CN112153671B - Data transmission method and related equipment - Google Patents
Data transmission method and related equipment Download PDFInfo
- Publication number
- CN112153671B CN112153671B CN201910581312.9A CN201910581312A CN112153671B CN 112153671 B CN112153671 B CN 112153671B CN 201910581312 A CN201910581312 A CN 201910581312A CN 112153671 B CN112153671 B CN 112153671B
- Authority
- CN
- China
- Prior art keywords
- base station
- relay base
- data packet
- time
- host
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 80
- 230000006854 communication Effects 0.000 claims abstract description 81
- 238000004891 communication Methods 0.000 claims abstract description 73
- 230000015654 memory Effects 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 abstract description 37
- 238000004705 quadratic configuration interaction calculation Methods 0.000 description 146
- 102100039358 3-hydroxyacyl-CoA dehydrogenase type-2 Human genes 0.000 description 35
- 101001035740 Homo sapiens 3-hydroxyacyl-CoA dehydrogenase type-2 Proteins 0.000 description 35
- 230000009286 beneficial effect Effects 0.000 description 22
- 238000013461 design Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 8
- 238000004904 shortening Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 238000011022 operating instruction Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the application discloses a data transmission method and related equipment, wherein the method can be used for communication between a relay base station and a host base station in the relay field, and comprises the following steps: under the condition that the relay base station supports the short TTI, the relay base station selects at least one data packet from the short TTI queue, and sends one first data packet in the at least one data packet to the host base station in a first time length, wherein the length of the first time length is less than 1 millisecond, a specific implementation scheme for applying the short TTI technology to communication between the host base station and the relay base station is provided, the communication time delay between the relay base station and the host base station is shortened, and the support degree of low-time delay service is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a data transmission method and related devices.
Background
With the continuous development of communication technology, higher requirements are put on coverage and network link capacity of cellular communication systems, and in order to convert a link with poor quality into a link with good quality, so as to obtain higher network link capacity and coverage, relay technology is gradually popularized.
The relay technology (relay) is a wireless relay solution, and refers to that a data packet is not directly transmitted to an opposite party between a base station and a terminal device, but a host base station (donor enodeb, deNB) transmits the data packet to a Relay Node (RN), and the data packet is forwarded to the terminal device after signal amplification or regeneration processing by the relay base station.
However, in the process of using the relay base station to communicate, a transmission delay is introduced when data is transmitted between the host base station and the relay base station, so that the data transmission rate is reduced, and therefore, a scheme for improving the data transmission rate is needed to be proposed.
Disclosure of Invention
The embodiment of the application provides a data transmission method and related equipment, which are used for providing a specific implementation scheme for applying a short TTI technology to communication between a host base station and a relay base station, shortening the communication time delay between the relay base station and the host base station and improving the support degree of low-time delay service.
In order to solve the technical problems, the embodiment of the application provides the following technical scheme:
In a first aspect, an embodiment of the present application provides a data transmission method, which may be used in a scenario where a relay base station communicates with a host base station, because there is a relay base station supporting a short transmission time interval TTI and also there is a relay base station not supporting a short TTI in at least one relay base station connected to the host base station, where, in a case where the relay base station supports a short TTI, the relay base station may acquire at least one data packet from a short TTI queue, where the at least one data packet may be sent by a terminal device through at least one radio connection bearer, and in particular, the at least one data packet may be received by the relay base station through one radio connection bearer or may be received by at least two radio connection bearers, where, in an LTE radio communication network, the radio connection bearer may be specifically represented as an evolved radio access bearer ERAB; and the relay base station may send a first data packet to the host base station in a first duration, where the first data packet is one data packet in the at least one data packet, and the length of the first duration is less than 1 millisecond. In the implementation manner, the short TTI technology is applied to the communication process between the relay base station and the host base station, the relay base station is provided with the short TTI queue under the condition that the relay base station supports the short TTI, the relay base station can acquire at least two first data packets to be sent from the short TTI queue and send the adjacent two first data packets to be sent to the host base station in a first time period, and compared with the common TTI technology adopted between the current relay base station and the host base station, the communication time delay between the relay base station and the host base station is shortened, the data transmission rate is improved, and the support degree of low-time delay service is improved.
In one possible implementation manner of the first aspect, before the relay base station transmits the first data packet to the host base station in the first time period, the method further includes: because the relay base station receives at least one data packet sent by the terminal device through at least one radio access bearer, and when the terminal device needs to transmit service data of a first service, the terminal device requests to establish the first radio access bearer from the relay base station, and in the process of establishing the radio access bearer, the policy and charging rules function entity PCRF allocates a first quality of service class identifier QCI for the first radio access bearer used by the first service, and the relay base station receives and records a first QCI corresponding to the first radio access bearer, the relay base station obtaining the first QCI corresponding to the first data packet may include: after the first data packet is acquired, determining a first radio access bearer for bearing the first data packet, and further determining a first QCI corresponding to the first radio access bearer; the relay base station judges whether the first QCI is matched with a first preset QCI set or not, and adds a first data packet into a short TTI queue under the condition that the first QCI is matched with the first preset QCI set, wherein the first preset QCI set comprises at least one QCI, different QCIs correspond to different services, and each QCI included in the first preset QCI set corresponds to a low-delay service.
In the implementation manner, the first relay base station and the host base station can store a first preset QCI set in advance, and can further judge whether the QCI corresponding to the first data packet is matched with the first preset QCI set or not under the condition that the first relay base station supports a short TTI, and only under the condition of matching, the first data packet is added into the short TTI queue, and as the QCI can reflect that the service corresponding to the data packet is the time delay requirement condition, the differentiated treatment of the low-delay service and the time delay insensitive service can be realized, so that the smoothness of the data transmission process of the low-delay service is ensured as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the first relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the first relay base station and the host base station, namely the utilization rate of time-frequency resources between the first relay base station and the host base station is provided.
In one possible implementation manner of the first aspect, the method further includes: when a backhaul link (backhaul) is established between a relay base station and a host base station, the relay base station sends identification information and capability information of the relay base station to the host base station, so that the host base station can determine that the relay base station supports a short TTI according to the capability information of the relay base station, and further the host base station can record that the identification of each relay base station corresponds to the support condition of the relay base station to the short TTI as an index, wherein the capability information is used for identifying that the relay base station supports the short TTI, and the backhaul link is a link established when the relay base station is initially accessed to the host base station. In the implementation manner, when the relay base station is initially accessed to the host base station and establishes a backhaul link with the host base station, the capability information of the relay base station is sent to the host base station, so that when the host base station is initially accessed to the host base station, whether the relay base station supports a short TTI or not can be determined according to the capability information, and the host base station can manage the relay base station in time according to the capability of the relay base station, thereby being beneficial to shortening the transmission delay of the relay base station and the host base station in time, providing a low-delay data transmission channel for users as early as possible, and enhancing the user viscosity.
In one possible implementation manner of the first aspect, the relay base station sends the first data packet to the host base station in a first time period, including: after determining that the relay base station supports the short TTI, the host base station may determine a first time-frequency resource set in advance by using a negotiation manner between the relay base station and the host base station, where the first time-frequency resource set may include a plurality of resource blocks, where the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission by using the relay base station in the short TTI, where positions of time-frequency resource sets allocated to different relay base stations on a frequency domain may be the same or different; the relay base station may send the first data packet to the host base station in a first time period through a first time-frequency resource after obtaining the first data packet from the short TTI queue, where the first time-frequency resource is assigned to the first time-frequency resource set. In the implementation manner, the host base station and the first relay base station can reserve time-frequency resources for the data transmission of the first relay base station in a short TTI manner, so that when the first relay base station performs the data transmission operation in the short TTI manner, the steps of sending a resource scheduling request to the host base station by the first relay base station, dividing the time-frequency resources by the host base station and the like are saved, the time delay of the data transmission between the first relay base station and the host base station is further saved, and the support degree of low-time-delay service is further improved.
In one possible implementation manner of the first aspect, the relay base station may further receive, through a second time-frequency resource, a second data packet sent by the host base station, where a receiving duration of the second data packet is a first duration, specifically, the relay base station may monitor, on the second time-frequency resource, the second data packet sent by the host base station, and more specifically, the relay base station may monitor, on the second time-frequency resource, whether there is at least one data packet sent by the host base station, and may also perform a monitoring operation every third duration, where an execution duration of the monitoring operation is the first duration. In the implementation manner, not only is an implementation scheme provided for how the relay base station utilizes the short TTI technology to transmit data in the uplink direction, but also an implementation scheme is provided for how the relay base station utilizes the short TTI technology to receive data in the downlink direction, so that the implementation scene of the scheme is expanded, and the comprehensiveness of the scheme is improved.
In one possible implementation manner of the first aspect, the first time length is 2 symbols or 3 symbols in length in the time domain. In the implementation manner, the specific duration of the first duration is provided, the executable performance of the scheme is improved, the length of the first duration is shortened from less than 1 millisecond to 2 symbols or 3 symbols, the communication time delay between the first relay base station and the host base station is further shortened, and the support degree of low-time delay service is improved.
In a second aspect, the embodiment of the present application further provides another data transmission method, which may be used in a scenario where a host base station communicates with a relay base station, where, because data transmission is performed on the relay base station, the host base station, and a terminal device by using one radio access bearer for one service, the host base station may receive, by using at least one radio access bearer, at least one data packet sent by a core network device, where in an LTE wireless communication network, the radio connection bearer may be embodied as an evolved radio access bearer ERAB; the host base station can determine a relay base station corresponding to a second data packet because the data packet carries identification information of a receiver, wherein the second data packet is one data packet in at least one data packet; and the host base station can further judge whether the relay base station supports the short Transmission Time Interval (TTI), and under the condition that the relay base station supports the short TTI, the host base station sends a second data packet to the relay base station in a first time length, and the length of the first time length is less than 1 millisecond.
