CN107547178B - Data transmission method, device, base station, terminal equipment and system - Google Patents
Data transmission method, device, base station, terminal equipment and system Download PDFInfo
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- CN107547178B CN107547178B CN201610497241.0A CN201610497241A CN107547178B CN 107547178 B CN107547178 B CN 107547178B CN 201610497241 A CN201610497241 A CN 201610497241A CN 107547178 B CN107547178 B CN 107547178B
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Abstract
The invention provides a data transmission method, a device, a base station, terminal equipment and a system, wherein the data transmission method comprises the steps of sending a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to the terminal equipment; monitoring whether the terminal equipment sends the alternative resource position; receiving the alternative resource position when the terminal equipment sends the alternative resource position; and re-sending the transmission packet to the terminal equipment based on the alternative resource position so that the terminal equipment successfully demodulates the transmission packet. The method and the device can effectively improve the probability of successful demodulation of the Physical Downlink Shared Channel (PDSCH) by the terminal equipment and improve the use experience of users.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a data transmission method, apparatus, base station, terminal device, and system.
Background
The Long Term Evolution Project (LTE) is the largest new technology development Project launched by the 3rd Generation Partnership Project (3 GPP) in the last two years, and takes OFDM/FDMA as the core. The main advantages of LTE are high peak rate, small system delay, and support for flexible bandwidth configuration. For example, 20MHz spectrum bandwidth can provide peak rates of 100Mbps downlink and 50Mbps uplink, internal one-way transmission delay of the user side is less than 5ms, flexible configuration of 1.25MHz to 20MHz bandwidth is supported, and cell capacity can be improved by using carrier aggregation technology. In the related art, trunking communication is implemented based on LTE, and a base station transmits a transmission packet to a terminal device based on a Physical Downlink Control Channel (PDSCH).
In this way, there is no response feedback as to whether the transmission packet is successfully demodulated by the terminal device, and the probability that the terminal device successfully demodulates the transmission packet is low.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide a data transmission method, which can effectively improve the probability of successful demodulation of the PDSCH, and improve the user experience.
Another object of the present invention is to provide a data transmission method.
An object of the present invention is to provide a data transmission apparatus.
Another object of the present invention is to provide a data transmission apparatus.
Another object of the present invention is to provide a base station.
Another object of the present invention is to provide a terminal device.
Another object of the present invention is to provide a data transmission system.
In order to achieve the above object, an embodiment of the first aspect of the present invention provides a data transmission method, including: transmitting a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to terminal equipment; monitoring whether the terminal equipment sends an alternative resource position; when the terminal equipment sends the alternative resource position, receiving the alternative resource position; and retransmitting the transmission packet to the terminal equipment based on the alternative resource position so that the terminal equipment successfully demodulates the transmission packet.
In the data transmission method provided in the embodiment of the first aspect of the present invention, the alternative resource location sent by the terminal device is received, and the transmission packet is sent to the terminal device again based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet, and therefore, the probability of successfully demodulating the PDSCH, which is the physical downlink shared channel, by the terminal device can be effectively improved, and the user experience of the user is improved.
In order to achieve the above object, an embodiment of a second aspect of the present invention provides a data transmission method, including: receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station; judging whether the Physical Downlink Shared Channel (PDSCH) signals in the transmission packet are successfully demodulated; when the PDSCH signals in the transmission packet are not successfully demodulated, acquiring alternative resource positions; and sending the alternative resource position to the base station so that the base station resends the transmission packet to the terminal equipment based on the alternative resource position.
In the data transmission method provided by the embodiment of the second aspect of the present invention, by receiving a transmission packet carried by a physical downlink shared channel PDSCH sent by a base station, when a physical downlink shared channel PDSCH signal in the transmission packet is not successfully demodulated, an alternative resource location is obtained, and the alternative resource location is sent to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location, and can transmit the transmission packet by using a mechanism of multiple retransmissions when the physical downlink shared channel PDSCH signal is not successfully demodulated, thereby effectively improving the probability of successful demodulation of the physical downlink shared channel PDSCH by the terminal device, and improving the user experience.
In order to achieve the above object, a data transmission device according to a third aspect of the present invention includes: the first sending module is used for sending a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to the terminal equipment; the monitoring module is used for monitoring whether the terminal equipment sends the alternative resource position; a first receiving module, configured to receive the alternative resource location when the terminal device sends the alternative resource location; and a second sending module, configured to resend the transmission packet to the terminal device based on the candidate resource location, so that the terminal device successfully demodulates the transmission packet.
