RU2298289C2 - Device and method for delivering packets in wireless networks with multiple retranslations - Google Patents

Device and method for delivering packets in wireless networks with multiple retranslations Download PDF

Info

Publication number
RU2298289C2
RU2298289C2 RU2003134626/09A RU2003134626A RU2298289C2 RU 2298289 C2 RU2298289 C2 RU 2298289C2 RU 2003134626/09 A RU2003134626/09 A RU 2003134626/09A RU 2003134626 A RU2003134626 A RU 2003134626A RU 2298289 C2 RU2298289 C2 RU 2298289C2
Authority
RU
Russia
Prior art keywords
intermediate node
node
data packet
intermediate
characterized
Prior art date
Application number
RU2003134626/09A
Other languages
Russian (ru)
Other versions
RU2003134626A (en
Inventor
Говиндараджан КРИШНАМУРТИ (US)
Говиндараджан КРИШНАМУРТИ
Йил ГУО (US)
Йил ГУО
Original Assignee
Нокиа, Инк.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US89578501A priority Critical
Priority to US09/895,785 priority
Application filed by Нокиа, Инк. filed Critical Нокиа, Инк.
Publication of RU2003134626A publication Critical patent/RU2003134626A/en
Application granted granted Critical
Publication of RU2298289C2 publication Critical patent/RU2298289C2/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. van Duuren system ; ARQ protocols
    • H04L1/1829Arrangements specific to the receiver end
    • H04L1/1835Buffer management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/22Alternate routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/28Route fault recovery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/14Flow control between communication endpoints using intermediate storage
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup

Abstract

FIELD: wireless communication systems, in particular, system and method for decreasing losses during data transfer, when damage occurs in communication line or unit.
SUBSTANCE: invention suggests system and method for decreasing data loss in wireless networks, as a result of failures in one or several wireless communication lines or due to damage of intermediate connecting unit, while wireless network contains at least one intermediate unit (15), having internal buffer (71) for continuous buffering of data, transferred from source unit (11) to destination unit (21), and sets up alternative route for bypassing damaged unit. Lost data packets are transferred again in certain position in response to receipt of error message, denoting damaged unit, or in response to repeatedly transferred request, as a result of data failures in wireless communication network, while intermediate units, without such internal buffering, execute transfer of requests and messages to higher positioned units with internal buffering.
EFFECT: decreased data loss.
5 cl, 8 dwg

Description

FIELD OF THE INVENTION

This invention relates to wireless communication systems, in particular to a system and method for reducing data transmission loss when damage occurs on a communication line or node.

State of the art

Wireless mobile relay networks with multiple retransmissions lack infrastructure certainty and, therefore, they experience frequent communication disruptions caused by node mobility and interference in wireless links. This is a problem in providing quality of service (QoS) in such networks. It is essential in this technical field to understand that typical direct relayings (retransmissions) can satisfy a limited time frame for timely packet delivery. In particular, the transmission of multimedia data is an example of an application in which the loss of data packets is unacceptable. Wireless networks with multiple retransmissions can be used, for example, for a user-oriented network in military applications, for taxi networks, for networks in meeting rooms and for emergency situations, including “911 calls”, which coordinate work between groups involved in search and rescue operations, or through a network, establish a connection between the ambulance operators at the scene of the accident and the doctors in the remote hospital.

Accordingly, the network topology of a wireless multiple-relay mobile communication network changes with time, where the network nodes are mobile, and where communication lines are established and then opened. Accidental damage to such wireless links is also more likely than wired networks because wireless links are more susceptible to interference. Therefore, routing is the most difficult problem in such networks, and the route from the source to the receiver (receiver) may not always guarantee the integrity of the communication session.

Several research attempts have been made to optimize routing protocols on multiple relay networks. These routing protocols optimize routes from the source node to the destination node in the presence of damage to the communication lines caused by the mobility of the node or the deterioration of the quality of the communication line due to interference in the transmission. Various criteria have been proposed for establishing communication routes using such optimization procedures. Some of these criteria include saving power for mobile systems and preventing congestion. At the same time, an enhancement to the TCP / UDP protocol was proposed to transmit packets on multiple relay networks.

Earlier research efforts in this area addressed routing problems without considering local retransmissions and packet delivery in accordance with priorities. The protocols discussed in this technical field depend on high-level protocols, such as TCP (Data Transmission Control Protocol), when solving problems with the loss of a data packet. Such approaches depend on direct retransmissions of lost packets and therefore are not applicable in order to guarantee QoS in a wireless network with multiple relayings in which communication line damage occurs frequently, which leads to an unacceptable delay. In addition, such approaches do not provide prioritization of packet delivery, because packets transmitted from the source to the receiver are processed the same way. This is not an optimal technique, since different microflows within a flow may have different delivery deadlines. Priority delivery in wired networks is known in the art, but timely delivery cannot be guaranteed in a wireless network due to the high probability of transmission errors.

An improved method is needed to ensure the timely delivery of packets with high quality of service in wireless multiple-relay mobile networks.

SUMMARY OF THE INVENTION

The present invention follows from the observation that data loss in wireless networks can be reduced by introducing buffering of data packets at the network level in the intermediate nodes on the transmission path, and local retransmission (relay) of the lost data packets. A wireless network formed using one or more intermediate nodes having internal buffers for continuous buffering of data transmitted from the source to the destination nodes establishes an alternative route that allows bypassing the damaged node and retransmits the lost data packets in response to the receipt of an error message. If the connector lacks an internal buffer, an error message is sent to the upstream node that stores buffered data packets that can recover the missing (lost) data.

Brief Description of the Drawings

The invention described below refers to the accompanying drawings, in which:

Figure 1 is a schematic representation of a wireless network, showing communication routes formed by the connecting nodes;

FIG. 2 is a block diagram describing data transmission using the wireless network of FIG. 1;

Figure 3 is a diagram of the communication node of Figure 1, showing an internal buffer for buffering data passing through the node;

FIG. 4 is a diagram of a connecting node of FIG. 1 showing buffers with a high, normal, and low transmission priority level for buffering data passing through a node; FIG.

FIG. 5 is a flowchart describing in more detail the process of transmitting undelivered data packets, as shown in the flowchart of FIG. 2;

6 is a schematic representation of a wireless network including a connecting node without internal buffering;

7 is a schematic representation of a wireless network including a damaged wireless communication line;

FIG. 8 is a block diagram describing data transmission using the wireless network of FIG.

Detailed description disclosing an embodiment of the invention

1 shows a simple wireless network 10 including a source node 11 (S) and a destination node 21 (D). A user of the wireless network 10 can transmit data by establishing an initial communication route between the source node 11 and the destination node 21 through a series of intermediate connecting nodes. The initial communication route may include, for illustration, sections of the route from the source node 11 to the first connecting node or intermediate node 13 (N 01 ), to the second intermediate node 15 (N 02 ), to the third intermediate node 17 (N 03 ), to the fourth the intermediate node 19 (N 04 ), and then to the destination node 21. The initial communication path can be established in a sequential combination: a wireless communication line 31 between the source node 11 and the first intermediate node 13, a wireless communication line 33 between the first intermediate node 13 and the second intermediate node 15, a wireless communication line 35 between the second intermediate node 15 and the third intermediate node 17, a wireless communication line 37 between the third intermediate node 17 and the fourth intermediate node 19 and a wireless communication line 39 between the fourth intermediate node 19 and the destination node 21.

During data transmission on the initial communication path, one or more intermediate nodes 13-19 may fail. Damage can occur, for example, due to the termination of the connection node (for example, equipment damage or power failure), due to the mobile node moving from the coverage area of the corresponding wireless communication line, or due to the unfavorable environment of the signal propagation (for example , precipitation, or storm) in the intermediate node involved. Accordingly, damage to the intermediate connecting node would cause the loss of one or more wireless communication lines 31-39 and, as a result, the initial communication node will be stopped due to loss or failure of data. The detection of a damaged assembly is well known in the art, and, for example, a mechanism based on the expiration of a timeout can be used.

