may enable the computer device to communicate with other terminals or servers over a network.
The memory 703 is configured to store instructions and applications executable by the processor 701, and may also cache data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or processed by various modules in the processor 701 and the computer device 700, which may be implemented by a FLASH memory (FLASH) or a random access memory (Random Access Memory, RAM).
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the integrated units described above may be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or part of what contributes to the related art may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (20)

1. The method for transmitting the enhanced Demodulation Reference Signal (ADDRs) is characterized by being applied to a base station or a terminal to be configured (UE), and comprises the following steps:
Determining the frequency offset of the UE;
determining the transmission number of the additional DMRS for the UE according to the frequency offset of the UE;
when the method is applied to the UE, the determining, for the UE, the number of transmission of the additional DMRS according to the frequency offset of the UE includes:
the UE determines the frequency offset grade of the UE according to the frequency offset of the UE;
and the UE informs the frequency deviation grade or the frequency deviation to the base station through bit information added in the PUCCH or the PUSCH, so that the base station determines the transmission quantity of the additional DMRS for the UE according to the frequency deviation grade or the frequency deviation.
2. The method as recited in claim 1, further comprising:
determining the frequency offset grade or scene information of the frequency offset of the UE;
the determining the transmission number of the additional DMRS for the UE according to the frequency offset of the UE includes: and determining the transmission quantity of the additional DMRS for the UE according to the frequency offset grade or the scene information.
3. The method according to claim 1 or 2, wherein the determining the frequency offset of the UE applied to the base station or the UE comprises:
the base station determines the uplink frequency offset of the UE; or alternatively, the process may be performed,
And the UE determines the downlink frequency offset of the UE.
4. The method of claim 3, when applied to the UE, further comprising:
and the UE informs the base station of the transmission quantity of the additional DMRS through bit information added in the PUCCH or the PUSCH.
5. The method according to claim 1 or 4, further comprising:
the base station determines the transmission quantity of the additional DMRS according to the frequency offset grade or the frequency offset reported by the UE;
and the base station configures the additional DMRS for the UE according to the transmission quantity of the additional DMRS reported by the UE or the determined transmission quantity of the additional DMRS.
6. The method as recited in claim 5, further comprising:
and the UE analyzes the additional DMRS at the fixed time-frequency domain position according to the sending quantity of the additional DMRS, and is used for enhancing downlink service demodulation.
7. The method of claim 3, wherein the determining, for the UE, the number of transmissions of the additional DMRS according to the frequency offset of the UE when applied to the base station comprises:
the base station determines the mean value or the mean square error F of the uplink frequency offset of the UE;
And the base station determines the transmission quantity of the additional DMRS for the UE according to the mean value or the mean square error F.
8. The method of claim 7 wherein the base station determining the number of transmissions of the additional DMRS for the UE based on the mean or mean square error F comprises:
determining the range or scene information of the mean value or the mean square error F;
and determining the transmission quantity of the additional DMRS for the UE according to the range or the scene information.
9. The method according to claim 7 or 8, further comprising:
the base station broadcasts system information to trigger the UE to page, wherein the system information carries the transmission number of the additional DMRS, so that the UE analyzes the additional DMRS according to the transmission number of the additional DMRS to enhance downlink service demodulation.
10. A method according to claim 3, when applied to the base station, further comprising:
and the base station transmits the transmission number of the additional DMRS to the UE through adding bit information in DCI of the UE, so that the UE analyzes the additional DMRS to be used for enhancing downlink service demodulation according to the obtained transmission number of the additional DMRS after analyzing the DCI.
11. The method as recited in claim 8, further comprising:
if the maximum transmission number of the additional DMRS is N groups, determining that the range to which the mean or mean square error F belongs includes N ranges from small to large that are not overlapped with each other: range 1, range 2 to range N;
the determining, according to the range, the number of transmission of the additional DMRS for the UE includes: when the belonged range is range 1, determining that the number of the transmission of the additional DMRS is 1 group for the UE; when the belonging range is the range 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the range is the range N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
12. The method as recited in claim 8, further comprising:
if the maximum transmission number of the additional DMRS is N groups, determining that the scene information includes N scenes: scene 1, scene 2 to scene N;
dividing the scene information into N types according to the average value or the mean square error F or the frequency offset: scene 1, range 2 to scene N;
the determining, according to the scenario information, the number of transmission of the additional DMRS for the UE includes: when the belonging scene information is scene 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging scene information is scene 2, determining that the number of the transmission of the additional DMRS for the UE is 2 groups; and when the belonging scene information is scene N, determining that the number of the transmission of the additional DMRS for the UE is N groups.
13. The method as recited in claim 5, further comprising:
if the maximum transmission number of the additional DMRS is N groups, determining that the frequency offset level includes N levels: level 1, level 2 to level N;
the determining the transmission number of the additional DMRS for the UE according to the frequency offset level includes: when the belonging frequency offset grade is grade 1, determining that the transmission number of the additional DMRS for the UE is 1 group; when the belonging frequency offset grade is grade 2, determining that the transmission number of the additional DMRS for the UE is 2 groups; and when the frequency offset grade is grade N, determining that the transmission number of the additional DMRS for the UE is N groups.
14. The method of any of claims 1, 2, 4, 6 to 8, 10 to 13, wherein the determining the frequency offset of the UE comprises:
determining the speed or frequency offset of the UE;
determining the size of the current period T according to the speed or the frequency offset;
and determining the frequency offset of the UE in the current period T.
15. The method of claim 8, wherein the frequency offset level is determined by different set frequency offset thresholds; further comprises:
acquiring the user quantity of each cell and the frequency offset of the UE in the change process of the user quantity of each cell within a period of time;
Obtaining a relation table of the user quantity and the frequency offset in each time period of each cell according to the user quantity of each cell and the frequency offset of the corresponding user;
and determining a frequency offset threshold according to the relation table of the user quantity and the frequency offset.
16. The method according to claim 15, wherein the range to which the mean or mean square error F belongs is determined by setting different parameter thresholds; further comprises:
acquiring the user quantity of each cell and the frequency offset of the UE in the change process of the user quantity of each cell within a period of time;
performing envelope peak sampling after calculating each mean value or mean square error according to the frequency offset of the UE;
and after sorting according to the size of the sampling values, taking the obtained envelope peak value as a parameter threshold value.
17. The method according to claim 8, wherein the range to which the mean or mean square error F belongs is determined by setting different parameter thresholds, and the frequency offset level is determined by setting different frequency offset thresholds; further comprises:
and counting the throughput of each cell in a period of time, and adjusting the frequency offset threshold or the parameter threshold according to the throughput.
18. A transmitting apparatus for enhancing a demodulation reference signal additional DMRS, the apparatus comprising:
A first determining unit, configured to determine a frequency offset of a terminal UE to be configured;
a second determining unit, configured to determine, for the UE, a transmission number of the additional DMRS according to the frequency offset of the UE;
when the apparatus is applied to the UE, the second determining unit includes a first determining module and a second determining module, wherein,
the first determining module is used for determining the frequency offset grade of the UE according to the frequency offset of the UE;
the second determining module is configured to notify the base station of the frequency offset level or the frequency offset through bit information added in the PUCCH or PUSCH, so that the base station determines the number of transmission of the additional DMRS for the UE according to the frequency offset level or the frequency offset.
19. A computer device comprising a memory and a processor, the memory storing a computer program executable on the processor, characterized in that the processor implements the steps of the method of transmitting enhanced demodulation reference signals according to any one of claims 1 to 17 when the program is executed.
20. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor realizes the steps in the method of transmitting enhanced demodulation reference signals according to any one of claims 1 to 17.
CN201910194974.0A 2019-03-14 2019-03-14 Method, device, equipment and medium for sending enhanced demodulation reference signal Active CN111698064B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910194974.0A CN111698064B (en) 2019-03-14 2019-03-14 Method, device, equipment and medium for sending enhanced demodulation reference signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910194974.0A CN111698064B (en) 2019-03-14 2019-03-14 Method, device, equipment and medium for sending enhanced demodulation reference signal