In this implementation manner, the short TTI technology is applied to a communication process between the first relay base station and the host base station, after the host base station receives at least one data packet sent by the core network device, the host base station may determine the relay base station corresponding to the second data packet, and in the case that the relay base station supports the short TTI, the host base station sends two adjacent first data packets to be sent to the host base station within a first time period, and because the length of the first time period is less than 1 ms, compared with the conventional TTI technology adopted between the current first relay base station and the host base station, the communication delay between the first relay base station and the host base station is shortened, which is favorable for improving the data transmission rate and improving the support degree for low-latency services.
In one possible implementation manner of the second aspect, before the host base station sends the second data packet to the relay base station in the first time period, the method further includes: when the host base station determines that the second relay base station supports the short TTI, the host base station acquires a second quality of service class identifier QCI corresponding to the second data packet, and specifically, because the host base station receives at least one data packet sent by the core network device through at least one radio access bearer, the host base station can acquire the second radio access bearer for bearing the second data packet, and further can acquire a second QCI corresponding to the second radio access bearer according to a correspondence between the radio access bearer stored in the host base station and the QCI; the host base station can judge whether the second QCI is matched with a first preset QCI set, and adds a second data packet into a short TTI queue under the condition that the second QCI is matched with the first preset QCI set, wherein the first preset QCI set comprises at least one QCI, different QCIs correspond to different services, and each QCI included in the first preset QCI set corresponds to a low-delay service; the host base station sending the second data packet to the relay base station in the first time period may specifically include: the host base station acquires a second data packet from the short TTI queue, and transmits the second data packet to the relay base station in the first time period.
In this implementation manner, the host base station may store a first preset QCI set in advance, and in the case that the first relay base station supports a short TTI, the host base station may further determine whether the QCI corresponding to the second data packet is matched with the first preset QCI set, and only if so, the second data packet is added into the short TTI queue, and because the QCI may reflect that the service corresponding to the data packet is a time delay requirement, it is possible to implement differentiated treatment on a low-delay service and a time delay insensitive service, so as to ensure smoothness of a data transmission process of the low-delay service as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the second relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the second relay base station and the host base station, namely the utilization rate of time-frequency resources between the second relay base station and the host base station is provided.
In one possible implementation manner of the second aspect, the method further includes: when the host base station establishes a return link with the relay base station, the host base station receives the capability information of the relay base station sent by the relay base station; the host base station determines that the relay base station supports the short TTI according to the capability information of the relay base station, specifically, in one case, the host base station can determine whether the relay base station supports the short TTI according to the capability information of each relay base station when obtaining the capability information of at least one relay base station, and further store the support information of each relay base station for the short TTI, and when the host base station needs to determine whether the second relay base station supports the short TTI, the host base station determines whether the second relay base station supports the short TTI according to the pre-stored support information of the at least one relay base station for the short TTI, where the second relay base station is any one of the at least one relay base stations accessing the host base station; in another case, the host base station may obtain and store capability information of at least one relay base station, and when the host base station needs to determine whether the second relay base station supports the short TTI, the host base station may acquire capability information of the second relay base station from the capability information of the at least one relay base station, and further determine whether the second relay base station supports the short TTI according to the capability information of the second relay base station.
In the implementation manner, when the relay base station is initially accessed to the host base station and establishes a backhaul link with the host base station, the host base station can receive capability information sent by the relay base station, so that when the host base station is initially accessed to the host base station, whether the relay base station supports a short TTI can be determined according to the capability information, and the host base station can manage the relay base station timely according to the capability of the relay base station, thereby being beneficial to timely shortening transmission delay of the relay base station and the host base station, providing a low-delay data transmission channel for users as early as possible, and enhancing user viscosity.
In one possible implementation manner of the second aspect, the host base station sends the second data packet to the relay base station in the first time period, including: after determining that the relay base station supports the short TTI, the host base station may determine a first time-frequency resource set in advance by using a negotiation manner between the relay base station and the host base station, where the first time-frequency resource set may include a plurality of resource blocks, where the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission by using the relay base station in the short TTI, where positions of time-frequency resource sets allocated to different relay base stations on a frequency domain may be the same or different; the host base station may send the second data packet to the relay base station in the first time period through the second time-frequency resource after obtaining the second data packet from the short TTI queue, where the first time-frequency resource is assigned to the first set of time-frequency resources. In the implementation manner, time-frequency resources can be reserved between the host base station and the second relay base station for data transmission of the second relay base station in a short TTI mode, so that when the host base station executes data transmission operation in the short TTI mode, the step that the host base station informs the relay base station that the second data packet is about to be transmitted through the second time-frequency resources is saved, the time delay of data transmission between the second relay base station and the host base station is further saved, and the support degree of low-time-delay service is further improved.
In one possible implementation manner of the second aspect, the method further includes: the host base station receives a first data packet sent by the relay base station through a first time-frequency resource, wherein the receiving duration of the first data packet is a first duration, specifically, the host base station can monitor a second data packet sent by the relay base station on the first time-frequency resource, more specifically, the host base station can monitor whether at least one data packet sent by the relay base station exists on the first time-frequency resource all the time, and can also execute monitoring operation every fourth time, and the execution duration of the monitoring operation is the first duration. In the implementation manner, not only is an implementation scheme provided for how the host base station utilizes the short TTI technology to transmit data in the downlink direction, but also an implementation scheme is provided for how the host base station utilizes the short TTI technology to receive data in the uplink direction, so that the implementation scene of the scheme is expanded, and the comprehensiveness of the scheme is improved.
In one possible implementation manner of the second aspect, the first time length is 2 symbols or 3 symbols in length in the time domain.
In a third aspect, an embodiment of the present application further provides a relay base station, where the relay base station includes: the system comprises an acquisition unit and a sending unit, wherein the acquisition unit is used for acquiring at least one data packet from a short Transmission Time Interval (TTI) queue under the condition that a relay base station supports the TTI; and the sending unit is used for sending a first data packet to the host base station in a first time length, wherein the first data packet is one data packet in at least one data packet, and the length of the first time length is less than 1 millisecond. In the implementation manner, the short TTI technology is applied to the communication process between the relay base station and the host base station, under the condition that the relay base station supports the short TTI, the short TTI queue is arranged on the relay base station, the acquisition unit can acquire at least two first data packets to be transmitted from the short TTI queue, and the transmission unit transmits two adjacent first data packets to be transmitted to the host base station in a first time length, and compared with the common TTI technology adopted between the relay base station and the host base station at present, the communication time delay between the relay base station and the host base station is shortened, the data transmission rate is improved, and the support degree of low-delay service is improved.
For the constituent modules of the relay base station provided in the third aspect of the present application, the steps performed by the relay base station in the various possible implementation manners of the first aspect may be further performed, and the various possible implementation manners of the third aspect and the beneficial effects caused by each implementation manner may refer to descriptions in the various possible implementation manners of the first aspect, which are not described in detail herein.
In a fourth aspect, an embodiment of the present application further provides a host base station, where the host base station includes a receiving unit, a determining unit, and a sending unit, where the receiving unit is configured to receive at least one data packet sent by a core network device; a determining unit, configured to determine a relay base station corresponding to a second data packet, where the second data packet is one data packet in the at least one data packet; and the sending unit is used for sending the second data packet to the relay base station in a first time length under the condition that the relay base station supports a short Transmission Time Interval (TTI), and the length of the first time length is less than 1 millisecond. In the implementation manner, the short TTI technology is applied to the communication process between the first relay base station and the host base station, after the receiving unit receives at least one data packet sent by the core network device, the determining unit may determine the relay base station corresponding to the second data packet, and under the condition that the relay base station supports the short TTI, the sending unit sends two adjacent first data packets to be sent to the host base station within a first time period, and because the length of the first time period is less than 1 millisecond, compared with the conventional TTI technology adopted between the first relay base station and the host base station, the communication delay between the first relay base station and the host base station is shortened, which is favorable for improving the data transmission rate and improving the support degree of low-delay service.
For the constituent modules of the host base station provided in the fourth aspect of the present application, the steps performed by the host base station in the various possible implementation manners of the second aspect may also be performed, and the various possible implementation manners of the fourth aspect and the beneficial effects caused by each implementation manner may refer to descriptions in the various possible implementation manners of the second aspect, which are not described in detail herein.
In a fifth aspect, an embodiment of the present application further provides a relay base station, which may include a memory, a processor, and a bus system, where the memory is configured to store a program, and the processor is configured to execute the program in the memory, and includes the following steps: under the condition that the relay base station supports a short Transmission Time Interval (TTI), at least one data packet is acquired from a short TTI queue; transmitting a first data packet to the host base station in a first time period, wherein the first data packet is one data packet in at least one data packet, and the length of the first time period is less than 1 millisecond; the bus system is used to connect the memory and the processor to communicate the memory and the processor.
In the fifth aspect of the present application, the processor may also be configured to perform the steps performed by the relay base station in each possible implementation manner of the first aspect, and the specific details may refer to the first aspect, which is not repeated herein.
In a sixth aspect, an embodiment of the present application further provides a host base station, which may include a memory, a processor, and a bus system, where the memory is configured to store a program, and the processor is configured to execute the program in the memory, and includes the following steps: receiving at least one data packet sent by core network equipment; determining a relay base station corresponding to a second data packet, wherein the second data packet is one data packet in at least one data packet; under the condition that the relay base station supports a short Transmission Time Interval (TTI), sending a second data packet to the relay base station in a first time length, wherein the length of the first time length is less than 1 millisecond; the bus system is used to connect the memory and the processor to communicate the memory and the processor.
In the sixth aspect of the present application, the processor may also be configured to perform the steps performed by the host base station in each possible implementation manner of the second aspect, and the specific reference may be made to the first aspect, which is not repeated here.
In a seventh aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, which when run on a computer causes the computer to perform the method of the first or second aspect described above.
In an eighth aspect, embodiments of the present application provide a computer program which, when run on a computer, causes the computer to perform the method of the first or second aspect described above.
In a ninth aspect, the present application provides a chip system comprising a processor for supporting a relay base station or a host base station to perform the functions involved in the above aspects, e.g. to transmit or process data and/or information involved in the above methods. In one possible design, the system-on-chip further includes a memory for holding program instructions and data necessary for the relay base station or the host base station. The chip system can be composed of chips, and can also comprise chips and other discrete devices.
Drawings
Fig. 1 is a network architecture diagram of a data transmission system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a data transmission method according to an embodiment of the present application;
Fig. 3 is a schematic diagram of a relationship between time-frequency resources included in a first time-frequency resource set and a second time-frequency resource set according to an embodiment of the present application;
fig. 4 is a schematic flow chart of another data transmission method according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a relay base station according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a host base station according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a data transmission method and related equipment, which are used for providing a specific implementation scheme for applying a short TTI technology to communication between a host base station and a relay base station, shortening the communication time delay between the relay base station and the host base station and improving the support degree of low-time delay service.
Embodiments of the present application are described below with reference to the accompanying drawings.
The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely illustrative of the manner in which embodiments of the application have been described in connection with the description of the objects having the same attributes. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that the data transmission method provided by the application can be applied to relay scenarios in various communication systems, for example, when a base station provides wireless communication signals for urban areas, a host base station is used to provide wireless communication signals for crowd-dense areas in the urban areas, and the crowd-sparse areas in the urban areas are inevitably covered with wireless communication signals, so that in order to improve the coverage rate of the wireless communication signals, the relay base station can be used to amplify or regenerate the wireless communication signals sent by the host base station and then forward the signals, thereby improving the coverage rate of the wireless communication signals and guaranteeing the communication quality of the wireless communication signals on the premise of saving the cost as much as possible; as another example, for example, when a base station provides wireless communication signals for towns or scenic spots, a host base station may be utilized to provide wireless communication signals for densely populated areas in towns and relay base stations may be utilized to provide wireless communication signals for densely populated villages or scenic spots; as yet another example, when the base station provides the wireless communication signal for the mobile expressway, the host base station and the relay base station may be disposed along the mobile expressway in a crossing manner, so that the wireless communication signal is provided by the host base station on a part of the lines, the wireless communication signal is provided by the relay base station on a part of the lines, and so on, which will not be illustrated in detail herein.
The present application can be applied to a host base station and a relay base station in various communication systems including a global system for mobile communications (Global System for Mobile Communications, GSM), a code division multiple access (Code Division Multiple Access, CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, a general packet radio service (GENERAL PACKET radio service, GPRS) system, a long term evolution (Long Term Evolution, LTE) system, a frequency division duplex long term evolution (frequency division duplex LTE, LTE-FDD) system, a time division duplex long term evolution (time division duplex LTE, LTE-TDD) system, a universal mobile communication system (Universal Mobile Telecommunications System, UMTS), other wireless communication systems employing orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) technology, a fifth generation (5th generation,5G) communication system under development, and any applicable future communication system.
Specifically, referring to fig. 1, fig. 1 is a network architecture diagram of a data transmission system provided in an embodiment of the present application, where the data transmission system includes a host base station 100, a relay base station 200, a first terminal device 300 and a second terminal device 400, where the host base station 100 is a base station that adds support of related functions of a relay technology, and is used to support access of the second terminal device 400, and performs data communication with the second terminal device 400, so as to provide wireless communication signals for the second terminal device 400; and also for supporting access by the relay base station 200 to provide a backhaul link for the relay base station 200. The relay base station 200 may be logically divided into a remote relay node (relay remote node, RRN) and a backhaul base station (relay eNodeB, reNB), where the RRN is used to support a part of functions of the terminal device and related functions of the relay technology, and the RRN is used to support access of the first terminal device 300, so as to provide a wireless communication signal for the first terminal device 300; the ReNB is configured to support functions of a general base station and related functions of a relay technology, and is configured to establish a bearer with the home base station 100 to implement data communication between the relay base station 200 and the home base station 100.
It should be understood that, although one home base station 100, one relay base station 200, one first terminal device 300, and one second terminal device 400 are illustrated in fig. 1, one home base station 100 may correspond to a plurality of relay base stations 200, one home base station 100 may correspond to a first terminal device 300, one relay base station 200 may correspond to a plurality of second terminal devices 400, and the number of specific home base stations 100, relay base stations 200, first terminal devices 300, and second terminal devices 400 may be determined in connection with an actual application scenario, which is not limited herein.
In combination with the above description, the embodiment of the present application provides a data transmission method, which is applied to a scenario of communication between a host base station and a relay base station, and since there are two scenarios of downlink direction and uplink direction between the host base station and the relay base station, the data processing flows in the two scenarios are different, and the two application scenarios of downlink direction and uplink direction are respectively exemplified below.
1. Relay base station and host base station communicate in the uplink direction
Referring to fig. 2, fig. 2 is an interaction diagram of a host base station and a relay base station according to an embodiment of the present application, and an embodiment of a data transmission method according to an embodiment of the present application may include:
201. and when the at least one relay base station establishes a backhaul link with the host base station, the at least one relay base station transmits capability information of the relay base station to the host base station.
In the embodiment of the present application, when each relay base station initially accesses to the host base station, communication negotiation may be performed between the relay base station and the host base station, so as to establish a backhaul link (backhaul) of a wireless communication manner between the relay base station and the host base station, and since there is a relay base station supporting a short Transmission Time Interval (TTI) and also there is a relay base station not supporting a short TTI in the relay base station accessing to the host base station, during the process of establishing the backhaul link between each relay base station and the host base station, the host base station may receive identification information and capability information of the relay base station, where the capability information of the relay base station is used to identify that the relay base station supports the short TTI.
Specifically, the identification information of the relay base station may be an internet protocol address (internet protocol address, IP) of the relay base station, a media access control address (MAC) of the relay base station, or identification information configured by the host base station for each accessed relay base station, which is not limited herein. The relay base station and the host base station may respectively identify whether the relay base station supports the short TTI by using two different states of the same field, for example, whether the relay base station supports the short TTI is transferred by using a capability field of both the relay base station and the host base station, and when the information in the field is "on", the relay base station supports the short TTI; when the information in the foregoing field is "off", it is representative that the relay base station does not support a short TTI, and it should be understood that the foregoing examples are merely for convenience of understanding the present solution, and are not intended to limit the present solution.
202. The host base station determines whether the first relay base station supports the short Transmission Time Interval (TTI) according to the capability information of the first relay base station.
In this embodiment, after receiving the capability information of at least one relay base station, the home base station may determine whether the relay base station supports a short TTI according to the capability of a first relay base station, where the first relay base station is any one of the at least one relay base stations connected to the home base station. Further, since one host base station can communicate with one plurality of relay base stations, if the host base station communicates with the plurality of relay base stations, the host base station can record whether the plurality of relay base stations support the short TTI, specifically, the host base station can use the identifier of each relay base station as an index, and the identifier of each relay base station corresponds to the support condition of the relay base station on the short TTI; more specifically, the host base station may be stored by an index, array, table, or other means, and herein, the storage in the host base station in the form of a table is exemplified, as described in table 1 below.
TABLE 1
| Relay base station identification | Whether or not to support short TTI |
| 0000001 | Support for |
| 0000002 | Not support |
| 0000003 | Support for |
Referring to table 1, in table 1, a communication between a host base station and three relay base stations is illustrated, where the identifier of the first relay base station is 0000001, and the first base station supports a short TTI; the second relay base station is marked with 0000002, and the second relay base station does not support short TTI; the third relay base station is identified as 0000003 and supports a short TTI, it should be understood that the example in table 1 is only used to facilitate understanding of the present scheme and is not intended to limit the present scheme.
In the embodiment of the application, when the relay base station is initially accessed to the host base station and establishes a backhaul link with the host base station, the capability information of the relay base station is sent to the host base station, so that when the host base station is initially accessed to the host base station, whether the relay base station supports a short TTI or not can be determined according to the capability information, and the host base station can manage the relay base station according to the capability of the relay base station in time, thereby being beneficial to shortening the transmission delay of the relay base station and the host base station in time, providing a low-delay data transmission channel for users as early as possible and enhancing the user viscosity.
203. The first relay base station receives at least one data packet sent by the terminal equipment.
In some embodiments of the present application, since data transmission is performed on a relay base station, a host base station and a terminal device through one radio access bearer for one service, the first relay base station may receive at least one data packet sent by the terminal device through at least one radio access bearer, where in a long term evolution (long term evolution, LTE) wireless communication network, the radio access bearer may be represented as an evolved radio access bearer (evolved radio access bearer, ERAB), which may be hereinafter referred to as "ERAB bearer" for short; in other types of communication networks, the radio access bearer may take other forms, and embodiments of the present application are described with respect to the radio access bearer being merely a ERAB bearer.
Specifically, in the case that the at least one data packet includes at least two data packets, if the at least two data packets correspond to different services, the terminal device needs to send the at least two data packets through at least two different ERAB bearers, and different ERAB bearers respectively correspond to different radio access bearer identifiers, that is, there is a one-to-one correspondence between the ERAB bearer identifiers and the services.
204. And under the condition that the first relay base station supports the short TTI, the first relay base station acquires a first quality of service class identifier QCI corresponding to the first data packet.
In some embodiments of the present application, in a case where the first relay base station supports the short TTI, the first relay base station may acquire a first quality of service class identifier (quality of service classification identification, QCI) corresponding to a first data packet, where the first data packet is a generic term, and refers to any one of at least one data packet sent by a terminal device received by the first relay base station. Specifically, in the case that the first relay base station receives at least one data packet through one ERAB bearer, the first relay base station may acquire a first QCI corresponding to any one of the at least one data packet; under the condition that the first relay base station receives at least two data packets through at least two ERAB bearers, the first relay base station can respectively acquire the first data packets corresponding to each ERAB bearer, and further acquire the first QCI corresponding to each first data packet.
More specifically, when the first service on the terminal device needs to transmit service data, the terminal device requests to establish the first ERAB bearer to the first relay base station, and then in the process of establishing the first ERAB bearer, the terminal device reports service parameters associated with the first service, for example, a requirement of the first service on a delay, a server to which the first service needs to access, an amount of data to be transmitted by the first service, and the like, and then a Policy and Charging Rules Function (PCRF) allocates a first QCI for a first ERAB bearer used by the first service and transmits the first QCI to the first relay base station step by step, then in the process of establishing the first ERAB bearer of the first service, the first relay base station stores the first QCI corresponding to the first ERAB bearer, and when the first relay base station receives the first data packet, the first ERAB bearer for transmitting the first data packet can be determined, and further, the corresponding first data packet to the first data packet can be determined according to the corresponding relation between the first ERAB bearer stored in the first relay base station and the first QCI.
205. The first relay base station determines whether the first QCI is matched with the first preset QCI set, and if so, proceeds to step 206; if not, step 210 is entered.
In some embodiments of the present application, the first relay base station may store a first preset QCI set in advance, so that after the first relay base station obtains the first QCI, the first relay base station may determine whether the first QCI exists in the first preset QCI set, and if the first QCI exists in the first preset QCI set, consider that the first QCI is matched with the first preset QCI set; and if the first QCI does not exist in the first preset QCI set, the first QCI is not matched with the first preset QCI set. The first preset QCI set includes at least one QCI, different QCIs correspond to different services, each QCI included in the first preset QCI set corresponds to a low-latency service, and as an example, the value of the QCI included in the first preset QCI set may include 1,2, 3 or other values, etc., which are not limited herein, and further, the first preset QCI set may also include information such as a service type corresponding to each QCI, a service priority corresponding to each QCI, a requirement of the service corresponding to each QCI for latency, etc., which are not limited herein.
Specifically, the first preset QCI set stored in the first relay base station may be sent by a PCRF in the core network device, further, the PCRF may also add a new QCI to the first preset QCI set according to an actual situation, or delete an old QCI, and send the modified first preset QCI set to the first relay base station, so as to update the first preset QCI set stored in the first relay base station, for example, with development of a communication technology, a new type of service appears in the communication network, and the new type of service is a low-latency service, and then the PCRF may add the new low-latency service to the first preset QCI set, and send the first preset QCI set after performing the adding operation to the first relay base station. In the embodiment of the application, the QCI included in the first preset QCI set can be changed according to the development of the communication technology, and when a new low-delay service appears, the first preset QCI set can be timely modified, so that the communication delay of the low-delay service is shortened, the communication quality of the low-delay service is ensured, and the backward compatibility of the scheme is also ensured.
The first relay base station may store the first preset QCI set in the form of a table, an array, an index, a link, etc. after receiving the first preset QCI set, and the first relay base station will be described with reference to table 2 by taking the table storage as an example.
TABLE 2
| QCI value | Service type |
| 1 | Traditional voice call |
| 2 | Traditional video (i.e. real-time streaming media) |
| 3 | Real-time game |
| 65 | User-defined important tasks |
Referring to table 2, in table 2, the first preset QCI set includes four QCIs, and the first preset QCI set includes a value of a QCI and a service type corresponding to the QCI as examples, where the value of the QCI in the first row is 1, and the service type corresponding to the QCI is a traditional voice call; the QCI in the second row has a value of 2, and the service type corresponding to the QCI is a traditional video (namely real-time streaming media); the QCI in the third row has a value of 3, and the service type corresponding to the QCI is real-time game; the QCI in the fourth row has a value of 65, and the service type corresponding to the QCI is a user-defined important task, which should be understood that the examples in table 2 are only for facilitating understanding of the present solution, and are not limited to the present solution.
More specifically, in the case that the first QCI obtained by the first relay base station includes at least two QCIs, the first relay base station may determine whether each QCI matches the first preset QCI set one by one.
206. The first relay base station adds the first data packet to the first short TTI queue.
In some embodiments of the present application, each data packet corresponds to one ERAB bearer, and each ERAB bearer may correspond to a plurality of data packets, that is, the correspondence between the data packets and the ERAB bearer is a many-to-one relationship; each ERAB bearer corresponds to one TTI queue, and each TTI queue corresponds to one ERAB bearer, that is, the correspondence between ERAB bearers and TTI queues is a one-to-one correspondence. Under the condition that the first relay base station determines that the first QCI is matched with the first QCI set, a first short TTI queue corresponding to the first ERAB bearer can be established on the first relay base station, then the first short TTI queue corresponding to the first data packet can be determined according to the corresponding relation between the first ERAB bearer and the first short TTI queue, the first relay base station can also convert the first data packet in the application layer form into the first data packet in the physical layer form, and the converted first data packet is added into the first short TTI queue. Specifically, the TTI queues in the embodiments of the present application all arrange a plurality of data packets in a manner from the head of the queue to the tail of the queue, where the TTI queues may specifically be represented as a linked list, and the first relay base station adds the first input packet to the first short TTI queue by adding the first data packet to the linked list corresponding to the first short TTI queue.
Specifically, if at least one data packet received by the first relay base station corresponds to the same first ERAB bearer, the first relay base station adds each first data packet in the at least one data packet into the same first short TTI queue one by one; if the plurality of data packets in the at least one data packet received by the first relay base station correspond to at least two different first ERAB bearers, the first relay base station needs to determine a first short TTI queue corresponding to each first data packet, and add each first data packet to the corresponding first short TTI queue respectively.
207. The first relay base station acquires at least one data packet from the first short TTI queue.
In some embodiments of the present application, when the first relay base station acquires at least one data packet, the first relay base station also acquires the at least one data packet one by one from the head of the first short TTI queue to the tail of the first short TTI queue, so that the first data packet may be sent one by one from the head of the first short TTI queue to the tail of the first short TTI queue.
208. The first relay base station transmits a first data packet to the host base station in a first time period through a first time-frequency resource.
In some embodiments of the present application, after the first relay base station needs to acquire the first data packet, the first relay base station may send the first data packet to the host base station in a first time period through the first time-frequency resource, that is, the duration of the first relay base station performing the sending operation of one data packet is less than or equal to the first time period. The first time-frequency resource may include a plurality of Resource Blocks (RBs), where the first time-frequency resource belongs to a first time-frequency resource set, where the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission by the first relay base station in a short TTI manner; the length of the first duration is less than 1 millisecond, and optionally, the length of the first duration in the time domain is 2 symbols or 3 symbols.
Specifically, after determining that the first relay base station supports the short TTI, the host base station may determine, in advance, a first time-frequency resource set by using a negotiation manner, where the first time-frequency resource set may include multiple RBs; optionally, the positions of the first time-frequency resource sets divided by each relay base station on the frequency domain may be the same or different; further, since the host base station may pre-allocate a fixed third time-frequency resource set for the first relay base station, so as to implement communication between the host base station and the first relay base station, the first time-frequency resource set belongs to the third time-frequency resource set, for example, the host base station allocates, for the first relay base station, a third time-frequency resource set that occupies 880MHz to 900MHz in the frequency domain, and the first time-frequency resource set may occupy 880MHz to 882MHz in the frequency domain, which is only for convenience of understanding the present scheme and is not limited to the present scheme.
More specifically, when the first relay base station transmits the first data packet, the first relay base station may perform the transmission operation of the first data packet directly through the first time-frequency resource after acquiring the first data packet; the first relay base station and the host base station may negotiate the transmission rule of the first data packet in advance, for example, the first data packet is transmitted once every third duration, where the duration of the transmission operation of the first data packet is the first duration, and after the first relay base station acquires the first data packet, the first relay base station needs to wait for a transmission period of the first data packet, and then execute the transmission operation of the first data packet, where the third duration may be 5 ms, 3 ms, 1 ms, or other lengths, etc., and it should be understood that the foregoing examples are only for facilitating understanding the present scheme, and are not limited to the present scheme.
209. The host base station receives a first data packet sent by the first relay base station through a first time-frequency resource, wherein the receiving duration of the first data packet is a first duration.
Correspondingly, under the condition that the first relay base station supports the short TTI, the host base station can receive at least one data packet sent by the first relay base station through the first time-frequency resource, wherein the receiving duration of the host base station for the first data packet is a first duration. Specifically, the host base station may monitor, on the first set of time-frequency resources, whether there is a first data packet sent by the first relay base station. More specifically, the host base station may monitor whether the first data packet is sent on the first time-frequency resource set all the time; the sending period may be negotiated with the first relay base station in advance, and the monitoring operation of the first duration may be performed once every third duration, which is not limited herein.
In the embodiment of the application, the first relay base station and the host base station can pre-store the first preset QCI set, and can further judge whether the QCI corresponding to the first data packet is matched with the first preset QCI set or not under the condition that the first relay base station supports short TTI, and the first data packet is added into the short TTI queue only under the condition of matching, and as the QCI can reflect that the service corresponding to the data packet is the requirement condition of time delay, the differentiated treatment of the low-time delay service and the service insensitive to time delay can be realized, so that the smoothness of the data transmission process of the low-time delay service is ensured as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the first relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the first relay base station and the host base station, namely the utilization rate of time-frequency resources between the first relay base station and the host base station is provided.
In the embodiment of the application, the host base station and the first relay base station can reserve time-frequency resources for the data transmission of the first relay base station in a short TTI mode, so that when the first relay base station executes data transmission operation in the short TTI mode, the steps of sending a resource scheduling request to the host base station by the first relay base station, dividing the time-frequency resources by the host base station and the like are saved, the time delay of the data transmission between the first relay base station and the host base station is further saved, and the support degree of low-time-delay service is further improved.
210. The first relay base station adds the first data packet to the first normal TTI queue.
In the embodiment of the present application, step 210 is similar to step 206, except that the execution condition of step 206 is that the first relay base station supports the short TTI technology, the execution condition of step 210 is that the first relay base station does not support the short TTI technology, and the first relay base station in step 206 establishes a short TTI queue, and the first relay base station in step 210 establishes a normal TTI queue; the common TTI queue and the short TTI queue are the same, and can be expressed in a linked list mode, but the first relay base station can allocate different queue identifications for the short TTI queue and the common TTI queue respectively so as to distinguish the two types of queues.
211. The first relay base station acquires at least one data packet from the first common TTI queue.
In the embodiment of the present application, step 211 is similar to step 207, except that in step 207, the data packet is acquired from the short TTI queue, and in step 211, the data packet is acquired from the normal TTI queue.
212. And the first relay base station transmits the first data packet to the host base station in the second time duration through the third time-frequency resource.
In some embodiments of the present application, the first relay base station transmits the first data packet to the host base station in the second duration through the third time-frequency resource. Wherein, the third time-frequency resource can include a plurality of RBs, and the third time-frequency resource can be attributed to the second time-frequency resource set; the second time period has a length in the time domain greater than the first time period, and the length of the second time period may be represented by 1 ms, 2 ms, or other values, etc.
In one case, in order to enter step 210 through step 202, the time-frequency resources included in the second time-frequency resource set and the third time-frequency resource set may be identical, that is, all time-frequency resources allocated by the host base station to the first relay base station are used for data transmission in a normal TTI manner.
In another case, referring to step 210 entered through step 205, fig. 3 is a schematic diagram of fig. 3, where fig. 3 shows a relationship between a first time-frequency resource set and a second time-frequency resource set in the data transmission method according to the embodiment of the present application, and fig. 3 includes two schematic diagrams (a) and (b), referring to fig. 3, the second time-frequency resource set may be two time-frequency resource sets that have no intersection with the first time-frequency resource set; with continued reference to fig. 3 (b), some time-frequency resources in the second time-frequency resource set intersect with some time-frequency resources in the first time-frequency resource set, that is, some time-frequency resources in the first time-frequency resource set are only used for data transmission in a short TTI manner, some time-frequency resources can be used for data transmission in a short TTI manner, or can be used for data transmission in a normal TTI manner, and all time-frequency resources in the second time-frequency resource set can be used for data transmission in a short TTI manner, or can be used for data transmission in a normal TTI manner. Optionally, time-frequency resources in the intersection of the first time-frequency resource set and the second time-frequency resource set are preferentially used for data transmission in a short TTI manner.
Specifically, before the first relay base station sends the first data packet through the third time-frequency resource, the first relay base station needs to negotiate with the host base station to determine the third time-frequency resource from the second time-frequency resource set by the host base station and allocate the third time-frequency resource to the first relay base station, and then the first relay base station sends the first data packet to the host base station through the third time-frequency resource.
213. And the host base station receives the first data packet sent by the first relay base station through the third time-frequency resource, wherein the receiving duration of the first data packet is the second duration.
Correspondingly, after the third time-frequency resource is allocated to the first relay base station, the host base station may monitor at least one data packet sent by the first relay base station on the third time-frequency resource, where a receiving duration of the host base station for each first data packet in the at least one data packet is a second duration.
It should be understood that step 205 is an optional step, if step 205 is not performed, step 206 may be performed directly after step 204 is performed, that is, the first relay base station may add all first data packets in the at least one data packet to the short TTI queue, and if step 205 is not performed, steps 210 to 213 are not required.
The embodiment of the present application is not limited to the execution sequence of step 202, step 202 may be performed before any of steps 203 to 207 and steps 210 to 211, and step 202 may be performed after any of steps 203 to 207 and steps 210 to 211, as long as it is performed before the first relay base station determines to transmit the time-frequency resource of the first data packet.
It should be noted that, the embodiment of the present application is not limited to the relationship between the execution times of steps 201 to 202 and steps 203 to 213, and the execution times of steps 201 to 202 may be different from the execution times of steps 203 to 213.
In the embodiment of the application, the short TTI technology is applied to the communication process between the first relay base station and the host base station, and under the condition that the first relay base station supports the short TTI, the first relay base station is provided with the short TTI queue, can acquire at least two first data packets to be sent from the short TTI queue, and sends two adjacent first data packets to be sent to the host base station in a first time length, and compared with the common TTI technology adopted between the first relay base station and the host base station at present, the communication time delay between the first relay base station and the host base station is shortened, the data transmission rate is improved, and the support degree of low-delay service is improved.
2. Relay base station and host base station communicate in the downlink direction
The foregoing describes a working procedure of a data transmission method provided by an embodiment of the present application in a downlink direction, and on the basis of a plurality of embodiments corresponding to fig. 2, the working procedure of the data transmission method provided by the embodiment of the present application in an uplink direction is described next with reference to fig. 4, fig. 4 is an interaction schematic diagram of a host base station and a relay base station provided by an embodiment of the present application, and another embodiment of the data transmission method provided by the embodiment of the present application may include:
401. When the at least one relay base station establishes a backhaul link with the host base station, the host base station receives capability information of the relay base station sent by the at least one relay base station.
In the embodiment of the present application, step 401 is similar to step 201 in the embodiment shown in fig. 2, and the specific implementation manner of step 401 may refer to the description in step 201 above, which is not repeated here.
402. The host base station receives at least one data packet sent by the core network device.
In some embodiments of the present application, since data transmission is performed on a relay base station, a home base station, and a terminal device through a radio access bearer for one service, the home base station may receive at least one data packet sent by a core network device through at least one ERAB bearer. Specifically, the host base station may receive at least one data packet through a ERAB bearer; at least two data packets may also be received over at least two ERAB bearers.
403. The host base station determines a second relay base station corresponding to a second data packet, wherein the second data packet is one of the at least one data packet.
In some embodiments of the present application, since each data packet carries the identification information of the receiver of the data packet, after receiving at least one data packet, the host base station may further determine the identification information of the second relay base station corresponding to one second data packet one by one, that is, determine the second relay base station corresponding to each second data packet.
404. The host base station determines whether the second relay base station supports the short transmission time interval TTI, and if so, proceeds to step 405; if a short TTI is not supported, step 411 is entered.
In some embodiments of the present application, the host base station may determine whether the second relay base station supports a short TTI after determining the second relay base station corresponding to one second data packet.
In one case, when the host base station obtains the capability information of at least one relay base station in step 401, it is determined whether the relay base station supports the short TTI according to the capability information of each relay base station, and further, the supporting information of each relay base station for the short TTI is stored by indexing, arraying, tabulating or other means, then step 404 may specifically include: the host base station judges whether the second relay base station supports the short TTI according to the pre-stored support information of the at least one relay base station for the short TTI, wherein the second relay base station is any one relay base station in the at least one relay base station accessed to the host base station.
In another case, the host base station may store the capability information of each relay base station when obtaining the capability information of at least one relay base station in step 401, and step 404 may specifically include: the host base station acquires the capability information of the second relay base station from the capability information of at least one relay base station, and further judges whether the second relay base station supports the short TTI according to the capability information of the second relay base station.
In the embodiment of the application, when the relay base station is initially accessed to the host base station and establishes a backhaul link with the host base station, the capability information of the relay base station is sent to the host base station, so that when the host base station is initially accessed to the host base station, whether the relay base station supports a short TTI or not can be determined according to the capability information, and the host base station can manage the relay base station according to the capability of the relay base station in time, thereby being beneficial to shortening the transmission delay of the relay base station and the host base station in time, providing a low-delay data transmission channel for users as early as possible and enhancing the user viscosity.
405. And under the condition that the second relay base station supports the short TTI, the host base station acquires a second service quality class identifier QCI corresponding to the second data packet.
In some embodiments of the present application, in a case where the host base station determines that the second relay base station supports the short TTI, the host base station may acquire a second QCI corresponding to the second data packet, where the second data packet is a generic concept, and refers to any one of at least one data packet sent by the core network device received by the second relay base station.
Specifically, step 405 is similar to step 204 in the corresponding embodiment of fig. 2, because the host base station receives at least one data packet sent by the core network device through at least one ERAB bearer, the host base station may learn that the second ERAB bearer is used to carry the second data packet, and further may obtain, according to the correspondence between the ERAB bearer and the QCI stored on the host base station, the second QCI corresponding to the second ERAB bearer. The specific implementation of step 405 may refer to the description of step 204 in fig. 2, and will not be described herein.
406. The host base station judges whether the second QCI is matched with the first preset QCI set, if so, step 407 is entered; if not, step 411 is entered.
In the embodiment of the present application, step 406 is similar to step 205 in the corresponding embodiment of fig. 2, the host base station may also store the first preset QCI set, and then after the host base station acquires the second QCI, it may be determined whether the second QCI is matched with the first preset QCI set, where the first preset QCI sets stored in the host base station and the relay base station may be the same and are both generated by the PCRF. The specific implementation of step 406 may refer to the description of step 205 in fig. 2, and will not be described herein.
407. The host base station adds the second data packet to the second short TTI queue.
408. The host base station obtains a second data packet from the second short TTI queue.
409. And the host base station transmits a second data packet to the relay base station in the first time length through the second time-frequency resource.