The operation of the present method of the invention can be described by reference to the flowchart of FIG. 2, in which the initial communication route is established by the method known in the art in step 51, and the data packet stream 29 is configured to transmit in accordance with the selected protocol . Since the transmission of the data packet stream 29 to the destination node 21 is initiated via the initial communication path, each of the individual data packets in the data packet stream 29 sequentially passes through each of the intermediate nodes 13-19. At least one intermediate node in the original communication path is configured such that data packets are buffered for possible local retransmission using priority queuing, at step 57, as described in more detail below. If the original communication route remains intact, a node failure is detected, in decision block 59, the system prepares for the next transmission in operation 61, and receives data packets, when necessary, in operation 53.

If the intermediate node becomes unavailable, causing the break of one or more wireless communication lines 31-39 forming the initial communication route, an alternative connecting route is established, at step 63, using a method known in the art, and the remaining undelivered data packets are transmitted to the node 21 destination to complete the transmission of the stream 29 data packets at step 65. Here is an example: if the third intermediate node 17 becomes unavailable, wireless communication lines 35 and 37 are lost As shown in dotted lines in Figure 1, and the initial communication path is thereby interrupted. The second intermediate node 15 is notified (receives a message) of the damage and an alternative route bypassing the damaged third intermediate node 17, and finds the destination node 21. Such an alternative route may include, for example, a first alternative connecting node 23 (N 11 ) and a second alternative connecting node 25 (N 12 ).

A new wireless communication line 41 may be formed between the second intermediate node 15 and the first alternative connecting node 23, another new wireless communication line 43 may be formed between the first alternative connecting node 23 and the second alternative connecting node 25, and a new wireless communication line 45 may be formed between the second alternative connecting node 25 and the fourth intermediate node 19. The remaining undelivered data packets are then transmitted to the destination node 21 during operation 67, as described in more detail below. If the session transfer session was not completed in decision block 61 of FIG. 2, the system returns to operation 53, in which the next part of the data packet stream 29 is configured for transmission.

In a preferred embodiment, each (one or more) of the intermediate nodes 13-19 includes at least one internal buffer for continuously buffering data packets that pass through the corresponding connecting node. So, in the image of the second intermediate node 15, shown in more detail in FIG. 3, an internal buffer 71 is included in order to store a number of data packets. The size of the buffer 71 depends on the amount of backup memory available in the second intermediate node 15 for use under this function, and is determined by one or more factors, including application bandwidth and mobility speed. If sufficient memory is available, the size of the buffer 71 may be increased to operate with relatively higher data rates through the corresponding connection node and accommodate data packets arriving during the alternate route discovery period.

Buffer 71 may be implemented as a “software” buffer including a portion of the permanent memory of the second intermediate node 15, or may be implemented as a component of computer hardware, such as random access memory (RAM), in the second intermediate node 15. Software buffer can be implemented by reconfiguring the host kernel for buffering. That is, kernel reconfiguration allows buffering and transmission of priority packets and responding to packet retransmission requests. Such requests will be analyzed, the packet (s) will be placed in the buffer (s), and the packet (s) will be queued, as is known in the art. Otherwise, the second intermediate node 15 may include an optional processing device 79 for controlling the identification, storage and retransmission of data packets to the buffer 71. For example, the transmitted data packets 29a, 29b, ..., 29n enter the wireless communication line 33 and leave wireless communication line 35, the buffer 71 also buffers the newly transmitted data packets 29a, 29b ..., 29n, respectively, in the memory cells 71a, 71c and 71e. Buffer 71 may follow a first-come-first-out (store-type) protocol. Otherwise, buffering may be based on a single stream in which the data packets of a particular stream are replaced with pre-buffered data packets of the same stream.