Publications (2)

Publication Number Publication Date
CN111698064A CN111698064A (en) 2020-09-22
CN111698064B true CN111698064B (en) 2023-06-30

Family

ID=72475272

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910194974.0A Active CN111698064B (en) 2019-03-14 2019-03-14 Method, device, equipment and medium for sending enhanced demodulation reference signal

Country Status (1)

Country Link
CN (1) CN111698064B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112929311B (en) * 2021-01-26 2023-01-03 白盒子(上海)微电子科技有限公司 High-precision frequency offset estimation method for multi-user multiplexing of control channel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411800A (en) * 2015-07-29 2017-02-15 中兴通讯股份有限公司 Frequency offset pre-compensation method and device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411800A (en) * 2015-07-29 2017-02-15 中兴通讯股份有限公司 Frequency offset pre-compensation method and device

Also Published As

Publication number Publication date
CN111698064A (en) 2020-09-22

Similar Documents

Publication Publication Date Title
Corroy et al. Dynamic cell association for downlink sum rate maximization in multi-cell heterogeneous networks
US11451452B2 (en) Model update method and apparatus, and system
CN101536348B (en) Inter-cell power control in the presence of fractional frequency reuse
US9344159B2 (en) Dynamic multi-cell clustering for downlink comp in a wireless communication network
RU2448438C2 (en) Flexible channel quality indicator reporting
CN106576351A (en) Channel selection metrics in shared spectrum
CN101690292A (en) adaptive distributed frequency planning
CN103313301A (en) Method and device for realizing report measurement and report measurement result
EP2297874B1 (en) Including feedback information regarding an individual subband of a wireless channel
CN114599056A (en) Mobile communication system control method, network controller, system and storage medium
CN107404378B (en) Data transmission method and device
CN111698064B (en) Method, device, equipment and medium for sending enhanced demodulation reference signal
Sas et al. Modelling the time-varying cell capacity in LTE networks
Colonnese et al. CLEVER: A cooperative and cross-layer approach to video streaming in HetNets
Comşa et al. Reinforcement learning based radio resource scheduling in LTE-advanced
Salman et al. A joint evaluation of energy-efficient downlink scheduling and partial CQI feedback for LTE video transmission
Abkenar et al. Energy consumption tradeoff for association-free fog-iot
Park et al. Spatial capacity of LTE-based V2V communication
Guita et al. Balancing the load in LTE urban networks via inter-frequency handovers
CN108631989B (en) Transmission method and device of channel state information pilot frequency of port code division multiplexing
CN116368739A (en) Configuration of channel state information reference signals for wireless communication systems
Sheu et al. A channel reservation and preemption model using overlapping regions in sector‐based cellular networks
JP6765544B2 (en) Downlink signal pre-correction method and equipment
Huang et al. Rate-Splitting Non-orthogonal Multiple Access: Practical Design and Performance Optimization
Kapadia 5G Multi-Tier Handover with Multi-Access Edge Computing: A Deep Learning Approach

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant