CN107454626B - Information sending method, wireless network equipment and terminal - Google Patents
Information sending method, wireless network equipment and terminal Download PDFInfo
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- CN107454626B CN107454626B CN201610379117.4A CN201610379117A CN107454626B CN 107454626 B CN107454626 B CN 107454626B CN 201610379117 A CN201610379117 A CN 201610379117A CN 107454626 B CN107454626 B CN 107454626B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
Abstract
The invention discloses an information sending method, wireless network equipment and a terminal, wherein the method comprises the following steps: receiving a TCP message retransmission request sent by a terminal; based on the TCP message retransmission request, retransmitting the sent data message corresponding to the terminal; or, retransmitting the data to be transmitted corresponding to the terminal; or, the data message corresponding to the terminal is assembled, or split, or repackaged and then sent; the data message comprises a sent data message and/or data to be sent.
Description
Technical Field
The present invention relates to transmission management technologies in the field of communications, and in particular, to an information sending method, a wireless network device, and a terminal.
Background
At present, the TCP protocol adopts mechanisms such as fast retransmission to ensure the service quality, and under the condition of cellular access of the terminal, because the TCP side cannot know the transmission condition of the wireless side, the situation that the wireless side has successfully transmitted or is still transmitting, but the server does not receive the data packet within a certain time exists. In addition, in the fast retransmission mechanism, there may be a case where the uplink ACK message is successfully sent at the wireless side, but the uplink ACK message is not received at the server side, and the server may continuously send acknowledgement messages to start fast retransmission.
Disclosure of Invention
In view of the above, the present invention provides an information sending method, a wireless network device and a terminal, which can solve at least the above problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides an information sending method, which is applied to network equipment and comprises the following steps:
receiving a TCP message retransmission request sent by a terminal;
based on the TCP message retransmission request, performing one of the following processes:
resending the corresponding sent data message;
retransmitting corresponding data to be transmitted;
assembling, or splitting, or repackaging the corresponding data message and then sending the data message;
the feedback message retransmits a reply to the request.
The embodiment of the invention provides an information sending method, which is applied to a terminal and comprises the following steps:
the terminal detects that a TCP layer needs to retransmit a message;
and sending a TCP message retransmission request to the wireless network equipment.
An embodiment of the present invention provides a wireless network device, where the wireless network device includes:
a first receiving unit, configured to receive a TCP message retransmission request sent by a terminal;
a first sending unit, configured to perform one of the following processes based on the TCP message retransmission request:
resending the corresponding sent data message;
retransmitting corresponding data to be transmitted;
assembling, or splitting, or repackaging the corresponding data message and then sending the data message;
the feedback message retransmits a reply to the request.
An embodiment of the present invention provides a terminal, where the terminal includes:
the detection unit is used for detecting that the TCP layer needs to retransmit the message;
and the second sending unit is used for sending a TCP message retransmission request to the wireless network equipment.
The embodiment of the invention provides an information sending method, wireless network equipment and a terminal, which execute data retransmission processing according to self-stored data when a retransmission request of the terminal is received. Therefore, when the network data is stored in the wireless network equipment, the terminal can be prevented from retransmitting the network data, so that the data retransmission of an air interface is reduced; and the protocol does not need to be modified, so that the compatibility is ensured.
Drawings
Fig. 1 is a first flow chart illustrating a method for sending information according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an information sending method according to an embodiment of the present invention;
fig. 3 is a third schematic flow chart of an information sending method according to an embodiment of the present invention;
fig. 4 is a first schematic structural diagram of a wireless network device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a second wireless network device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a third configuration of a wireless network device according to an embodiment of the present invention;
fig. 7 is a schematic view of a terminal assembly structure according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment,
An embodiment of the present invention provides an information sending method, which is applied to a wireless network device, and as shown in fig. 1, the information sending method includes:
step 101: receiving a TCP message retransmission request sent by a terminal;
step 102: based on the TCP message retransmission request, retransmitting the sent data message corresponding to the terminal; or, retransmitting the data to be transmitted corresponding to the terminal; or, the data message corresponding to the terminal is assembled, or split, or repackaged and then sent; the data message comprises a sent data message and/or data to be sent.
Here, it should be noted that, when receiving a TCP message retransmission request sent from the terminal, the terminal may send the retransmission request to the wireless network device when detecting that its TCP layer needs to retransmit a message.
The TCP message retransmission request can also carry mark information of data to be retransmitted;
wherein, the mark information of the data to be retransmitted comprises: internet Protocol (IP) layer, and/or Transmission Control Protocol (TCP) layer information, and/or Packet Data Convergence Protocol (PDCP) layer information;
specifically, the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
That is, when the terminal sends an information retransmission request, the terminal needs to carry at least an identification number or a number of information to be sent in the request.
It can be understood that, the processing that the wireless network device can retransmit data needs to be based on that the wireless network device has cached data information of the terminal in advance, and the following description is made with respect to the processing that the wireless network device obtains cached information:
before receiving a TCP message retransmission request from a terminal, the method further includes: the wireless network equipment side caches the information sent by the terminal; wherein the information comprises: TCP messages, and/or messages with cache flags set in the cache.
The information with the cache flag may be information with a cache flag set at a designated data bit, where 0 may be used to indicate that no cache is required, and 1 may be used to indicate that cache is required.
Correspondingly, the wireless network device side also deletes the cached information periodically, and the method has the following two scenes:
scene one,
Specifically, the caching the information sent by the terminal includes: the wireless network equipment sets a buffer timer; and deleting the cached information when the cache timer is detected to be expired.
The wireless network device sets a cache timer, and specifically includes: and setting the duration of the cache timer to be the duration of a retransmission timer, or to be longer than the duration of the retransmission timer.
The duration of the retransmission timer may be set according to actual conditions, and a data retransmission timer is set in the current TCP layer.
Scene two,
After the caching the information sent by the terminal, the method further comprises: and receiving an indication message sent by the terminal, and deleting the cached information according to the indication message.
The indication information sent by the terminal may include an identification number of the cached information to be deleted.
After the processing scenarios of steps 101 to 102, the method further comprises: and the wireless network equipment feeds back a reply message aiming at the TCP message retransmission request to the terminal side.
Wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests.
Specifically, the feeding back the retransmission acknowledgement message to the terminal side includes: the wireless network equipment checks whether effective data to be retransmitted corresponding to the TCP message retransmission request is cached or not, and if yes, a reply message aiming at the TCP message retransmission request carries confirmation of the retransmission request; if not, the rejection of the retransmission request is carried in a reply message to the TCP message retransmission request.
That is, when the wireless network device side stores data corresponding to the TCP message retransmission request, acknowledgement information is fed back to the terminal, and if the corresponding data is not stored, failure, that is, retransmission of the information cannot be performed, is fed back to the terminal. Whether the corresponding data to be retransmitted is stored or not can be determined according to the identification number or the serial number of the data corresponding to the message retransmission request.
Specifically, the retransmission acknowledgement message includes: and at least carrying a mark of information to be retransmitted in a reply message aiming at the TCP message retransmission request.
Further, the reason for the rejection of the retransmission request includes at least one of:
the information has expired; for example, the indication can be performed by setting an identification bit;
the information is not present;
information retransmission or transmission fails.
Therefore, by adopting the scheme, when the retransmission request of the terminal is received, the data retransmission processing can be executed according to the data stored by the terminal. Therefore, when the network data is stored in the wireless network equipment, the terminal can be prevented from retransmitting the network data, so that the data retransmission of an air interface is reduced; and the protocol does not need to be modified, so that the compatibility is ensured.
Example II,
An embodiment of the present invention provides an information sending method, applied to a terminal, as shown in fig. 2, including:
step 201: the terminal detects that a TCP layer needs to retransmit a message;
step 202: and sending a TCP message retransmission request to the wireless network equipment.
Here, it should be noted that, when receiving a TCP message retransmission request sent from the terminal, the terminal may send the retransmission request to the wireless network device when detecting that its TCP layer needs to retransmit a message.
Specifically, detecting that the TCP layer needs to retransmit the message includes:
if the data retransmission timer of the TCP layer is detected to be up, determining that the TCP layer needs to retransmit the message;
or when the continuous receiving of the confirmation instructions for the preset times is detected.
The preset number of times in this embodiment may be set according to actual situations, for example, the preferred embodiment may be three times.
The message retransmission request at least can carry mark information of data to be retransmitted;
wherein, the mark information of the data to be retransmitted comprises: internet Protocol (IP) layer, and/or Transmission Control Protocol (TCP) layer information, and/or Packet Data Convergence Protocol (PDCP) layer information;
specifically, the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
That is, when the terminal sends an information retransmission request, the terminal needs to carry at least an identification number or a number of information to be sent in the request.
It can be understood that, the processing that the wireless network device can retransmit data needs to be based on that the wireless network device has cached data information of the terminal in advance, and the following description is made with respect to the processing that the wireless network device obtains cached information:
before receiving a TCP message retransmission request from a terminal, the method further includes: the wireless network equipment side caches the information sent by the terminal; wherein the information comprises: TCP messages, and/or messages with cache flags set in the cache.
The information with the cache flag may be information with a cache flag set at a designated data bit, where 0 may be used to indicate that no cache is required, and 1 may be used to indicate that cache is required.
The method further comprises the following steps: and after receiving the information receiving confirmation of the TCP layer, the terminal sends an indication message to the wireless network equipment.
Referring to fig. 3, in this embodiment, information interaction among the terminal, the wireless network device, and the server is provided, and first, the terminal may detect whether the retransmission timer is overtime, and if the retransmission timer is overtime, send a retransmission request to the wireless network device; and when the wireless network equipment side stores corresponding retransmission data, the retransmission confirmation information is sent to the terminal and the data information is retransmitted to the server side.
Therefore, by adopting the scheme, when the retransmission request of the terminal is received, the data retransmission processing can be executed according to the data stored by the terminal. Therefore, when the network data is stored in the wireless network equipment, the terminal can be prevented from retransmitting the network data, so that the data retransmission of an air interface is reduced; and the protocol does not need to be modified, so that the compatibility is ensured.
Example III,
An embodiment of the present invention provides a wireless network device, as shown in fig. 4, including:
a first receiving unit 41, configured to receive a TCP message retransmission request sent by a terminal;
a first sending unit 42, configured to resend the sent data message corresponding to the terminal based on the TCP message retransmission request; or, retransmitting the data to be transmitted corresponding to the terminal; or, the data message corresponding to the terminal is assembled, or split, or repackaged and then sent; the data message comprises a sent data message and/or data to be sent.
Here, it should be noted that, when receiving a TCP message retransmission request sent from the terminal, the terminal may send the retransmission request to the wireless network device when detecting that its TCP layer needs to retransmit a message.
The message retransmission request at least can carry mark information of data to be retransmitted;
wherein, the mark information of the data to be retransmitted comprises: internet Protocol (IP) layer, and/or Transmission Control Protocol (TCP) layer information, and/or Packet Data Convergence Protocol (PDCP) layer information;
specifically, the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
That is, when the terminal sends an information retransmission request, the terminal needs to carry at least an identification number or a number of information to be sent in the request.
It can be understood that, the processing that the wireless network device can retransmit data needs to be based on that the wireless network device has cached data information of the terminal in advance, and the following description is made with respect to the processing that the wireless network device obtains cached information:
before receiving a TCP message retransmission request from a terminal, as shown in fig. 5, the wireless network device further includes:
a buffer unit 43, configured to buffer information sent by the terminal; wherein the information comprises: TCP messages, and/or messages with cache flags set in the cache.
The information with the cache flag may be information with a cache flag set at a designated data bit, where 0 may be used to indicate that no cache is required, and 1 may be used to indicate that cache is required.
Correspondingly, the wireless network device side also deletes the cached information periodically, and the method has the following two scenes:
scene one,
Specifically, as shown in fig. 6, the wireless network device further includes:
a timing unit 44 for setting a buffer timer; and deleting the cached information when the cache timer is detected to be expired.
The wireless network device sets a cache timer, and specifically includes: and setting the duration of the cache timer to be the duration of a retransmission timer, or to be longer than the duration of the retransmission timer.
The duration of the retransmission timer may be a duration set according to an actual situation.
Scene two,
After the information sent by the terminal is cached, the caching unit is further configured to receive an indication message sent by the terminal, and delete the cached information according to the indication message.
The indication information sent by the terminal may include an identification number of the cached information to be deleted.
The first sending unit is further configured to feed back a reply message for the TCP message retransmission request to the terminal side;
wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests.
Specifically, the first sending unit is further configured to check whether valid data to be retransmitted corresponding to the TCP message retransmission request is cached, and if so, carry an acknowledgement for the retransmission request in a reply message to the TCP message retransmission request; if not, the rejection of the retransmission request is carried in a reply message to the TCP message retransmission request.
That is, when the wireless network device side stores corresponding data, acknowledgement information is fed back to the terminal, and if the corresponding data is not stored, failure is fed back to the terminal, that is, information cannot be retransmitted.
Specifically, the first sending unit is further configured to at least carry a flag of information to be retransmitted in a reply message to the TCP message retransmission request.
The reason for the rejection of the retransmission request includes at least one of: the information has expired; the information is not present; information retransmission or transmission fails.
Therefore, by adopting the scheme, when the retransmission request of the terminal is received, the data retransmission processing can be executed according to the data stored by the terminal. Therefore, when the network data is stored in the wireless network equipment, the terminal can be prevented from retransmitting the network data, so that the data retransmission of an air interface is reduced; and the protocol does not need to be modified, so that the compatibility is ensured.
Example four,
An embodiment of the present invention provides a terminal, as shown in fig. 7, including:
a detecting unit 71, configured to detect that a TCP layer needs to retransmit a message;
a second sending unit 72, configured to send a TCP message retransmission request to the wireless network device.
Here, it should be noted that, when receiving a TCP message retransmission request sent from the terminal, the terminal may send the retransmission request to the wireless network device when detecting that its TCP layer needs to retransmit a message.
Specifically, the detecting unit is configured to determine that a TCP layer needs to retransmit a message if it is detected that a data retransmission timer of the TCP layer expires;
or, the detecting unit is used for detecting that the confirmation instructions of the preset times are continuously received.
The message retransmission request at least can carry mark information of data to be retransmitted;
wherein, the mark information of the data to be retransmitted comprises: internet Protocol (IP) layer, and/or Transmission Control Protocol (TCP) layer information, and/or Packet Data Convergence Protocol (PDCP) layer information;
specifically, the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
That is, when the terminal sends an information retransmission request, the terminal needs to carry at least an identification number or a number of information to be sent in the request.
It can be understood that, the processing that the wireless network device can retransmit data needs to be based on that the wireless network device has cached data information of the terminal in advance, and the following description is made with respect to the processing that the wireless network device obtains cached information:
the terminal further comprises: a second receiving unit 73, configured to send an indication message to the wireless network device through the second sending unit after receiving the information reception acknowledgement of the TCP layer, referring to fig. 3, in this embodiment, information interaction between the terminal, the wireless network device, and the server is provided, first, the terminal may detect whether the retransmission timer is overtime, and if the retransmission timer is overtime, send a retransmission request to the wireless network device; and when the wireless network equipment side stores corresponding retransmission data, the retransmission confirmation information is sent to the terminal and the data information is retransmitted to the server side.
Therefore, by adopting the scheme, when the retransmission request of the terminal is received, the data retransmission processing can be executed according to the data stored by the terminal. Therefore, when the network data is stored in the wireless network equipment, the terminal can be prevented from retransmitting the network data, so that the data retransmission of an air interface is reduced; and the protocol does not need to be modified, so that the compatibility is ensured.
