CN109391570B - Communication method and device - Google Patents
Communication method and device Download PDFInfo
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- CN109391570B CN109391570B CN201710667076.3A CN201710667076A CN109391570B CN 109391570 B CN109391570 B CN 109391570B CN 201710667076 A CN201710667076 A CN 201710667076A CN 109391570 B CN109391570 B CN 109391570B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Abstract
The application discloses a communication method and a device, wherein the communication method comprises the following steps: the base station sends symbol configuration information; wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a communication method and apparatus.
Background
In an LTE (Long Term Evolution ) system, a frame structure is fixed, and symbols that can be used for uplink transmission of various channels are also fixed. For example, as shown in fig. 1, a frame structure of a TDD (Time Division Duplex) LTE system is configured as follows: under TDD ratio 2, symbols available for Uplink transmission include an Uplink Pilot Time Slot (UpPTS, Uplink Pilot Time Slot), a Subframe (Subframe) #2, and a Subframe #7, where 1 to 2 Uplink transmission symbols may be configured on the UpPTS, and 12 symbols (Extended Cyclic Prefix) or 14 symbols (Normal Cyclic Prefix) may be configured on one Subframe.
In a 5G (Fifth Generation mobile communication technology) communication system, the frame structure is also fixed, or fixed and unchangeable for a certain period of time.
In both the TDD LTE system and the 5G communication system, there is a problem of overall uplink performance loss due to inter-symbol interference difference.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides a communication method and device, which can realize adaptive configuration of uplink transmission symbols.
In a first aspect, an embodiment of the present application provides a communication method, including:
the base station sends symbol configuration information, wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In a second aspect, an embodiment of the present application provides a communication method, including:
user Equipment (UE) acquires symbol configuration information;
performing uplink transmission according to the symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In a third aspect, an embodiment of the present application provides a communication apparatus, including:
a sending module, configured to send symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In a fourth aspect, an embodiment of the present application provides a communication apparatus, including:
the acquisition module is used for acquiring symbol configuration information;
a processing module, configured to perform uplink transmission according to the symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In a fifth aspect, an embodiment of the present application provides a base station, including: a memory, a processor and a communication program stored on the memory and executable on the processor, the communication program, when executed by the processor, implementing the steps of the communication method of the first aspect described above.
In a sixth aspect, an embodiment of the present application provides a UE, including: a memory, a processor and a communication program stored on the memory and executable on the processor, the communication program, when executed by the processor, implementing the steps of the communication method of the second aspect described above.
Furthermore, an embodiment of the present application further provides a computer-readable medium, in which a communication program is stored, and the communication program, when executed by a processor, implements the steps of the communication method according to the first aspect.
Furthermore, an embodiment of the present application further provides a computer-readable medium, which stores a communication program, and the communication program realizes the steps of the communication method of the second aspect when executed by a processor.
In the embodiment of the application, interference is avoided by introducing symbol self-adaptive configuration of uplink transmission, so that the problems of performance reduction and the like caused by the difference of the interference on uplink symbols are reduced.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
Fig. 1 is a frame structure diagram of a TDD LTE system;
fig. 2 is a flowchart of a communication method according to an embodiment of the present application;
fig. 3 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure;
fig. 4 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 5 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 6 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 7 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 8 is a flowchart of another communication method provided in the embodiments of the present application;
fig. 9 is a flowchart illustrating an example of a communication method according to an embodiment of the present application;
fig. 10 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 11 is a flowchart illustrating another example of a communication method according to an embodiment of the present application;
fig. 12 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 13 is a flowchart of another example of a communication method provided in an embodiment of the present application;
fig. 14 is a communication apparatus according to an embodiment of the present application;
fig. 15 is a schematic diagram of another communication device provided in an embodiment of the present application;
fig. 16 is a schematic diagram of a base station according to an embodiment of the present application;
fig. 17 is a schematic diagram of a UE according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings, and it should be understood that the embodiments described below are only for illustrating and explaining the present application and are not intended to limit the present application.
In practical application of the TDD LTE system, there may be a difference in interference on multiple uplink symbols, for example, in an atmospheric waveguide (atm sphere Duct), interference on the uplink symbols decreases sequentially from UpPTS. As another example, when cross-slot interference occurs for some reason, interference on multiple uplink symbols is also different. Similarly, in the 5G communication system, there is also a problem that the uplink overall performance is lost due to the inter-symbol interference difference.
The application provides a communication method and device, which introduce a symbol self-adaptive mechanism for uplink transmission to reduce the influence of interference on the uplink transmission.