In the embodiment of the present application, steps 407 to 409 are similar to steps 206 to 208 in the corresponding embodiment of fig. 2, except that the execution bodies of steps 206 to 208 are relay base stations, and the execution bodies of steps 407 to 409 are host base stations. The second short TTI queue differs from the first short TTI queue in that the first short TTI queue is a short TTI queue existing on the relay base station, and the second short TTI queue is a short TTI queue existing on the host base station; the second time-frequency resource and the first time-frequency resource belong to a first time-frequency resource set, wherein the first time-frequency resource set is reserved time-frequency resource for the host base station to transmit data in a short TTI mode for the relay base station, the second time-frequency resource and the first time-frequency resource can be different time-frequency resources or the same time-frequency resource, and the difference is that the second time-frequency resource is used for bearing a second data packet sent by the host base station to the relay base station, and the first time-frequency resource is used for bearing a first data packet sent by the relay base station to the host base station. The specific implementation of steps 407 to 409 may be referred to the descriptions of steps 206 to 208 above, and will not be repeated here.
410. And the relay base station receives a second data packet sent by the host base station through a second time-frequency resource, wherein the receiving duration of the second data packet is the first duration.
In the embodiment of the present application, step 410 is similar to step 209 in the corresponding embodiment of fig. 2, except that the execution body of step 209 is a host base station, and the execution body of step 410 is a relay base station.
In the embodiment of the application, the host base station can pre-store a first preset QCI set, and can further judge whether the QCI corresponding to the second data packet is matched with the first preset QCI set or not under the condition that the first relay base station supports short TTI, and the second data packet is added into the short TTI queue only under the condition of matching, and the QCI can reflect that the service corresponding to the data packet is the requirement condition of time delay, so that the differentiated treatment of the low-delay service and the service insensitive to time delay can be realized, and the smoothness of the data transmission process of the low-delay service can be ensured as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the second relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the second relay base station and the host base station, namely the utilization rate of time-frequency resources between the second relay base station and the host base station is provided.
In the embodiment of the application, the time-frequency resource can be reserved between the host base station and the second relay base station for the data transmission of the second relay base station in a short TTI mode, so that the step that the host base station informs the relay base station that the second data packet is about to be transmitted through the second time-frequency resource is saved when the host base station executes the data transmission operation in the short TTI mode, the time delay of the data transmission between the second relay base station and the host base station is further saved, and the support degree of low-time-delay service is further improved.
411. The host base station adds the second data packet to a second normal TTI queue.
412. The host base station obtains a second data packet from the second normal TTI queue.
413. And the host base station transmits a second data packet to the relay base station in a second time period through a fourth time-frequency resource.
In the embodiment of the present application, steps 411 to 413 are similar to steps 210 to 212 in the corresponding embodiment of fig. 2, except that the execution bodies of steps 210 to 212 are relay base stations, and the execution bodies of steps 411 to 413 are host base stations. The second normal TTI queue is different from the first normal TTI queue in that the first normal TTI queue is a normal TTI queue existing on the relay base station, and the second normal TTI queue is a normal TTI queue existing on the host base station; the fourth time-frequency resource and the third time-frequency resource are both assigned to a third time-frequency resource set, the third time-frequency resource set is a time-frequency resource reserved by the host base station for the relay base station to perform data transmission in a common TTI mode, and the fourth time-frequency resource and the third time-frequency resource can be different time-frequency resources or the same time-frequency resource, and the difference is that the fourth time-frequency resource is used for bearing a second data packet sent by the host base station to the relay base station, and the third time-frequency resource is used for bearing a first data packet sent by the relay base station to the host base station. Specific implementations of steps 411 to 413 may be referred to the descriptions of steps 210 to 212 above, and are not repeated here.
414. And the relay base station receives a second data packet sent by the host base station through a fourth time-frequency resource, wherein the receiving duration of the second data packet is a second duration.
In the embodiment of the present application, step 414 is similar to step 213 in the corresponding embodiment of fig. 2, except that the execution body of step 213 is a host base station, and the execution body of step 414 is a relay base station.
In the embodiment of the application, the short TTI technology is applied to the communication process between the first relay base station and the host base station, the host base station can determine the relay base station corresponding to the second data packet after receiving at least one data packet sent by the core network equipment, and under the condition that the relay base station supports the short TTI, the host base station sends two adjacent first data packets to be sent to the host base station in a first time period, and compared with the common TTI technology adopted between the first relay base station and the host base station at present, the communication time delay between the first relay base station and the host base station is shortened, the data transmission rate is favorably improved, and the support degree of low-delay service is improved.
In order to better implement the above-described scheme of the embodiment of the present application on the basis of the embodiments corresponding to fig. 2 to 4, a related apparatus for implementing the above-described scheme is further provided below. Referring to fig. 5 in detail, fig. 5 is a schematic structural diagram of a relay base station according to an embodiment of the present application, and relay base station 500 includes an obtaining unit 501 and a sending unit 502. Wherein, the obtaining unit 501 is configured to obtain at least one data packet from the short TTI queue when the relay base station supports the short transmission time interval TTI; a transmitting unit 502, configured to transmit a first data packet to a host base station in a first duration, where the first data packet is one data packet in the at least one data packet, and the length of the first duration is less than 1 millisecond.
In the embodiment of the present application, the short TTI technology is applied to a communication process between a relay base station and a host base station, where the relay base station supports a short TTI, a short TTI queue is provided on the relay base station, and the acquiring unit 501 may acquire at least two first data packets to be sent from the short TTI queue, and the transmitting unit 502 sends two adjacent first data packets to be sent to the host base station in a first time period, where the length of the first time period is less than 1 ms, so that compared with the conventional TTI technology adopted between the relay base station and the host base station, the communication delay between the relay base station and the host base station is shortened, which is favorable to improving the data transmission rate and improving the support degree for low-delay services.
In a possible design, the obtaining unit 501 is further configured to obtain a first quality of service class identifier QCI corresponding to the first data packet; the relay base station further includes: and a joining unit 503, configured to join the first data packet into the short TTI queue by the relay base station if the first QCI matches with a first preset QCI set, where the first preset QCI set includes at least one QCI.
In the embodiment of the present application, the first relay base station and the host base station may store the first preset QCI set in advance, and in the case that the first relay base station supports the short TTI, the first relay base station may further determine whether the QCI corresponding to the first data packet is matched with the first preset QCI set, and only in the case of matching, the adding unit 503 may add the first data packet into the short TTI queue, and since the QCI may reflect that the service corresponding to the data packet is a time delay requirement condition, it is possible to implement differentiated treatment on the low-latency service and the time delay insensitive service, so as to ensure smoothness of the data transmission process of the low-latency service as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the first relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the first relay base station and the host base station, namely the utilization rate of time-frequency resources between the first relay base station and the host base station is provided.
In one possible design, the sending unit 502 is further configured to send capability information of the relay base station to the home base station when the relay base station establishes a backhaul link with the home base station, where the capability information is used to identify that the relay base station supports a short TTI, and the backhaul link is a link established when the relay base station initially accesses the home base station.
In the embodiment of the present application, when the relay base station initially accesses the host base station and establishes a backhaul link with the host base station, the sending unit 502 sends the capability information of the relay base station to the host base station, so that when the host base station initially accesses the host base station, it can be determined whether the relay base station supports a short TTI according to the capability information, and further, the host base station can manage the relay base station according to the capability of the relay base station in time, thereby being beneficial to shortening the transmission delay between the relay base station and the host base station in time, and being beneficial to providing a low-delay data transmission channel for users as early as possible, so as to enhance the user viscosity.
In one possible design, the sending unit 502 is specifically configured to: and sending a first data packet to the host base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission in a short TTI mode for the relay base station.
In the embodiment of the present application, the host base station and the first relay base station may reserve time-frequency resources for the data transmission of the first relay base station in a short TTI manner, so that when the sending unit 502 performs the data sending operation in a short TTI manner, steps such as sending a resource scheduling request to the host base station by the first relay base station, dividing the time-frequency resources by the host base station, and the like are saved, thereby further saving the time delay of the data transmission between the first relay base station and the host base station, and further improving the support degree for the low-time-delay service.
In one possible design, the first time length may be 2 symbols or 3 symbols in length in the time domain.
In the embodiment of the application, the specific duration of the first duration is provided, the executable performance of the scheme is improved, the length of the first duration is shortened from less than 1 millisecond to 2 symbols or 3 symbols, the communication time delay between the first relay base station and the host base station is further shortened, and the support degree of low-time delay service is improved.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a host base station according to an embodiment of the present application, where the host base station includes a receiving unit 601, a determining unit 602, and a sending unit 603. Wherein, the receiving unit 601 is configured to receive at least one data packet sent by a core network device; a determining unit 602, configured to determine a relay base station corresponding to a second data packet, where the second data packet is one of at least one data packet; a sending unit 603, configured to send, in a case where the relay base station supports the short transmission time interval TTI, the second data packet to the relay base station in a first duration, where the length of the first duration is less than 1 millisecond.
In the embodiment of the present application, the short TTI technology is applied to the communication process between the first relay base station and the host base station, after the receiving unit 601 receives at least one data packet sent by the core network device, the determining unit 602 may determine the relay base station corresponding to the second data packet, and under the condition that the relay base station supports the short TTI, the sending unit 603 sends two adjacent first data packets to be sent to the host base station within a first time period, and because the length of the first time period is less than 1 millisecond, compared with the conventional TTI technology adopted between the first relay base station and the host base station, the communication delay between the first relay base station and the host base station is shortened, which is favorable to improving the data transmission rate and improving the support degree for the low-latency service.
In one possible design, the host base station further comprises: an acquisition unit 604 and a joining unit 605; an obtaining unit 604, configured to obtain a second quality of service class identifier QCI corresponding to a second data packet; a joining unit 605, configured to join the second data packet into a short TTI queue if the second QCI matches a first preset QCI set, where the first preset QCI set includes at least one QCI; the transmitting unit 603 specifically is configured to: and acquiring a second data packet from the short TTI queue, and transmitting the second data packet to the relay base station in the first time period.