The data transmission device provided by the embodiment of the third aspect of the present invention receives the alternative resource location sent by the terminal device, and sends the transmission packet to the terminal device again based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet, which can effectively improve the probability of successfully demodulating the PDSCH, and improve the user experience of the user.
In order to achieve the above object, a data transmission device according to a fourth aspect of the present invention includes: a second receiving module, configured to receive a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station; a judging module, configured to judge whether a PDSCH signal of a physical downlink shared channel in the transmission packet is successfully demodulated; an obtaining module, configured to obtain a candidate resource location when a PDSCH signal of a physical downlink shared channel in the transmission packet is not successfully demodulated; and a third sending module, configured to send the alternative resource location to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location.
The data transmission device provided by the embodiment of the fourth aspect of the present invention obtains the alternative resource location by receiving the transmission packet carried by the PDSCH in the physical downlink shared channel sent by the base station, and sends the alternative resource location to the base station, so that the base station resends the transmission packet to the terminal device based on the alternative resource location, and can transmit the transmission packet by using a mechanism of multiple retransmissions when the PDSCH in the physical downlink shared channel is not successfully demodulated, thereby effectively improving the probability of successful demodulation of the PDSCH in the physical downlink shared channel by the terminal device, and improving the user experience.
In order to achieve the above object, an embodiment of a fifth aspect of the present invention provides a base station, including: a data transmission apparatus according to an embodiment of the third aspect of the invention.
In the base station provided in the fifth aspect of the present invention, the alternative resource location sent by the terminal device is received, and the transmission packet is sent to the terminal device again based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet, which can effectively improve the probability of successfully demodulating the PDSCH, and improve the user experience of the user.
In order to achieve the above object, a terminal device according to a sixth embodiment of the present invention includes: a data transmission apparatus as claimed in an embodiment of the fourth aspect of the invention.
In the terminal device provided in the embodiment of the sixth aspect of the present invention, by receiving a transmission packet carried by a PDSCH in a physical downlink shared channel sent by a base station, when a PDSCH signal in the transmission packet is not successfully demodulated, an alternative resource location is obtained, and the alternative resource location is sent to the base station, so that the base station sends the transmission packet to the terminal device again based on the alternative resource location, and the transmission packet can be transmitted by using a mechanism of multiple retransmissions when the PDSCH signal in the physical downlink shared channel is not successfully demodulated, thereby effectively improving the probability of successful demodulation of the PDSCH by the terminal device, and improving the user experience.
To achieve the above object, a seventh embodiment of the present invention provides a data transmission system, including: a base station as defined in the fifth embodiment of the present invention, and a terminal device as defined in the sixth embodiment of the present invention.
In the data transmission system provided in the fifth aspect of the embodiment of the present invention, the alternative resource location sent by the terminal device is received, and the transmission packet is sent to the terminal device again based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet, which can effectively improve the probability of successfully demodulating the PDSCH, and improve the user experience.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a data transmission method according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a data transmission method according to another embodiment of the invention;
fig. 4 is a flowchart illustrating a data transmission method according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a data transmission method according to another embodiment of the invention;
fig. 6 is a flowchart illustrating a data transmission method according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a data transmission apparatus according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a data transmission apparatus according to another embodiment of the present invention;
fig. 10 is a schematic structural diagram of a data transmission device according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a flowchart illustrating a data transmission method according to an embodiment of the present invention. The present embodiment is exemplified in a case where the data transmission method is configured as a data transmission apparatus. The data transmission method can be applied to a process of receiving a PDSCH signal of a physical downlink shared channel by a terminal device, where the terminal device is, for example, a Personal Computer (PC), a cloud device or a mobile device, and the mobile device is, for example, a smart phone or a tablet Computer.
Referring to fig. 1, the data transmission method includes:
s11: and transmitting a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to the terminal equipment.
The execution subject of this embodiment may be, for example, a base station.
In the embodiment of the present invention, sending a transmission packet carried by a PDSCH to a terminal device may be sending, by a base station, the transmission packet to the terminal device based on an initial resource location, where the initial resource location is different from an alternative resource location.
It can be understood that the initial resource location is a cell location where a terminal device to receive the transmission packet is located, the initial resource location may be randomly selected by the base station, and the initial resource location may also be read by the base station from a mobile communication operator side (e.g., mobile, telecommunication) server, which is not limited herein.
Optionally, in some embodiments, referring to fig. 2, before S11, the method further includes:
s21: and configuring preset signaling information according to the external instruction.
In the embodiment of the present invention, the external instruction may be, for example, an instruction triggered by a mobile communication carrier, which is not limited thereto.
The mobile communication operator may configure the signaling information according to the importance level information of the signaling information, that is, configure the signaling information with a higher importance level as the preset signaling information.
In this embodiment, the preset signaling information is configured according to the external instruction, where the preset signaling information is signaling information with a higher importance level, and the transmission packet including the preset signaling information can be retransmitted based on the alternative resource location when the transmission packet is not successfully demodulated by the terminal device, so that the demodulation success rate of the terminal device for the preset signaling information can be effectively improved, the packet loss of the preset signaling information is avoided, and the experience of the user in using the mobile communication network is improved.
S12: and monitoring whether the terminal equipment sends the alternative resource position.
Optionally, the base station sends a transmission packet to the terminal device based on the initial resource location, when the resource location signal is in a good state, most of the terminal devices may successfully demodulate the received transmission packet, and some of the terminal devices may not successfully demodulate the transmission packet obtained based on the initial resource location.
In an embodiment of the invention, the initial resource location is different from the alternative resource location.
Optionally, whether the terminal device sends the alternative resource location may be monitored in real time, or whether the terminal device sends the alternative resource location may also be monitored at preset time intervals, which is not limited to this. For example, the base station side may monitor in real time whether the terminal device sends a resource location with the best signal quality for receiving the PDSCH signal of the physical downlink shared channel, that is, an alternative resource location.
S13: and receiving the alternative resource position when the terminal equipment sends the alternative resource position.
Optionally, when the terminal device sends the alternative resource location, the base station receives the alternative resource location sent by the terminal device, so that the base station sends the transmission packet carried by the PDSCH to the terminal device again based on the alternative resource location. It can be understood that the terminal device may send the alternative resource location after not successfully demodulating the transmission packet each time, optionally, the terminal device may send the alternative resource location once or multiple times, and correspondingly, the base station side may also receive the alternative resource location once or multiple times, and stop sending the alternative resource location to the base station side until the terminal device successfully demodulates the transmission packet.
S14: and re-sending the transmission packet to the terminal equipment based on the alternative resource position so that the terminal equipment successfully demodulates the transmission packet.
In the embodiment of the present invention, a base station side may continuously monitor whether a terminal device sends an alternative resource location, and on the terminal device side, when a transmission packet is not successfully demodulated each time, a resource location with a better signal is obtained again as the alternative resource location, and the alternative resource location is transmitted to the base station side, and accordingly, if the base station side monitors that the terminal device sends the alternative resource location after sending the transmission packet carried by the PDSCH, the base station side may indicate that the terminal device does not successfully demodulate the transmission packet sent by the base station side, and the base station side may resend the transmission packet to the terminal device based on the received alternative resource location, so that the terminal device successfully demodulates the transmission packet.
Optionally, in some embodiments, referring to fig. 3, S14 may further include:
s31: and judging whether the signaling information in the transmission packet is preset signaling information.
In the embodiment of the present invention, the preset signaling information may be signaling information with a higher importance level, and the preset signaling information may be, for example, key signaling information carried by the PDSCH.
Optionally, the base station side may determine whether signaling information in a transmission packet carried by the PDSCH is preset signaling information, and trigger a subsequent step when the signaling information is preset signaling information.
S32: and when the signaling information in the transmission packet is preset signaling information, the transmission packet is sent to the terminal equipment based on the alternative resource position, so that the terminal equipment can successfully demodulate the transmission packet.
Optionally, when a transmission packet carried by the PDSCH includes preset signaling information, the transmission packet is sent to the terminal device based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet.
In this embodiment, the preset signaling information is transmitted by adopting a retransmission mechanism, and the transmission packet is retransmitted at the alternative resource position selected by the terminal device, so that the successful demodulation probability of the preset signaling information by the terminal device can be effectively improved.
In this embodiment, the alternative resource position sent by the terminal device is received, and the transmission packet is sent to the terminal device again based on the alternative resource position, so that the terminal device successfully demodulates the transmission packet, the probability that the terminal device successfully demodulates the physical downlink shared channel PDSCH can be effectively improved, and the use experience of the user is improved.