Fig. 2 is a flowchart of a communication method according to an embodiment of the present application. As shown in fig. 2, the communication method provided in this embodiment includes:
s201, a base station sends symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In an exemplary embodiment, the symbol configuration information may be carried by at least one of a cell-level broadcast message and UE-level grant information. However, this is not limited in this application. In other implementations, the symbol configuration information may also be carried by other messages.
The symbol configuration information carried by the cell-level broadcast message may be used to indicate to all UEs in the cell which uplink symbols are available for uplink transmission or which uplink symbols are unavailable for uplink transmission; the symbol configuration information carried by the UE-level grant information may be used to indicate to the UE which uplink symbols are available for uplink transmission or which uplink symbols are unavailable for uplink transmission.
Illustratively, the symbol configuration information may be carried by at least one of: a System Information Block (SIB) 1, a radio resource configuration common message (mobility Control info → radio resource configuration common) in the mobility Control Information, and Downlink Control Information (DCI).
Exemplarily, the communication method of the present embodiment may further include:
s200, the base station determines symbol configuration information according to the interference detection result.
Illustratively, the base station may determine an uplink symbol that can be used for uplink transmission or an uplink symbol that cannot be used for uplink transmission according to a detection result of the atmospheric waveguide interference or according to a detection result of the uplink cross slot interference, and then set the symbol configuration information according to the determined information. However, this is not limited in this application. In other implementations, the base station may also determine uplink symbols that can be used for uplink transmission or uplink symbols that cannot be used for uplink transmission by using other detection methods.
Illustratively, the symbol configuration information may include: and a bit domain value corresponding to each uplink symbol in a period, wherein the bit domain value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit domain value corresponding to the uplink symbol which cannot be used for uplink transmission. For example, a bit field value of 0 corresponding to one uplink symbol indicates that the uplink symbol cannot be used for uplink transmission, and a bit field value of 1 corresponding to one uplink symbol indicates that the uplink symbol can be used for uplink transmission.
Illustratively, the symbol configuration information may include N-bit information, and the N-bit information has a mapping relationship with at least one of: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, there is a mapping relationship between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission. Wherein N may be a positive integer greater than 1.
In an exemplary implementation manner, taking an LTE system as an example, a base station may send, in an LTE SIB1 and mobility control info → RadioResourceConfigCommon, new symbol configuration information that is included in the new symbol configuration information, where the former may be used for an Idle (Idle) UE to acquire symbol configuration information of an Uplink PUSCH (Physical Uplink Shared Channel), and the latter may be used for a handover UE to acquire symbol configuration information of an Uplink PUSCH of a target cell.
In this example, the symbol configuration information is carried by a PUSCH symbol configuration field (puschhsymbolconfig). In other words, the idle UE may obtain the available uplink PUSCH symbol according to the puschhsymbolconfig in SIB1, and the handover UE may obtain the available uplink PUSCH symbol of the target cell according to the puschhsymbolconfig included in MobilityControlInfo → RadioResourceConfigCommon.
Here, when the puschhsymbolconfig is configured, 10 milliseconds (ms) or 5ms may be one cycle. Illustratively, the value of the period may also be notified to the UE by adding a field in the broadcast message.
The configuration of the puschhsymbolconfig includes the following two configurations. One way is that: and setting uplink symbols in a period to sequentially correspond to a bit field respectively, wherein when the value of the bit field corresponding to the uplink symbols is 0, the uplink symbols cannot be used for uplink transmission, and when the value of the bit field corresponding to the uplink symbols is 1, the uplink symbols can be used for uplink transmission. The other mode is as follows: and adopting N bits of information to indicate how many uplink symbols can not be used for uplink transmission in a period, wherein the value of N can depend on the total number of uplink symbols in the period. As shown in table 1, there is a mapping relationship between the PUSCH phy symbol config and the total number of symbols that cannot be used for uplink transmission and the symbol set that cannot transmit the PUSCH. Wherein the total number of symbols that cannot be used for uplink transmission is equal to the sum of the number of symbols that cannot transmit PUSCH and the number of symbols configured on upptps (2 symbols in this example).
Table 1 cell level configuration of SIB1 uplink transmission symbols
In another exemplary implementation, taking LTE system as an example, the base station may notify the UE of the available uplink symbols through UE-level grant information (e.g., DCI). Here, a new bit may be added to DCI corresponding to uplink scheduling, for example, DCI0 and DCI4 of LTE, to indicate whether one or more uplink symbols can be used for uplink transmission.