In a preferred embodiment, each of the intermediate nodes 13-19 includes three internal buffers, which are shown as buffers 73-77, in the diagram of the fourth intermediate node 19 in figure 4, the buffers include a portion of the available memory or chip (element) with discrete memory. In this configuration, these three buffers 73-77 can be used to separate the received data packets 29a, 29b ..., 29n into different transmission priority classes, for example, providing high priority of buffer 73, normal priority of buffer 75 and low priority of buffer 77. Thus , data packets in a high priority buffer 73 may be queued for transmission in front of data packets in a low priority buffer 77, using a method known in the art.

FIG. 5 is a flowchart providing a more detailed description of the action taken in step 65 of FIG. 2. From step 63, an alternative route between the intermediate nodes 15 and 19 is established, as shown in FIG. 1, for example, by using the connecting nodes 15, 23, 25 and 19 in step 81. The data packets that now arrive on the alternative route are also buffered accordingly in alternative connecting nodes 23 and 25. The fourth intermediate node 19 is reconfigured with the establishment of an alternative transmission route. That is, data packets originally transmitted from the third intermediate node 17 to port 19a before the damage of the third intermediate node 17 are instead transmitted from the second alternative connector 25 to port 19b due to damage to the third intermediate node 17. Those skilled in the art can appreciate that the reconfigurable fourth intermediate node 19 is the first lower node on the new transmission route, which is located both in the original communication route and in the alternative cottages. When the fourth intermediate node 19 receives a routing message for the same stream (i.e., data packet stream 29), the fourth intermediate node 19 recognizes that the third intermediate node 17 is damaged and responds by notification to the second intermediate node 15 from which the data packets were received by the fourth intermediate node 19 in operation 83. This is to avoid double retransmission of data packets.

For example, as shown in FIG. 4, data packets 29a and 29n reached the fourth intermediate node 19, before the third intermediate node 17 was damaged. When the fourth intermediate node 19 recognizes the reconfiguration of the transmission route (i.e., the data packet from the second intermediate node 15 reaches port 19b and does not reach 19a), a notification is sent to the second intermediate node 15 that the data packets 29a and 29n have been received. The second intermediate node 15 then, trying to determine which data packets sent to the third intermediate node 17 were not received by the fourth intermediate node 19, and determines that the data packet 29b was not received by the fourth intermediate node 19.

At operation 85, data packets identified on the initial communication path as missing (missed) are received from the nearest node located upstream, and the receiving (final) node has corresponding buffered (stored in the buffer) data. Data packet 29b depicts the missing data packet, which was then recovered from buffer 71 in the second intermediate node 15 and transmitted to the fourth intermediate node 19 using an alternative route in step 87. The fourth intermediate node 19 transmits data packets 29a, 29b and 29n to the node 21 destination. If the applicable transmission protocol requires the ordered delivery of data packets, the data packet 29n is transmitted to the destination node 21 only after the transmission of the data packet 29a. Otherwise, if the applicable transmission protocol does not require ordered delivery, the data packet 29b, if buffering occurs in the high priority buffer 73, is transmitted before the data packets 29a and 29n that are buffered in the low priority buffer 77. Additionally, the remainder of the data packet stream 29 is transmitted via an alternative route in step 87. The action is then repeated in step 61 of FIG. 2.