The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for enabling a computer device (which may be a personal computer, a network device, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (22)
1. An information sending method applied to a wireless network device, the method comprising:
receiving a Transmission Control Protocol (TCP) message retransmission request sent by a terminal; the retransmission request carries mark information of information to be retransmitted;
based on the TCP message retransmission request, retransmitting the sent data message of the terminal;
or, retransmitting the data to be transmitted of the terminal;
or, the data message of the terminal is assembled, or split, or repackaged and then sent; the data message comprises a sent data message and/or data to be sent;
the method further comprises the following steps:
feeding back a reply message aiming at the TCP message retransmission request to the terminal side; wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests;
checking whether effective data to be retransmitted corresponding to the TCP message retransmission request is cached or not, and if so, carrying confirmation information of the retransmission request in a reply message aiming at the TCP message retransmission request; if not, carrying rejection information of the retransmission request in a reply message aiming at the TCP message retransmission request;
before receiving a TCP message retransmission request sent by a terminal, the method further comprises the following steps:
the wireless network equipment side caches the information sent by the terminal; wherein, the information sent by the terminal comprises: TCP messages, and/or messages with cache flags set.
2. The method according to claim 1, wherein the caching the information sent from the terminal comprises:
the wireless network equipment sets a buffer timer;
and deleting the cached information when the cache timer is detected to be expired.
3. The method according to claim 2, wherein the setting of the buffer timer by the wireless network device specifically includes:
and setting the duration of the cache timer to be the duration of a retransmission timer, or to be longer than the duration of the retransmission timer.
4. The method according to claim 1, wherein after the buffering the information sent from the terminal, the method further comprises:
and receiving an indication message sent by the terminal, and deleting the cached information according to the indication message.
5. The method according to claim 1, wherein the message retransmission request at least carries flag information of data to be retransmitted;
wherein, the mark information of the data to be retransmitted comprises: internet protocol IP layer, and/or TCP layer information, and/or packet data convergence protocol PDCP layer information;
the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
6. The method of claim 1, further comprising: and at least carrying a mark of information to be retransmitted in a reply message aiming at the TCP message retransmission request.
7. The method of claim 1, wherein the reason for the retransmission request rejection comprises at least one of:
the information has expired;
the information is not present;
information retransmission or transmission fails.
8. An information sending method applied to a terminal is characterized by comprising the following steps:
the terminal detects that a TCP layer needs to retransmit a message;
sending a TCP message retransmission request to the wireless network equipment; the retransmission request carries mark information of information to be retransmitted;
the terminal receives a reply message which is fed back by the wireless network equipment and aims at the TCP message retransmission request; wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests;
the confirmation information is carried in the reply message when the wireless network equipment checks and caches the effective data to be retransmitted corresponding to the TCP message retransmission request;
the rejection information is carried in the reply message when the wireless network equipment checks that the effective data to be retransmitted corresponding to the TCP message retransmission request is not cached;
before receiving a TCP message retransmission request sent by a terminal, the method further comprises the following steps:
the wireless network equipment side caches the information sent by the terminal; wherein, the information sent by the terminal comprises: TCP messages, and/or messages with cache flags set.
9. The method of claim 8, wherein detecting that a TCP layer needs to retransmit a message comprises:
if the data retransmission timer of the TCP layer is detected to be up, determining that the TCP layer needs to retransmit the message;
or when the continuous receiving of the confirmation instructions for the preset times is detected.
10. The method according to claim 8, wherein the message retransmission request at least carries flag information of data to be retransmitted; wherein, the flag information of the data to be retransmitted comprises: IP layer, and/or, TCP layer information, and/or PDCP layer information;
the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
11. The method of claim 8, further comprising:
and after receiving the information receiving confirmation of the TCP layer, the terminal sends an indication message to the wireless network equipment.