Fig. 4 is a flowchart illustrating a data transmission method according to another embodiment of the present invention. The present embodiment is exemplified in a case where the data transmission method is configured as a data transmission apparatus.
Referring to fig. 4, the data transmission method may include:
s41: and receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station.
The execution subject of the present embodiment may be a terminal device.
In the embodiment of the present invention, receiving a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station may be that a terminal device receives a transmission packet carried by the PDSCH sent by the base station based on an initial resource location, where the initial resource location is different from an alternative resource location.
It can be understood that the initial resource location is a cell location where a terminal device to receive the transmission packet is located, the initial resource location may be randomly selected by the base station, and the initial resource location may also be read by the base station from a mobile communication operator side (e.g., mobile, telecommunication) server, which is not limited herein. The candidate resource location may be, for example, a resource location where the signal quality of the terminal device is better obtained by using a corresponding algorithm, that is, a resource location where the signal quality of the received PDSCH signal is the best.
Optionally, the terminal device receives a transmission packet carried by the PDSCH based on the initial resource location, so as to trigger the subsequent steps.
S42: and judging whether the Physical Downlink Shared Channel (PDSCH) signals in the transmission packet are successfully demodulated.
Optionally, after sending the transmission packet carried by the PDSCH to the terminal device, the base station side determines whether the PDSCH signal in the transmission packet is successfully demodulated, and triggers the subsequent steps when the terminal device does not successfully demodulate the transmission packet sent by the base station side.
S43: and when the PDSCH signals in the physical downlink shared channel in the transmission packet are not successfully demodulated, acquiring the position of the alternative resource.
In an embodiment of the invention, the initial resource location is different from the alternative resource location.
Optionally, when the terminal device successfully demodulates the PDCCH signal and does not successfully demodulate the PDSCH signal, a resource location with the best signal quality for receiving the PDSCH signal, that is, an alternative resource location, is obtained.
It can be understood that the terminal device may send the alternative resource location after not successfully demodulating the transmission packet each time, optionally, the terminal device may send the alternative resource location once or multiple times, and correspondingly, the base station side may also receive the alternative resource location once or multiple times, and stop sending the alternative resource location to the base station side until the terminal device successfully demodulates the transmission packet.
S44: and sending the alternative resource position to the base station so that the base station sends the transmission packet to the terminal equipment again based on the alternative resource position.
In the embodiment of the invention, at the terminal equipment side, when the transmission packet is not successfully demodulated each time, the resource position with a better signal is obtained again as the alternative resource position, and the alternative resource position is transmitted to the base station side, accordingly, if the base station side monitors that the terminal equipment transmits the alternative resource position after transmitting the transmission packet carried by the Physical Downlink Shared Channel (PDSCH) to the terminal equipment, the terminal equipment is characterized that the transmission packet transmitted by the base station side is not successfully demodulated, and the base station side can re-transmit the transmission packet to the terminal equipment based on the received alternative resource position.
Optionally, the terminal device sends the alternative resource location to the base station, so that the base station sends the transmission packet carried by the PDSCH to the terminal device again based on the alternative resource location.
Optionally, the resource location with the best signal quality for receiving the PDSCH signal is sent to the base station, so that the base station sends the transport packet to the terminal device based on the resource location with the best signal quality for receiving the PDSCH signal.
In some embodiments, referring to fig. 5, the data transmission method may further include:
s51: and receiving the transmission packet which is sent again to the terminal equipment by the base station, and demodulating the transmission packet again.
Optionally, when the terminal device does not successfully demodulate the transmission packet sent by the base station side, the base station side may send the transmission packet to the terminal device again based on the received alternative resource location, and the terminal device receives the transmission packet retransmitted by the base station based on the alternative resource location, and demodulates the PDSCH signal of the physical downlink shared channel in the transmission packet that is retransmitted by the terminal device by using the related technology.
In this embodiment, by receiving the transmission packet that is retransmitted to the terminal device by the base station and demodulating the transmission packet again, the transmission packet can be transmitted by using a retransmission mechanism, so that the probability of successfully demodulating the PDSCH of the physical downlink shared channel by the terminal device is effectively improved.
In this embodiment, by receiving a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station, when a PDSCH signal of the PDSCH in the transmission packet is not successfully demodulated, an alternative resource location is obtained, and the alternative resource location is sent to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location.
Fig. 6 is a flowchart illustrating a data transmission method according to another embodiment of the invention. The present embodiment is exemplified in a case where the data transmission method is configured as a data transmission apparatus.
Referring to fig. 6, the data transmission method includes:
s601: and configuring preset signaling information according to the external instruction.
S602: and the base station sends a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to the terminal equipment.
S603: the terminal equipment receives a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station.
S604: and judging whether the Physical Downlink Shared Channel (PDSCH) signals in the transmission packet are successfully demodulated.
S605: and when the PDSCH signals in the physical downlink shared channel in the transmission packet are not successfully demodulated, acquiring the position of the alternative resource.
S606: and the terminal equipment sends the alternative resource position to the base station.
S607: an alternative resource location is received.
S608: and the base station judges whether the signaling information in the transmission packet is preset signaling information.
S609: and when the signaling information in the transmission packet is preset signaling information, the base station resends the transmission packet to the terminal equipment based on the alternative resource position.
S610: and the terminal equipment receives the transmission packet retransmitted by the base station and demodulates the transmission packet again.
The implementation process of this embodiment can refer to the embodiments shown in fig. 1 to fig. 5, and is not described herein again.
In this embodiment, by receiving a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station, when a PDSCH signal of the PDSCH in the transmission packet is not successfully demodulated, an alternative resource location is obtained, and the alternative resource location is sent to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location.
Fig. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention. The data transmission means 70 may be implemented by software, hardware or a combination of both.
Referring to fig. 7, the data transmission device 70 may include: a first sending module 701, a monitoring module 702, a first receiving module 703, and a second sending module 704. Wherein the content of the first and second substances,
a first sending module 701, configured to send a transmission packet carried by a physical downlink shared channel PDSCH to a terminal device.
Optionally, in some embodiments, referring to fig. 8, the first sending module 701 is further configured to: and transmitting the transmission packet to the terminal equipment based on the initial resource position, wherein the initial resource position is different from the alternative resource position.
A monitoring module 702, configured to monitor whether the terminal device sends the candidate resource location.
A first receiving module 703 is configured to receive the alternative resource location when the terminal device sends the alternative resource location.
A second sending module 704, configured to resend the transmission packet to the terminal device based on the alternative resource location, so that the terminal device successfully demodulates the transmission packet.
Optionally, in some embodiments, referring to fig. 8, the second sending module 704 is further configured to: judging whether the signaling information in the transmission packet is preset signaling information or not; and when the signaling information in the transmission packet is preset signaling information, transmitting the transmission packet to the terminal equipment based on the alternative resource position.
Optionally, in some embodiments, referring to fig. 8, the data transmission device 70 may further include:
the configuration module 705 is configured to configure preset signaling information according to an external instruction.
In this embodiment, the alternative resource position sent by the terminal device is received, and the transmission packet is sent to the terminal device again based on the alternative resource position, so that the terminal device successfully demodulates the transmission packet, the probability that the terminal device successfully demodulates the physical downlink shared channel PDSCH can be effectively improved, and the use experience of the user is improved.
Fig. 9 is a schematic structural diagram of a data transmission device according to another embodiment of the present invention. The data transmission means 90 may be implemented by software, hardware or a combination of both.
Referring to fig. 9, the data transmission device 90 may include: a second receiving module 901, a judging module 902, an obtaining module 903, and a third sending module 904. Wherein the content of the first and second substances,
a second receiving module 901, configured to receive a transmission packet carried by a PDSCH of a physical downlink shared channel sent by a base station.
Optionally, in some embodiments, referring to fig. 10, the second receiving module 901 is further configured to: and receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by the base station based on an initial resource position, wherein the initial resource position is different from the alternative resource position.
A determining module 902, configured to determine whether to successfully demodulate the PDSCH signal of the physical downlink shared channel in the transmission packet.
An obtaining module 903, configured to obtain an alternative resource location when a PDSCH signal of a physical downlink shared channel in a transport packet is not successfully demodulated.
A third sending module 904, configured to send the alternative resource location to the base station, so that the base station sends the transmission packet to the terminal device again based on the alternative resource location.
Optionally, in some embodiments, referring to fig. 10, the data transmission device 90 may further include:
a third receiving module 905, configured to receive the transmission packet that is retransmitted to the terminal device by the base station, and demodulate the transmission packet again.