In an alternative embodiment of the method according to the invention shown in FIG. 6, the wireless network 10 includes an unbuffered intermediate node 27, and no memory resource has been created for the internal buffer in the intermediate node 27. Therefore, the intermediate node 27 cannot buffer data packets passing along the transmission route. However, the intermediate node 27 is configured to transmit messages up the transmission direction, as well as the ability to search for alternative routes in case of damage to the node or communication line. If the intermediate node is damaged, as discussed above, for example, the third intermediate node 17 retransmits the message 49 received by the intermediate node 27. Since the intermediate node 27 cannot create missing data packets in case of damage to the node, the retransmitted message 49 is sent upward transmitting to the next intermediate node having internal buffers, for example, of the type of the first intermediate node 13. The missing data packet (s), such as the data packet 29b shown in the illustration, is obtained from any one of the buffers 73-77 and provides the requested node, shown here is the fourth intermediate node 19. If the missing data packet 29b is not present in any of the buffers 73-77 of the first intermediate node 13, the message is transmitted to the source node 11. In the network configuration, of which none of the intermediate nodes located between the damaged node and the source node 11 has internal buffers, missing data packets are received from the source node 11 and passed to the requesting node, as described above.

In yet another alternative embodiment, the quality of the wireless link 37 in the wireless network 10 is degraded or else it becomes unreliable due to interference in the transmission medium, for example, as indicated in FIG. 7. As a result, errors can be introduced in the transmission of the packet between the third intermediate node 17 and the fourth intermediate node 19. The corrective action can be described using an additional link to the flowchart of Fig. 8, on which the initial communication route is established at operation 91, and data packets from stream 29, data packets are received at intermediate nodes at step 93, and buffered at step 95.

If there is no receipt of retransmitted messages, in decision block 99, and if the wireless communication lines 31-39 remain operational, the system stops for transmission at step 101. When the wireless communication line 37 becomes unreliable and transmission errors occur, the retransmitted message is received and the third intermediate node 17 searches for internal buffers 73-77 for the corresponding data packet in operation 103. If the data packet is found in one of the buffers 73-77, in decision block 105, the third intermediate node 17 is aligned AET of the queue the data packet for priority retransmission (not shown) at step 97. This scheduled transmission is made in accordance with the data packet transfer priority as described above.

If the required data packet is not found in the internal buffers 73-77 of the third intermediate node 17, in decision block 105, the next upstream node is checked for the required data replacement in step 107. If the required data is found, in decision block 109, the data are transmitted at operation 97. If the required data is not found, in decision block 109, a request is made as to whether the source node 11 was reached in decision block 111. If the source node 11 has not been reached, operation continues at decision block 105. If the source node 11 has been reached, in decision block 111, and if the required data packet is not contained, in decision block 113, an additional error message may be sent to the data initiator in step 115, and the procedure for the next transmission session continues at operation 101. If the required data packet is available, in decision block 113, the data packet is planned and prioritized for transmission to destination node 21 at operation 97.

While the invention has been described with reference to embodiments, it should be understood that the present invention is in no way limited to the features of the devices and methods disclosed and / or shown in the drawings, but also includes any modifications or equivalents within the scope of the formula inventions.

Claims (26)