Since DCI only controls uplink PUSCH transmission, and symbols of the uplink PUSCH for data transmission are 10 (extended CP) or 12 (normal CP), 10 or 12 bit fields may be configured, and a value of each bit field indicates whether a corresponding uplink symbol is available for PUSCH transmission.
Alternatively, 4-bit information (which may be carried by the PUSCH Symbol field) may be employed, and the information size may indicate how many uplink symbols on the PUSCH channel can not be used for PUSCH transmission by the UE. As shown in table 2, there is a mapping relationship between the value of the PUSCH Symbol field and the total number of symbols that cannot be used for PUSCH transmission and the Symbol set that cannot transmit PUSCH.
Table 2 uplink transmission symbol configuration of UE-level DCI
It should be noted that the communication method of the present embodiment is also applicable to the 5G communication system.
In this embodiment, a symbol adaptive configuration mode for uplink transmission is introduced at the base station side, where the adaptive configuration mode may include a UE-level real-time adjustment mode and a cell-level configuration mode, and the two adaptive configuration modes may be used separately or simultaneously.
Fig. 3 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure. In the exemplary embodiment, in LTE TDD ratio 2, when there is atmospheric waveguide interference, the base station may configure available uplink symbols for uplink transmission in a broadcast (SIB1), where a symbol period may be 5ms, and the puschsmybolconfig carried in SIB1 may indicate how many uplink symbols in a period cannot be used for uplink transmission.
As shown in fig. 3, the communication method provided in this embodiment includes the following steps:
s301, opening an atmospheric waveguide detection function by the base station;
s302, the base station starts interference measurement detection related to the atmospheric waveguide, for example, detects interference information of an uplink channel (e.g., UpPTS, uplink PUSCH, uplink SRS (Sounding Reference Signal), etc.), and determines whether an interference characteristic of the atmospheric waveguide is satisfied, where the interference characteristic may include threshold determination, association decreasing with time, and detection of continuous or full bandwidth of an interference RB (Resource Block, etc.);
s303, the base station judges whether symbol-level atmospheric waveguide interference exists, if so, the step S304 is entered, otherwise, the step S is ended;
s304, the base station determines interfered uplink symbols and symbol number under the atmospheric waveguide according to the absolute interference threshold or the relative interference threshold;
s305, determining the PUSCHSymbolConfig according to the interfered uplink symbols and the number of the symbols. In this step, the value of the puschhsymbolconfig may be determined based on table 1 according to the determined number of interfered uplink symbols and symbols. For example, it is detected that the uplink symbol #0 in the slot #0 in one period is greatly interfered and cannot be used for transmitting the PUSCH, at this time, the symbol #0 in the slot #0 and 2 symbols configured on the previous upptps cannot be used for transmitting the PUSCH, so the total number of symbols that cannot be used for PUSCH transmission is 3, and the value of the PUSCH sbymbolconfig may be determined to be 0011 based on table 1. Subsequently, after receiving the SIB1 broadcasted by the base station, the UE may learn, based on table 1, which uplink symbols cannot be used for transmitting the PUSCH according to the puschhsymbolconfig carried in the SIB 1.
Fig. 4 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure. In this exemplary embodiment, in LTE TDD configuration 3, when there is cross timeslot interference of intra-frequency networking TDD configuration 2, the base station may configure an available uplink symbol for uplink transmission in a broadcast (SIB1) manner, where a symbol period is 10ms, and the puschhsymbolconfig carried in SIB1 may indicate whether the corresponding uplink symbol in one period is available for uplink transmission.
As shown in fig. 4, the communication method provided in this embodiment includes the following steps:
s401, the base station opens an uplink interference detection function;
s402, the base station starts interference measurement, for example, detecting interference information of an uplink channel (e.g., UpPTS, uplink PUSCH, uplink SRS, etc.);
s403, the base station judges whether symbol level interference exists, if so, the S404 is entered, otherwise, the operation is finished;
s404, determining the interfered symbol condition according to the absolute interference threshold or the relative interference threshold;
s405, determining the PUSCHSYMBOL Config according to the interfered symbol condition; the TDD ratio 3 has a maximum of 38 uplink symbols (32 uplink symbols under the extended CP) within 10ms, and 38 bit fields can be adopted to sequentially (time-wise) indicate whether each uplink symbol can be used for transmission, where a bit field value corresponding to one uplink symbol is 0 to indicate that the uplink symbol cannot be used for uplink transmission, and a bit field value corresponding to one uplink symbol is 1 to indicate that the uplink symbol can be used for uplink transmission.