In the embodiment of the present application, the host base station may store a first preset QCI set in advance, and in the case that the first relay base station supports a short TTI, it may further determine whether the QCI corresponding to the second data packet is matched with the first preset QCI set, and only in the case of matching, the adding unit 605 adds the second data packet into the short TTI queue, and because the QCI may reflect that the service corresponding to the data packet is a time delay requirement, it may implement differentiated treatment on a low-delay service and a time delay insensitive service, so as to ensure smoothness of a data transmission process of the low-delay service as much as possible; the common service is insensitive to time delay, namely the beneficial effect brought by reducing the transmission time delay of the common service between the second relay base station and the host base station is not great, and the method is beneficial to improving the intelligence of data transmission between the second relay base station and the host base station, namely the utilization rate of time-frequency resources between the second relay base station and the host base station is provided.
In one possible design, the receiving unit 601 is further configured to receive capability information of the relay base station sent by the relay base station when the host base station establishes a backhaul link with the relay base station; the determining unit 602 is further configured to determine that the relay base station supports the short TTI according to capability information of the relay base station.
In the embodiment of the application, when the relay base station is initially accessed to the host base station and establishes a backhaul link with the host base station, the receiving unit 601 can receive the capability information sent by the relay base station, so that when the host base station is initially accessed to the host base station, whether the relay base station supports a short TTI can be determined according to the capability information, and the host base station can manage the relay base station in time according to the capability of the relay base station, thereby being beneficial to shortening the transmission delay of the relay base station and the host base station in time, being beneficial to providing a low-delay data transmission channel for users as early as possible, and enhancing the user viscosity.
In one possible design, the sending unit 603 is specifically configured to: and sending each second data packet to the relay base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission of the relay base station in a short TTI mode.
In the embodiment of the present application, time-frequency resources can be reserved between the host base station and the second relay base station for data transmission of the second relay base station in a short TTI manner, so that when the sending unit 603 performs data sending operation in a short TTI manner, a step that the host base station informs the relay base station that the second data packet is about to be sent through the second time-frequency resources is saved, thereby further saving the time delay of data transmission between the second relay base station and the host base station, and further improving the support degree of low-time-delay service.
In one possible design, the receiving unit 601 is further configured to receive each first data packet sent by the relay base station, where a receiving duration of each first data packet is a first duration.
In the embodiment of the application, not only the implementation scheme of how the host base station utilizes the short TTI technology to transmit data in the downlink direction is provided, but also the implementation scheme of how the host base station utilizes the short TTI technology to receive data in the uplink direction is provided, the implementation scene of the scheme is expanded, and the comprehensiveness of the scheme is improved.
In one possible design, the first time length may be 2 symbols or 3 symbols in length in the time domain.
In the embodiment of the application, the specific duration of the first duration is provided, the executable performance of the scheme is improved, the length of the first duration is shortened from less than 1 millisecond to 2 symbols or 3 symbols, the communication time delay between the first relay base station and the host base station is further shortened, and the support degree of low-time delay service is improved.
Next, a communication device provided in the embodiment of the present application may be used to implement the steps performed by the relay base station in the above embodiment, or may be used to implement the steps performed by the host base station in the above embodiment. When the communication device is configured to implement the steps performed by the relay base station in the foregoing embodiment, the communication device may be deployed with the relay base station in the embodiment shown in fig. 5; the communications device may be configured with the hosting base station in the embodiment shown in fig. 6 when the communications device is configured to implement the steps performed by the hosting base station in the above embodiment. Referring to fig. 7, fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application, and a communication device 700 includes: the relay base station 700 comprises a receiver 701, a transmitter 702, a processor 703 and a memory 704 (wherein the number of processors 703 in the relay base station 700 may be one or more, one processor is exemplified in fig. 7), wherein the processor 703 may comprise an application processor 7031 and a communication processor 7032. In some embodiments of the application, the receiver 701, transmitter 702, processor 703, and memory 704 may be connected by a bus or other means.
Memory 704 may include read-only memory and random access memory, and provides instructions and data to processor 703. A portion of memory 704 may also include non-volatile random access memory (non-volatile random access memory, NVRAM). The memory 704 stores a processor and operating instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, where the operating instructions may include various operating instructions for implementing various operations.
The processor 703 controls the operation of the relay base station. In a specific application, the various components of the relay base station are coupled together by a bus system that may include, in addition to a data bus, a power bus, a control bus, a status signal bus, and the like. For clarity of illustration, however, the various buses are referred to in the figures as bus systems.
The method disclosed in the above embodiment of the present application may be applied to the processor 703 or implemented by the processor 703. The processor 703 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 703 or by instructions in the form of software. The processor 703 may be a general purpose processor, a digital data processor (DSP), a microprocessor or a microcontroller, and may further include an Application SPECIFIC INTEGRATED Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The processor 703 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 704, and the processor 703 reads information in the memory 704 and, in combination with its hardware, performs the steps of the method described above.
The receiver 701 may be used to receive input numeric or character information and to generate signal inputs related to the relevant settings and function control of the relay base station. The transmitter 702 may be used to output numeric or character information via a first interface; the transmitter 702 may also be configured to send instructions to the disk group via the first interface to modify data in the disk group; the transmitter 702 may also include a display device such as a display screen.
In one case, the processor 703 is configured to perform the data transmission method performed by the relay base station in the corresponding embodiment of fig. 5. Specifically, the application processor 7031 is configured to obtain at least one data packet from the short TTI queue when the relay base station supports the short transmission time interval TTI; and transmitting a first data packet to the host base station in a first time length, wherein the first data packet is one data packet in at least one data packet, and the length of the first time length is less than 1 millisecond.
In one possible design, the application processor 7031 is further configured to obtain a first quality of service class identifier QCI corresponding to the first data packet; and adding the first data packet into a short TTI queue under the condition that the first QCI is matched with a first preset QCI set, wherein the first preset QCI set comprises at least one QCI.
In one possible design, the application processor 7031 is further configured to send capability information of the relay base station to the host base station when the relay base station establishes a backhaul link (backhaul) with the host base station, where the capability information is used to identify that the relay base station supports a short TTI, and the backhaul link is a link that is established when the relay base station initially accesses the host base station.
In one possible design, the application processor 7031 is specifically configured to: and sending a first data packet to the host base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission in a short TTI mode for the relay base station.
In one possible design, the first time length may be 2 symbols or 3 symbols in length in the time domain.
It should be noted that, the specific manner in which the application processor 7031 executes the above steps is based on the same concept as that of the method embodiments corresponding to fig. 2 to 3 in the present application, and the technical effects brought by the method embodiments corresponding to fig. 2 to 3 in the present application are the same, and the specific details can be referred to the descriptions in the method embodiments shown in the foregoing description of the present application, which is not repeated here.
In another case, the processor 703 is configured to perform the data transmission method performed by the host base station in the corresponding embodiment of fig. 6. Specifically, the application processor 7031 is configured to receive at least one data packet sent by the core network device; determining a relay base station corresponding to a second data packet, wherein the second data packet is one data packet in at least one data packet; and in the case that the relay base station supports the short Transmission Time Interval (TTI), sending a second data packet to the relay base station in a first time length, wherein the length of the first time length is less than 1 millisecond.
In one possible design, the application processor 7031 is further configured to obtain a second quality of service class identifier QCI corresponding to the second data packet; under the condition that the second QCI is matched with a first preset QCI set, the host base station adds the second data packet into a short TTI queue, and the first preset QCI set comprises at least one QCI;
The application processor 7031 is specifically configured to: and acquiring a second data packet from the short TTI queue, and transmitting the second data packet to the relay base station in the first time period.
In one possible design, the application processor 7031 is further configured to receive capability information of the relay base station sent by the relay base station when the host base station establishes a backhaul link with the relay base station;
and the host base station determines that the relay base station supports the short TTI according to the capability information of the relay base station.
In one possible design, the application processor 7031 is specifically configured to: and sending a second data packet to the relay base station in the first time length through a second time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission of the relay base station in a short TTI mode.
In one possible design, the first time length may be 2 symbols or 3 symbols in length in the time domain.
It should be noted that, the specific manner in which the application processor 7031 executes the above steps is based on the same concept as that of the method embodiment corresponding to fig. 4 in the present application, so that the technical effects thereof are the same as those of the method embodiment corresponding to fig. 4 in the present application, and the specific details can be found in the descriptions of the foregoing method embodiments of the present application, which are not repeated herein.
Also provided in an embodiment of the present application is a computer program product comprising a program for performing data processing, which when run on a computer causes the computer to perform the steps performed by the relay base station in the method described in the embodiment shown in fig. 2 or fig. 3, or causes the computer to perform the steps performed by the host base station in the method described in the embodiment shown in fig. 4.
In an embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a program for performing data processing, which when run on a computer causes the computer to perform the steps performed by the relay base station in the method described in the embodiment shown in fig. 2 or fig. 3 or causes the computer to perform the steps performed by the host base station in the method described in the embodiment shown in fig. 4.
The relay base station or the host base station provided by the embodiment of the application can be a chip, and the chip comprises: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, pins or circuitry, etc. The processing unit may execute the computer-executable instructions stored in the storage unit to cause a chip in the terminal to perform the data transmission method according to any one of the above-mentioned first aspects. Alternatively, the storage unit is a storage unit in the chip, such as a register, a cache, or the like, and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a random access memory (random access memory, RAM), or the like.
The processor mentioned in any of the above may be a general-purpose central processing unit, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the method of the first aspect.
It should be further noted that the above-described apparatus embodiments are merely illustrative, and that the units described as separate units may or may not be physically separate, and that units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the application, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines.
From the above description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, or of course by means of special purpose hardware including application specific integrated circuits, special purpose CPUs, special purpose memories, special purpose components, etc. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions can be varied, such as analog circuits, digital circuits, or dedicated circuits. But a software program implementation is a preferred embodiment for many more of the cases of the present application. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present application.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.