1. The communication method used in a wireless network to reduce data loss due to damage to the intermediate node during the transmission of data packets from the source node (11) to the destination node (21), which consists in establishing the initial communication route from the source node ( 11) to the destination node (21), wherein the initial communication route contains two or more intermediate nodes, transmit a data packet (29a) from the source node (11) through the first intermediate node (13) as soon as the connection between the source node (11) and the first intermediate node (13) it will be established, characterized in that the data packet (29a) is additionally stored in the first intermediate node (13) as a data packet (29a) that passes through the first intermediate node (13) through the initial communication path, damage to the second intermediate node (17) is detected in response to the transmission of the mentioned data packet, an alternative communication route is established to the destination node (21) without using a second intermediate node (17), bypass the second intermediate node (17) in response to the detection of damage to the second industrial daily node (17), wherein an alternative communication route originates from the first intermediate node (13), and a data packet (29a) stored in the first intermediate node (13) is retransmitted from the first intermediate node (13) to the destination node (21) through an alternative communication route.
2. The communication method according to claim 1, characterized in that at the said storage step, the data packet (29a) is buffered into one selected buffer from a plurality of buffers (71), the selected buffer corresponding to the priority class of the data packet (29a).
3. The communication method according to claim 1, characterized in that it further stores a buffered data packet (29a) in an alternative connection node (23) located on an alternative communication route.
4. The communication method according to claim 1, characterized in that the first intermediate node (13) is additionally notified of data packets received from the second intermediate node (17).
5. The communication method according to claim 1, characterized in that when transmitting the data packet (29a) via an alternative communication route, transmission is planned in accordance with priority classes in the queue.
6. The communication method according to claim 2, characterized in that when transmitting a data packet (29a) buffered in a first intermediate node (13), a data packet (29a) is transmitted that precedes the transmission of a second data packet (29b) buffered in a buffer with a lower priority class in the first intermediate node (13).
7. The communication method according to claim 2, characterized in that when transmitting a data packet (29a) buffered in the first intermediate node (13), a data packet (29a) is transmitted following the transmission of the second data packet (29b) buffered in the buffer with a higher priority class in the first intermediate node (13).
8. The communication method according to claim 4, characterized in that the said notification of the first intermediate node (13) is performed using the node on an alternative communication route.
9. The communication method according to claim 4, characterized in that the initial communication route includes a third intermediate node (15) located between the first and second intermediate nodes, the third intermediate node (15) containing means for relaying the message.
10. The communication method according to claim 1, characterized in that the alternative communication route comprises a third intermediate node (19) located on the initial communication route between the second intermediate node (17) and the destination node (21).
11. The communication method according to claim 10, characterized in that in addition to the third intermediate node (19), said alternative communication route is recognized in response to said transmission of a data packet buffered in the first intermediate node (13).
12. The communication method according to claim 11, characterized in that the first intermediate node (13) is additionally notified in the third intermediate node (13) of data packets received from the second intermediate node (17) in response to recognition of an alternative communication route in the third intermediate node (19).
13. The communication method according to claim 1, characterized in that upon detection of damage to the second intermediate node (17), a retransmitted message is received.
14. The communication method according to claim 1, characterized in that when establishing an alternative communication route, a communication route is established from the first intermediate node (13) to the destination node (21).
15. A wireless communication network used to transfer data from the source node (11) to the destination node (21) when establishing a connection between the source node (11) and the destination node (21), the initial communication route containing two or more intermediate nodes between the original node (11) and node (21) destination, characterized in that the first intermediate node (13) includes a buffer for storing at least a portion of the data that passed through the first intermediate node (13) through the initial communication path, over a period of time which exceeds the amount of time required for at least part of the data to pass through the first intermediate node (13) via the initial communication route.
16. The wireless communication network according to claim 15, wherein said buffer comprises buffers (71) of at least two different priority classes.
17. The wireless communication network according to claim 15, wherein the first intermediate node (13) further comprises a processor (79) for responding to a retransmission request (49).
18. The wireless communication network according to item 15, wherein the second intermediate node (27) includes means for relaying the message.
19. The wireless communication network according to claim 15, wherein the first intermediate node (13) further comprises a processor and memory for loading a kernel configured to buffer part of the data passing through the first intermediate node (13).
20. The communication method used to reduce data loss due to damage to the wireless communication line between the source node (11) and the destination node (21), which consists in establishing the first communication route from the source node (11) to the node (21) destination, and the first communication path contains at least a first intermediate node (13), when a connection is established between the source node (11) and the destination node (21) transmit a data packet from the source node (11) through the first intermediate node (13) through the first communication route, characterized in that further storing the data packet in the first intermediate node (13) as a data packet transmitted on the first communication path, receiving the retransmitted message (49) in the first intermediate node (13) requesting the data packet (29b) identified as missing, and retransmit a data packet (29b) stored in the first intermediate node (13) from the first intermediate node (13) to the destination node (21) by means of a second communication route in response to receiving a retransmitted message (49), the second communication route coming from the first about interstitial node (13).
21. The communication method according to claim 20, characterized in that it is further determined that the stored data packet in the first intermediate node corresponds to a data packet (29b) identified as missing.
22. The communication method according to claim 20, characterized in that, with said storage, a data packet is buffered in one selected buffer from a plurality of local buffers, the selected local buffer corresponding to the priority class of the data packet.
23. The communication method according to claim 20, characterized in that they additionally receive a retransmitted message in the second intermediate node (27) from at least one other intermediate node and the destination node and relay the retransmitted message from the second intermediate node to the first intermediate node ( 13).
24. The communication method according to claim 23, characterized in that it further checks the local buffer in the second intermediate node (27) for the data packet identified as missed in the retransmitted message and determines that the data packet identified as missed is not detected in local buffer of the second intermediate node (27).
25. An intermediate node in a wireless communication network, comprising a processor, a plurality of storage buffers, and a memory for storing computer-readable instructions that, when executed by the processor, enable the intermediate node to perform the steps of receiving a data packet when establishing a connection between the source node and the destination node, storing a data packet in one or more buffers from a plurality of storage buffers for a predetermined period of time, the predetermined period of time exceeding the period of time required dimy for passing the data packet through an intermediate node receiving the retransmitted message requesting the data packet identified as missing data and transmitting the packet stored in said buffer storage in response to receiving the retransmitted message.
26. A computer-readable storage medium storing computer-readable instructions that, when executed by a processor, enable the first intermediate node in the wireless communication network to execute a method that receives a data packet when establishing a connection between the source and destination nodes, stores the data packet in a buffer during a predetermined period of time, and the predetermined period of time exceeds the period of time necessary for the data packet to pass through the first intermediate node give a data packet to the second intermediate node, detect damage to the second intermediate node in response to the transmission of the data packet, establish an alternative communication route originating from the first intermediate node to the destination node bypassing the second intermediate node in response to the damage detection of the second intermediate node, and repeatedly transmitting a data packet stored in the first intermediate node from the first intermediate node via an alternative communication route.
RU2003134626/09A 2001-06-30 2002-06-26 Device and method for delivering packets in wireless networks with multiple retranslations RU2298289C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US89578501A true 2001-06-30 2001-06-30
US09/895,785 2001-06-30