Fig. 5 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure. In this exemplary embodiment, under LTE TDD scheme 2, when there is atmospheric waveguide interference, the base station may use DCI to control symbols that can be used for UE-level PUSCH transmission, where a PUSCH Symbol field carried by DCI indicates how many uplink symbols can not be used for PUSCH transmission.
As shown in fig. 5, the communication method provided in this embodiment includes the following steps:
s501, opening an atmospheric waveguide detection function by a base station;
s502, the base station starts interference measurement detection related to the atmospheric waveguide, for example, detects interference information of an uplink channel (e.g., UpPTS, uplink PUSCH, uplink SRS, etc.), and determines whether the interference characteristics of the atmospheric waveguide are satisfied, where the interference measurement detection may include threshold determination, association decreasing with time, detection in which an RB is interfered continuously or in full bandwidth, and the like;
s503, the base station judges whether symbol-level atmospheric waveguide interference exists, if so, the S504 is entered, otherwise, the operation is finished;
s504, determining the sign condition of interference under the atmospheric waveguide according to the absolute interference threshold or the relative interference threshold;
s505, judging whether the UE has uplink scheduling, if so, entering S506, otherwise, ending;
s506, when the UE has uplink scheduling, the base station determines the number of interference symbols, the interference size and the like which can be overcome by the UE together according to the number of interfered symbols, the interference size on each symbol, the position information of the UE from the base station, the uplink power margin and other factors, and the demodulation performance of the base station and the like, and finally determines the symbols which can be used for PUSCH transmission. In this step, the information of the PUSCH Symbol domain carried by the DCI may be determined based on table 2 according to the determined interfered Symbol condition. For example, when it is detected that the uplink symbols #0 and #1 in the slot #0 are greatly interfered and the PUSCH cannot be transmitted in one period, it can be known from table 2 that the value of the PUSCH Symbol field is 0010. Subsequently, after receiving the DCI issued by the base station, the UE may learn, based on table 2, which uplink symbols cannot be used for transmitting the PUSCH according to the PUSCH Symbol domain carried in the DCI.
Fig. 6 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure. In this exemplary embodiment, in LTE TDD scheme 2, when there is atmospheric waveguide interference, the base station may use DCI to control symbols usable for UE-level PUSCH transmission, and use a symbol-by-bit field manner in the DCI for indication.
As shown in fig. 6, the communication method provided in this embodiment includes the following steps:
s601, opening an atmospheric waveguide detection function by the base station;
s602, the base station starts interference measurement detection related to the atmospheric waveguide, for example, detects interference information of an uplink channel (e.g., UpPTS, uplink PUSCH, uplink SRS, etc.), and determines whether the interference characteristics of the atmospheric waveguide are satisfied, where the interference measurement detection may include threshold determination, association decreasing with time, and detection in the aspects of continuous interference RB or full bandwidth;
s603, the base station judges whether symbol-level atmospheric waveguide interference exists, if so, the S604 is entered, otherwise, the operation is finished;
s604, determining the interfered symbol condition under the atmospheric waveguide according to the absolute interference threshold or the relative interference threshold;
s605, judging whether the UE has uplink scheduling, if so, entering S606, otherwise, ending;
s606, when the UE has uplink scheduling, the base station determines the number of interference symbols, the interference size and the like which can be overcome by the UE together according to the number of interfered symbols, the interference size on each symbol, the position information of the UE from the base station, the uplink power margin and other factors, and the demodulation performance of the base station and the like are integrated, and finally determines the symbols which can be used for PUSCH transmission. In this step, the bit field corresponding to the symbol where PUSCH transmission is not possible may be set to 0, and the bit field corresponding to the symbol where PUSCH transmission is possible may be set to 1.
Fig. 7 is a flowchart illustrating an example of a communication method according to an embodiment of the present disclosure. In this exemplary embodiment, in LTE TDD ratio 2, when there is atmospheric waveguide interference, the base station may jointly control the symbols that can be used for uplink transmission using the cell-level SIB1 and the UE-level DCI.