In this embodiment, by receiving a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station, when a PDSCH signal of the PDSCH in the transmission packet is not successfully demodulated, an alternative resource location is obtained, and the alternative resource location is sent to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (17)
1. A data transmission method, comprising the steps of:
transmitting a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to terminal equipment;
monitoring whether the terminal equipment sends an alternative resource position;
when the terminal equipment sends the alternative resource position, receiving the alternative resource position;
and retransmitting the transmission packet to the terminal equipment based on the alternative resource position so that the terminal equipment successfully demodulates the transmission packet.
2. The data transmission method according to claim 1, wherein the sending the transmission packet carried by the downlink shared channel to the terminal device includes:
and transmitting the transmission packet to the terminal equipment based on an initial resource position, wherein the initial resource position is different from the alternative resource position.
3. The data transmission method according to claim 1, wherein the retransmitting the transmission packet to the terminal device based on the alternative resource location further comprises:
judging whether the signaling information in the transmission packet is preset signaling information or not;
and when the signaling information in the transmission packet is the preset signaling information, the transmission packet is sent to the terminal equipment based on the alternative resource position.
4. The data transmission method of claim 3, further comprising:
and configuring the preset signaling information according to an external instruction.
5. A data transmission method, comprising the steps of:
receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station;
judging whether the Physical Downlink Shared Channel (PDSCH) signals in the transmission packet are successfully demodulated;
when the PDSCH signals in the transmission packet are not successfully demodulated, acquiring alternative resource positions;
and sending the alternative resource position to the base station so that the base station resends the transmission packet to the terminal equipment based on the alternative resource position.
6. The data transmission method of claim 5, further comprising:
and receiving the transmission packet which is sent again to the terminal equipment by the base station, and demodulating the transmission packet again.
7. The data transmission method according to claim 6, wherein the receiving the transmission packet carried by the physical downlink shared channel PDSCH sent by the base station includes:
and receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station based on an initial resource position, wherein the initial resource position is different from the alternative resource position.
8. A data transmission apparatus, comprising:
the first sending module is used for sending a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) to the terminal equipment;
the monitoring module is used for monitoring whether the terminal equipment sends the alternative resource position;
a first receiving module, configured to receive the alternative resource location when the terminal device sends the alternative resource location;
and a second sending module, configured to resend the transmission packet to the terminal device based on the candidate resource location, so that the terminal device successfully demodulates the transmission packet.
9. The data transmission apparatus of claim 8, wherein the first sending module is further configured to:
and transmitting the transmission packet to the terminal equipment based on an initial resource position, wherein the initial resource position is different from the alternative resource position.
10. The data transmission apparatus of claim 8, wherein the second sending module is further configured to:
judging whether the signaling information in the transmission packet is preset signaling information or not;
and when the signaling information in the transmission packet is the preset signaling information, the transmission packet is sent to the terminal equipment based on the alternative resource position.
11. The data transmission apparatus of claim 10, further comprising:
and the configuration module is used for configuring the preset signaling information according to an external instruction.
12. A data transmission apparatus, comprising:
a second receiving module, configured to receive a transmission packet carried by a PDSCH (physical downlink shared channel) sent by a base station;
a judging module, configured to judge whether a PDSCH signal of a physical downlink shared channel in the transmission packet is successfully demodulated;
an obtaining module, configured to obtain a candidate resource location when a PDSCH signal of a physical downlink shared channel in the transmission packet is not successfully demodulated;
and a third sending module, configured to send the alternative resource location to the base station, so that the base station sends the transmission packet to a terminal device again based on the alternative resource location.
13. The data transmission apparatus of claim 12, further comprising:
and a third receiving module, configured to receive the transmission packet that is retransmitted to the terminal device by the base station, and demodulate the transmission packet again.
14. The data transmission apparatus of claim 13, wherein the second receiving module is further configured to:
and receiving a transmission packet carried by a Physical Downlink Shared Channel (PDSCH) sent by a base station based on an initial resource position, wherein the initial resource position is different from the alternative resource position.
15. A base station, comprising:
a data transmission arrangement as claimed in any one of claims 8 to 11.
16. A terminal device, comprising:
a data transmission arrangement as claimed in any one of claims 12 to 14.
17. A data transmission system, comprising:
the base station of claim 15, and
the terminal device of claim 16.
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| CN102651679B (en) * | 2011-02-28 | 2016-02-03 | 华为技术有限公司 | Data transmission method, evolution base station and subscriber equipment |
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