Claims (17)
1. A method of data transmission, the method comprising:
Under the condition that a relay base station supports a short Transmission Time Interval (TTI), the relay base station acquires at least one data packet from a short TTI queue;
the relay base station transmits a first data packet to the host base station in a first time length, wherein the first data packet is one data packet in the at least one data packet, and the length of the first time length is less than 1 millisecond;
The relay base station transmits a first data packet to the host base station in a first time length, including:
The relay base station sends a first data packet to a host base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission in a short TTI mode for the relay base station.
2. The method of claim 1, wherein before the relay base station transmits the first data packet to the host base station for the first time period, the method further comprises:
the relay base station acquires a first quality of service class identifier QCI corresponding to the first data packet;
and under the condition that the first QCI is matched with a first preset QCI set, the relay base station adds the first data packet into the short TTI queue, wherein the first preset QCI set comprises at least one QCI.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
When the relay base station establishes a backhaul link with the host base station, the relay base station sends capability information of the relay base station to the host base station, where the capability information is used to identify that the relay base station supports a short TTI, where the backhaul link is a link established when the relay base station initially accesses the host base station.
4. The method according to claim 1 or 2, wherein the first duration is 2 symbols or 3 symbols in length in the time domain.
5. A method of data transmission, the method comprising:
the host base station receives at least one data packet sent by core network equipment;
the host base station determines a relay base station corresponding to a second data packet, wherein the second data packet is one data packet in the at least one data packet;
in the case that the relay base station supports a short transmission time interval TTI, the host base station transmits the second data packet to the relay base station in a first duration, where the length of the first duration is less than 1 millisecond;
The host base station sending a second data packet to the relay base station in a first time period, including:
And the host base station sends a second data packet to the relay base station in a first time period through a first time-frequency resource, wherein the first time-frequency resource is assigned to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission of the relay base station in a short TTI mode.
6. The method of claim 5, wherein before the host base station transmits the second data packet to the relay base station within a first time period, the method further comprises:
the host base station obtains a second service quality class identifier QCI corresponding to the second data packet;
If the second QCI is matched with a first preset QCI set, the host base station adds the second data packet to the short TTI queue, wherein the first preset QCI set comprises at least one QCI;
The host base station sending a second data packet to the relay base station in a first time period, including:
And the host base station acquires the second data packet from the short TTI queue and sends the second data packet to the relay base station in the first time period.
7. The method according to claim 5 or 6, characterized in that the method further comprises:
When the host base station establishes a return link with the relay base station, the host base station receives capability information of the relay base station sent by the relay base station;
and the host base station determines that the relay base station supports a short TTI according to the capability information of the relay base station.
8. The method of claim 5 or 6, wherein the first duration is 2 symbols or 3 symbols in length in the time domain.
9. A relay base station, the relay base station comprising:
An obtaining unit, configured to obtain at least one data packet from a short TTI queue when the relay base station supports a short transmission time interval TTI;
a sending unit, configured to send a first data packet to a host base station in a first duration, where the first data packet is one data packet in the at least one data packet, and the length of the first duration is less than 1 millisecond;
The sending unit is specifically configured to:
And sending a first data packet to a host base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission of the relay base station in a short TTI mode.
10. The relay base station of claim 9, wherein,
The acquiring unit is further configured to acquire a first quality of service class identifier QCI corresponding to the first data packet;
The relay base station further includes: and the adding unit is used for adding the first data packet into the short TTI queue under the condition that the first QCI is matched with a first preset QCI set, wherein the first preset QCI set comprises at least one QCI.
11. The relay base station according to claim 9 or 10, wherein,
The sending unit is further configured to send capability information of the relay base station to the home base station when the relay base station establishes a backhaul link with the home base station, where the capability information is used to identify that the relay base station supports a short TTI, and the backhaul link is a link established when the relay base station initially accesses the home base station.
12. The relay base station according to claim 9 or 10, wherein the first duration is 2 symbols or 3 symbols in length in the time domain.
13. A host base station, the host base station comprising:
a receiving unit, configured to receive at least one data packet sent by a core network device;
a determining unit, configured to determine a relay base station corresponding to a second data packet, where the second data packet is one data packet in the at least one data packet;
A sending unit, configured to send the second data packet to the relay base station in a first duration when the relay base station supports a short transmission time interval TTI, where the length of the first duration is less than 1 millisecond;
The sending unit is specifically configured to: and sending each second data packet to the relay base station in a first time length through a first time-frequency resource, wherein the first time-frequency resource belongs to a first time-frequency resource set, and the first time-frequency resource set is a time-frequency resource reserved by the host base station for data transmission of the relay base station in a short TTI mode.
14. The host base station of claim 13, wherein the host base station further comprises: an acquisition unit and a joining unit; wherein,
The acquiring unit is configured to acquire a second quality of service class identifier QCI corresponding to the second data packet;
The adding unit is configured to add the second data packet to the short TTI queue when the second QCI is matched with a first preset QCI set, where the first preset QCI set includes at least one QCI;
the sending unit is specifically configured to: and acquiring the second data packet from the short TTI queue, and transmitting the second data packet to the relay base station in the first time period.
15. The host base station of claim 13 or 14, wherein,
The receiving unit is further configured to receive capability information of the relay base station sent by the relay base station when the host base station establishes a backhaul link with the relay base station;
The determining unit is further configured to determine that the relay base station supports a short TTI according to capability information of the relay base station.
16. The host base station according to claim 13 or 14, wherein the first duration is 2 symbols or 3 symbols in length in the time domain.
17. A communication device comprising a processor and a memory, the processor being coupled to the memory, wherein the communication device is a relay base station or a home base station;
The memory is used for storing programs;
the processor is configured to execute a program in the memory, to cause the communication device to perform the method according to any one of claims 1 to 4, or to cause the communication device to perform the method according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581312.9A CN112153671B (en) | 2019-06-29 | 2019-06-29 | Data transmission method and related equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581312.9A CN112153671B (en) | 2019-06-29 | 2019-06-29 | Data transmission method and related equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112153671A CN112153671A (en) | 2020-12-29 |
| CN112153671B true CN112153671B (en) | 2024-05-03 |
Family
ID=73891281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910581312.9A Active CN112153671B (en) | 2019-06-29 | 2019-06-29 | Data transmission method and related equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112153671B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009474A (en) * | 2013-02-07 | 2015-10-28 | 交互数字专利控股公司 | Physical layer (phy) design for a low latencymillimeter wave (mmw) backhaul system |
| CN106550480A (en) * | 2015-09-21 | 2017-03-29 | 中兴通讯股份有限公司 | A kind of accidental access method, apparatus and system |
| WO2017078786A1 (en) * | 2015-11-03 | 2017-05-11 | Intel IP Corporation | Short transmission time interval (tti) |
| CN107535010A (en) * | 2015-05-29 | 2018-01-02 | 华为技术有限公司 | A kind of LTE is with interior trunking method, apparatus and system |
| CN107852302A (en) * | 2015-07-16 | 2018-03-27 | 高通股份有限公司 | Low latency device-to-device communicates |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170332401A1 (en) * | 2016-05-13 | 2017-11-16 | Qualcomm Incorporated | Multiple transmission time interval coexistence |
| CN110167174B (en) * | 2018-02-14 | 2023-07-28 | 华为技术有限公司 | Relay transmission method and device |
-
2019
- 2019-06-29 CN CN201910581312.9A patent/CN112153671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009474A (en) * | 2013-02-07 | 2015-10-28 | 交互数字专利控股公司 | Physical layer (phy) design for a low latencymillimeter wave (mmw) backhaul system |
| CN107535010A (en) * | 2015-05-29 | 2018-01-02 | 华为技术有限公司 | A kind of LTE is with interior trunking method, apparatus and system |
| CN107852302A (en) * | 2015-07-16 | 2018-03-27 | 高通股份有限公司 | Low latency device-to-device communicates |
| CN106550480A (en) * | 2015-09-21 | 2017-03-29 | 中兴通讯股份有限公司 | A kind of accidental access method, apparatus and system |
| WO2017078786A1 (en) * | 2015-11-03 | 2017-05-11 | Intel IP Corporation | Short transmission time interval (tti) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112153671A (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11234238B2 (en) | Method for resource configuration, terminal device and network device | |
| US8243615B2 (en) | Allocation of user equipment identifier | |
| KR101355771B1 (en) | Method and apparatus for efficient persistent resource assignment in communication systems | |
| WO2019028694A1 (en) | Resource allocation method, first device and second device | |
| JP2019519946A (en) | Relay transmission method | |
| JP6731488B2 (en) | Relay transmission method and device | |
| WO2018132988A1 (en) | Data packet transmission method and terminal | |
| RU2742100C1 (en) | Method of transmitting data, end device and network device | |
| EP3755015A1 (en) | Communication method, first terminal device and second terminal device | |
| KR101858998B1 (en) | Method and Apparatus for Uplink Resource Allocation in a Mobile Communication System | |
| JP6608528B2 (en) | Wireless communication method, network device, and terminal device | |
| US20220263879A1 (en) | Multicast session establishment method and network device | |
| CN110971349A (en) | Repeated transmission method, terminal and network side equipment | |
| JP2020191672A (en) | Relay transmission method and device | |
| US11974317B2 (en) | Data transmission method and apparatus, computer device, and system | |
| CN110022580B (en) | Method and device for establishing bearing | |
| WO2019136622A1 (en) | Data transmission method and device, and computer storage medium | |
| JP4779042B2 (en) | Radio channel resource scheduling system and method | |
| WO2020200043A1 (en) | Communication method and communication device | |
| CN112153671B (en) | Data transmission method and related equipment | |
| KR20120028197A (en) | Group control method for machine type communication and mobile communication system using the method | |
| CN115515091A (en) | Network address translation method, relay device, communication system, and storage medium | |
| CN106465064A (en) | Data stream transmission method, device and system | |
| CN104853443B (en) | A kind of method and apparatus of processing control signaling | |
| CN104137605A (en) | Method, user equipment and base station for transmitting data |
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 |