As shown in fig. 7, the communication method provided in this embodiment includes the following steps:
s701, opening an atmospheric waveguide detection function by a base station;
s702, the base station starts interference measurement detection related to the atmospheric waveguide, for example, detecting interference information of an uplink channel (e.g., UpPTS, uplink PUSCH, uplink SRS, etc.), and determining whether the interference characteristics of the atmospheric waveguide are satisfied, where the interference measurement detection may include threshold determination, association decreasing with time, and detection on interference RB continuity or full bandwidth;
s703, judging whether symbol-level atmospheric waveguide interference exists, if so, entering S704, otherwise, ending;
s704, determining the interfered symbol condition under the atmospheric waveguide according to the absolute interference threshold or the relative interference threshold;
s705, determining the PUSCHSYMBOL Config according to the interfered symbol condition; in this step, the value of the PUSCHSymbolConfig may be determined based on table 1 according to the determined interfered symbol condition;
s706, judging whether the UE has uplink scheduling, if so, entering S707, otherwise, ending;
and S707, when the UE has uplink scheduling, the base station determines the number of interference symbols, the interference magnitude and the like that the UE can overcome jointly according to the number of interfered symbols, the interference magnitude on each symbol, the position information of the UE from the base station, the uplink power margin and other factors, and the demodulation performance of the base station and the like, and finally determines the symbols which can be used for PUSCH transmission. In this step, the PUSCH Symbol domain information carried by the DCI may be determined based on table 2 according to the determined interfered Symbol condition.
Fig. 8 is a flowchart of another communication method according to an embodiment of the present application. As shown in fig. 8, the communication method provided in this embodiment includes the following steps:
s801, the UE acquires symbol configuration information;
s802, performing uplink transmission according to the symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
In an exemplary embodiment, S801 may include one of:
the UE acquires symbol configuration information from a cell-level broadcast message sent by a base station;
the UE acquires symbol configuration information from authorization information issued by a base station;
the UE determines the symbol configuration information according to the cell-level broadcast message and the authorization information sent by the base station, for example, the UE may determine that the uplink symbol available for uplink transmission is an intersection of the available uplink symbol indicated by the symbol configuration information carried by the cell-level broadcast message and the symbol configuration information carried by the authorization information.
In an exemplary embodiment, the symbol configuration information may include: a bit field value corresponding to each uplink symbol in a period, wherein the bit field value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit field value corresponding to the uplink symbol which cannot be used for uplink transmission; for example, a bit field value of 0 corresponding to one uplink symbol indicates that the uplink symbol cannot be used for uplink transmission, and a bit field value of 1 corresponding to one uplink symbol indicates that the uplink symbol can be used for uplink transmission.
In an exemplary embodiment, the symbol configuration information may include N-bit information, and the N-bit information may have a mapping relationship with at least one of: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
In an exemplary embodiment, S802 may include: and when the position of the mappable resource of the uplink data is determined to be unavailable according to the symbol configuration information, not sending the uplink data.
In this embodiment, the UE may determine a mappable resource location of uplink data according to the symbol configuration information sent by the base station, perform data mapping and send the data, and if there is no symbol that can transmit the uplink data, the UE does not transmit corresponding uplink data.
Fig. 9 is a flowchart illustrating an example of a communication method according to an embodiment of the present application. In this exemplary embodiment, under LTE TDD ratio 2, when there is symbol-level interference, the UE may determine the symbols that may be used for PUSCH transmission according to puschhsymbolconfig in SIB 1.
As shown in fig. 9, the communication method provided in this embodiment includes the following steps:
s901, judging whether the UE has uplink transmission, if so, entering S902, otherwise, ending;
and S902, determining the symbols available for PUSCH transmission according to PUSCHSYMBOLConfig in SIB 1. For example, if the value of puschhsymbolconfig in SIB1 is 0011, the UE can know, based on table 1, that the first 3 uplink symbols in a period cannot be used for PUSCH transmission, and are uplink symbol #0 in timeslot #0 and 2 uplink symbols configured on UpPTS, respectively.
Fig. 10 is a flowchart of an example of a communication method according to an embodiment of the present application. In this exemplary embodiment, under LTE TDD scheme 2, when there is Symbol level interference, the UE may determine the symbols available for PUSCH transmission from the PUSCH Symbol field in DCI.
As shown in fig. 10, the communication method provided in this embodiment includes the following steps:
s1001, judging whether uplink transmission exists in the UE, if so, entering S1002, otherwise, ending;
s1002, determining a Symbol which can be used for PUSCH transmission according to a PUSCH Symbol domain in the DCI. For example, if the value of the PUSCH Symbol field in the DCI is 0010, the UE may know, based on table 2, that the first 2 uplink symbols in a period cannot be used for PUSCH transmission, and the uplink symbols are uplink Symbol #0 and uplink Symbol # 1 in slot #0, respectively.
Fig. 11 is a flowchart illustrating an example of a communication method according to an embodiment of the present application. In this exemplary embodiment, under LTE TDD ratio 2, when there is Symbol-level interference, the UE may determine the symbols available for PUSCH transmission according to the puschhsymbolconfig in SIB1 and the PUSCH Symbol field in DCI.