12. A wireless network device, the wireless network device comprising:
a first receiving unit, configured to receive a TCP message retransmission request sent by a terminal; the retransmission request carries mark information of information to be retransmitted;
a first sending unit, configured to resend a sent data message corresponding to the terminal based on the TCP message retransmission request; or, retransmitting the data to be transmitted corresponding to the terminal; or, the data message corresponding to the terminal is assembled, or split, or repackaged and then sent; the data message comprises a sent data message and/or data to be sent;
the first sending unit is further configured to feed back a reply message for the TCP message retransmission request to the terminal side; wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests;
the first sending unit is further configured to check whether valid data to be retransmitted corresponding to the TCP message retransmission request is cached, and if so, carry acknowledgement information for the retransmission request in a reply message to the TCP message retransmission request; if not, carrying rejection information of the retransmission request in a reply message aiming at the TCP message retransmission request;
wherein the wireless network device further comprises:
the wireless network equipment side caches information sent by a terminal before receiving a TCP message retransmission request sent by the terminal; wherein, the information sent by the terminal comprises: TCP messages, and/or messages with cache flags set.
13. The wireless network device of claim 12, further comprising:
the timing unit is used for setting a buffer timer; and deleting the cached information when the cache timer is detected to be expired.
14. The wireless network device according to claim 13, wherein the timing unit is specifically configured to set a duration of the buffer timer to a duration of a retransmission timer, or to be longer than the duration of the retransmission timer.
15. The wireless network device according to claim 12, wherein the caching unit is further configured to receive an indication message sent by the terminal, and delete the cached information according to the indication message.
16. The wireless network device according to claim 12, wherein the message retransmission request at least carries flag information of data to be retransmitted; wherein, the mark information of the data to be retransmitted comprises: IP layer, and/or, TCP layer information, and/or PDCP layer information;
the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
17. The wireless network device according to claim 12, wherein the first sending unit is further configured to carry at least a flag of information to be retransmitted in a reply message to a TCP message retransmission request.
18. The wireless network device of claim 12, wherein the reason for the retransmission request rejection comprises at least one of:
the information has expired;
the information is not present;
information retransmission or transmission fails.
19. A terminal, characterized in that the terminal comprises:
the detection unit is used for detecting that the TCP layer needs to retransmit the message;
a second sending unit, configured to send a TCP message retransmission request to the wireless network device; the retransmission request carries mark information of information to be retransmitted;
the second sending unit is further configured to receive a reply message, which is fed back by the wireless network device and is directed to the TCP message retransmission request; wherein, the reply message for the TCP message retransmission request at least comprises at least one of the following information:
acknowledgement information to the retransmission request;
rejection information of the retransmission request;
reason for rejection of retransmission requests;
the confirmation information is carried in the reply message when the wireless network equipment checks and caches the effective data to be retransmitted corresponding to the TCP message retransmission request;
the rejection information is carried in the reply message when the wireless network equipment checks that the effective data to be retransmitted corresponding to the TCP message retransmission request is not cached;
before a TCP message retransmission request sent by a terminal is received, the wireless network equipment side caches information sent by the terminal; wherein, the information sent by the terminal comprises: TCP messages, and/or messages with cache flags set.
20. The terminal according to claim 19, wherein the detecting unit is configured to determine that the TCP layer needs to retransmit the message if it is detected that a data retransmission timer of the TCP layer expires;
or, the detecting unit is used for detecting that the confirmation instructions of the preset times are continuously received.
21. The terminal according to claim 19, wherein the message retransmission request at least carries flag information of data to be retransmitted; wherein, the mark information of the data to be retransmitted comprises: IP layer, and/or, TCP layer information, and/or PDCP layer information;
the IP layer or TCP layer information includes: an IP packet number, and/or destination address, and/or port number; the PDCP layer information includes a PDCP number.
22. The terminal of claim 19, wherein the terminal further comprises:
and the second receiving unit is used for sending the indication message to the wireless network equipment through the second sending unit after receiving the information receiving confirmation of the TCP layer.
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| CN116455527A (en) * | 2023-06-16 | 2023-07-18 | 深圳华锐分布式技术股份有限公司 | Message retransmission method |
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