As shown in fig. 11, the communication method provided in this embodiment includes the following steps:
s1101, judging whether the UE has uplink transmission, if so, entering S1102, otherwise, ending;
and S1102, determining an intersection of the PUSCHSymbolConfig in the SIB1 and an uplink transmittable Symbol represented by a PUSCH Symbol domain in the DCI, and performing PUSCH data transmission by taking the intersection as a final Symbol set which can be used for PUSCH transmission.
Fig. 12 is a flowchart illustrating an example of a communication method according to an embodiment of the present application. In this exemplary embodiment, in LTE TDD scheme 2, when there is symbol-level interference, the UE may determine a symbol available for PUSCH transmission according to puschsshbolconfig in SIB1, where puschsshbolconfig indicates that an UpPTS uplink symbol is not available, and the UE SRS configuration is sent on the UpPTS uplink symbol.
As shown in fig. 12, the communication method provided in this embodiment includes the following steps:
s1201, the UE reaches the SRS sending subframe;
s1202, according to PUSCHSYMBOLConfig in SIB1, determining whether the UpPTS symbol where the SRS is located is available, if not, entering S1203, otherwise, entering S1204.
S1203, not sending SRS;
and S1204, normally transmitting the SRS.
Fig. 13 is a flowchart illustrating an example of a communication method according to an embodiment of the present application. In the exemplary embodiment, in LTE TDD ratio 2, when there is symbol-level interference, the base station determines and issues SIB1, and updates puschsbolconfig in SIB1, where puschymbolconfig indicates that an UpPTS uplink symbol is not available, and an available symbol of the SRS configured by the base station is on UpPTS.
As shown in fig. 13, the communication method provided in this embodiment includes the following steps:
s1301, updating the PUSCHSymbolConfig by the base station;
s1302, judging whether the UpPTS uplink symbol is available; if yes (available), go to S1303, otherwise, go to S1304;
s1303, normally allocating SRS resources on UpPTS;
s1304, the SRS resource of the UE is no longer allocated on the UpPTS symbol.
Fig. 14 is a schematic diagram of a communication device according to an embodiment of the present application. As shown in fig. 14, the communication apparatus provided in this embodiment includes:
a sending module 1402, configured to send symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
Illustratively, the symbol configuration information may be carried by at least one of a cell-level broadcast message and UE-level grant information. For example, the symbol configuration information may be carried by at least one of: SIB1, MobilityControlInfo → RadioResourceConfigCommon, DCI.
Exemplarily, the communication apparatus of the present embodiment may further include:
a determining module 1401, configured to determine symbol configuration information according to the interference detection result.
Illustratively, the symbol configuration information may include: a bit field value corresponding to each uplink symbol in a period, wherein the bit field value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit field value corresponding to the uplink symbol which cannot be used for uplink transmission; for example, a bit field value of 0 corresponding to one uplink symbol indicates that the uplink symbol cannot be used for uplink transmission, and a bit field value of 1 corresponding to one uplink symbol indicates that the uplink symbol can be used for uplink transmission;
or, the symbol configuration information may include N-bit information, and a mapping relationship exists between the N-bit information and at least one of the following: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
For the related description of the communication apparatus provided in this embodiment, reference may be made to the description of the communication method at the base station side, and therefore, the description thereof is not repeated herein.
Fig. 15 is a schematic diagram of another communication device according to an embodiment of the present application. As shown in fig. 15, the communication apparatus provided in this embodiment includes:
an obtaining module 1501, configured to obtain symbol configuration information;
a processing module 1502, configured to perform uplink transmission according to the symbol configuration information;
wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
Illustratively, the obtaining module 1501 may be configured to obtain the symbol configuration information by one of:
acquiring symbol configuration information from a cell-level broadcast message sent by a base station;
obtaining symbol configuration information from authorization information issued by a base station;
and determining symbol configuration information according to the cell-level broadcast message and the authorization information sent by the base station.
Illustratively, the symbol configuration information may include: a bit field value corresponding to each uplink symbol in a period, wherein the bit field value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit field value corresponding to the uplink symbol which cannot be used for uplink transmission; for example, a bit field value of 0 corresponding to one uplink symbol indicates that the uplink symbol cannot be used for uplink transmission, and a bit field value of 1 corresponding to one uplink symbol indicates that the uplink symbol can be used for uplink transmission;
or, the symbol configuration information may include N-bit information, and a mapping relationship exists between the N-bit information and at least one of the following: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
For the related description of the communication apparatus provided in this embodiment, reference may be made to the description of the communication method on the UE side, and therefore, the description thereof is omitted here.
Fig. 16 is a schematic diagram of a base station according to an embodiment of the present application. As shown in fig. 16, the base station 1600 provided in this embodiment includes: a memory 1601, one or more processors 1602 (only one shown), and a communication program stored on the memory 1601 and operable on the processors 1602. When read and executed by the processor 1602, the communication program executes the steps of the communication method on the base station side.
The processor 1602 may include, but is not limited to, a processing device such as a Microprocessor (MCU) or a Programmable logic device (FPGA). The memory 1601 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory 1601 can further include memory remotely located from the processor 1602, which can be connected to the base station 1600 through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It will be understood by those skilled in the art that the structure shown in fig. 16 is only an illustration, and is not intended to limit the structure of the base station. For example, base station 1600 may also include more or fewer components than shown in fig. 16, or have a different configuration than shown in fig. 16.
As shown in fig. 16, the base station 1600 provided in this embodiment may further include: a transmission module 1603 for receiving or sending data via a network. In one example, the transmission module 1603 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
Fig. 17 is a schematic diagram of a UE according to an embodiment of the present application. As shown in fig. 17, the UE 1700 provided in this embodiment includes: a memory 1701, one or more processors 1702 (only one shown), and a communications program stored on the memory 1701 and executable on the processors 1702. When the communication program is read and executed by the processor 1702, the steps of the UE-side communication method described above are executed.
The processor 1702 may include, but is not limited to, a processing device such as an MCU or an FPGA. The memory 1701 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory 1701 may further include memory remotely located from the processor 1702 and which may be coupled to the UE 1700 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It will be understood by those of ordinary skill in the art that the structure shown in fig. 17 is only an illustration and is not intended to limit the structure of the UE. For example, the UE 1700 may also include more or fewer components than shown in fig. 17, or have a different configuration than shown in fig. 17.
As shown in fig. 17, the UE 1700 provided in this embodiment may further include: a transmission module 1703 for receiving or transmitting data via a network. In one example, the transmission module 1703 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In addition, an embodiment of the present application further provides a computer-readable medium, in which a communication program is stored, and the communication program, when executed by a processor, implements the steps of the communication method on the base station side.
In addition, an embodiment of the present application further provides a computer-readable medium, in which a communication program is stored, and the communication program, when executed by a processor, implements the steps of the communication method on the UE side.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as is well known to those skilled in the art.
The foregoing shows and describes the general principles and features of the present application, together with the advantages thereof. The present application is not limited to the above-described embodiments, which are described in the specification and drawings only to illustrate the principles of the application, but also to provide various changes and modifications within the spirit and scope of the application, which are within the scope of the claimed application.
Claims (19)
1. A method of communication, comprising:
the base station determines the number of interference symbols and the interference size which can be overcome by the UE together according to the interference detection result, the interference size on each symbol, the position information of the UE from the base station and the uplink power margin when the UE has uplink scheduling, and the demodulation performance of the base station, and finally determines the symbol configuration information after determining the symbol for PUSCH transmission;
the base station sends the symbol configuration information, wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
2. The method of claim 1, wherein the symbol configuration information is carried by at least one of a cell-level broadcast message and User Equipment (UE) level grant information.
3. The method of claim 2, wherein the symbol configuration information is carried by at least one of: the system message block 1, the radio resource configuration common message in the mobile control information, and the downlink control information.
4. The method according to any one of claims 1 to 3, wherein the symbol configuration information comprises: and a bit domain value corresponding to each uplink symbol in a period, wherein the bit domain value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit domain value corresponding to the uplink symbol which cannot be used for uplink transmission.
5. The method according to any one of claims 1 to 3, wherein the symbol configuration information comprises N-bit information, and a mapping relationship exists between the N-bit information and at least one of the following: the uplink symbol set which cannot be used for uplink transmission and the total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
6. A method of communication, comprising:
user Equipment (UE) acquires symbol configuration information, wherein the symbol configuration information is determined after a base station determines the number of interference symbols and the interference magnitude which can be overcome by the UE jointly according to the interference detection result, the interference magnitude on each symbol, the position information of the UE from the base station and the uplink power margin when the UE has uplink scheduling, and the demodulation performance of the base station;
and performing uplink transmission according to the symbol configuration information, wherein the symbol configuration information is used for indicating at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
7. The method of claim 6, wherein the UE obtains symbol configuration information, comprising one of:
the UE acquires the symbol configuration information from a cell-level broadcast message sent by a base station;
the UE acquires the symbol configuration information from authorization information issued by a base station;
and the UE determines the symbol configuration information according to the cell-level broadcast message and the authorization information sent by the base station.
8. The method according to claim 6 or 7, wherein the symbol configuration information comprises: and a bit domain value corresponding to each uplink symbol in a period, wherein the bit domain value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit domain value corresponding to the uplink symbol which cannot be used for uplink transmission.
9. The method according to claim 6 or 7, wherein the symbol configuration information comprises N bits of information, and a mapping relationship exists between the N bits of information and at least one of the following: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
10. The method of claim 6, wherein the performing uplink transmission according to the symbol configuration information comprises:
and when the position of the mappable resource of the uplink data is determined to be unavailable according to the symbol configuration information, not sending the uplink data.
11. A communications apparatus, comprising:
a determining module, configured to determine, according to an interference detection result, when the UE has uplink scheduling, the number of interfered symbols and the interference on each symbol, as well as the position information of the UE from the base station and the uplink power headroom, and synthesize the demodulation performance of the base station, jointly determine the number of interference symbols and the interference magnitude that the UE can overcome, and finally determine symbol configuration information after determining a symbol that can be used for PUSCH transmission;
a sending module, configured to send the symbol configuration information, where the symbol configuration information is used to indicate at least one of: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
12. The apparatus of claim 11, wherein the symbol configuration information comprises: a bit field value corresponding to each uplink symbol in a period, wherein the bit field value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit field value corresponding to the uplink symbol which cannot be used for uplink transmission;
or, the symbol configuration information includes N-bit information, and a mapping relationship exists between the N-bit information and at least one of the following information: an uplink symbol set which cannot be used for uplink transmission, a total number of symbols which cannot be used for uplink transmission, or a mapping relation exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
13. A communications apparatus, comprising:
an obtaining module, configured to obtain symbol configuration information, where the symbol configuration information is determined after a base station determines, according to an interference detection result, when a UE has uplink scheduling, the number of interfered symbols and the interference on each symbol, as well as position information and an uplink power margin of the UE from the base station, and combines demodulation performance of the base station, the number of interfered symbols and the interference that the UE can overcome are jointly determined, and finally a symbol that can be used for PUSCH transmission is determined;
a processing module, configured to perform uplink transmission according to the symbol configuration information, where the symbol configuration information is used to indicate at least one of the following: uplink symbols which cannot be used for uplink transmission and uplink symbols which can be used for uplink transmission.
14. The apparatus of claim 13, wherein the obtaining module is configured to obtain the symbol configuration information by one of:
acquiring the symbol configuration information from a cell-level broadcast message sent by a base station;
obtaining the symbol configuration information from authorization information issued by a base station;
and determining the symbol configuration information according to the cell-level broadcast message and the authorization information sent by the base station.
15. The apparatus according to claim 13 or 14, wherein the symbol configuration information comprises: a bit field value corresponding to each uplink symbol in a period, wherein the bit field value corresponding to the uplink symbol which can be used for uplink transmission is different from the bit field value corresponding to the uplink symbol which cannot be used for uplink transmission;
or, the symbol configuration information includes N-bit information, and a mapping relationship exists between the N-bit information and at least one of the following information: an uplink symbol set which cannot be used for uplink transmission and a total number of symbols which cannot be used for uplink transmission; or, a mapping relationship exists between the N-bit information and at least one of the following: a set of uplink symbols available for uplink transmission, a total number of symbols available for uplink transmission.
16. A base station, comprising: memory, a processor and a communication program stored on the memory and executable on the processor, the communication program, when executed by the processor, implementing the steps of the communication method according to any one of claims 1 to 5.
17. A User Equipment (UE), comprising: memory, a processor and a communication program stored on the memory and executable on the processor, the communication program, when executed by the processor, implementing the steps of the communication method according to any one of claims 6 to 10.
18. A computer-readable medium, in which a communication program is stored which, when being executed by a processor, carries out the steps of the communication method according to any one of claims 1 to 5.
19. A computer-readable medium, in which a communication program is stored which, when being executed by a processor, carries out the steps of the communication method according to any one of claims 6 to 10.
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| JP2020506196A JP6997858B2 (en) | 2017-08-07 | 2018-08-06 | Communication method and equipment |
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| WO2019029482A1 (en) | 2019-02-14 |
| JP2020529788A (en) | 2020-10-08 |
| CN109391570A (en) | 2019-02-26 |
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