Publications (2)

Publication Number Publication Date
RU2003134626A RU2003134626A (en) 2005-04-27
RU2298289C2 true RU2298289C2 (en) 2007-04-27

Family

ID=25405094

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2003134626/09A RU2298289C2 (en) 2001-06-30 2002-06-26 Device and method for delivering packets in wireless networks with multiple retranslations

Country Status (8)

Country Link
EP (1) EP1415424A4 (en)
JP (2) JP2004537206A (en)
CN (1) CN100411327C (en)
AU (1) AU2002311547B2 (en)
CA (1) CA2449532A1 (en)
MX (1) MXPA03010849A (en)
RU (1) RU2298289C2 (en)
WO (1) WO2003005629A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2496263C2 (en) * 2009-03-17 2013-10-20 Хуавэй Текнолоджиз Ко., Лтд. Method, apparatus and system for sending data packet
RU2610697C1 (en) * 2015-12-24 2017-02-14 Федеральное государственное унитарное предприятие "18 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации Method and device for retransmitting data via user datagram protocol

Families Citing this family (158)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6717927B2 (en) 2002-04-05 2004-04-06 Interdigital Technology Corporation System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change
US7706405B2 (en) 2002-09-12 2010-04-27 Interdigital Technology Corporation System for efficient recovery of Node-B buffered data following MAC layer reset
KR20050114654A (en) 2003-03-13 2005-12-06 소니 가부시끼 가이샤 Radio ad hoc communication system, terminal, processing method in the terminal, and program causing the terminal to execute the method
JP4539231B2 (en) * 2004-08-24 2010-09-08 Kddi株式会社 Communication method and base station using automatic retransmission control in multi-hop communication
JP2006115354A (en) * 2004-10-15 2006-04-27 Ntt Docomo Inc Mobile terminal, controller and mobile communication method
TW200614759A (en) * 2004-10-21 2006-05-01 Iwics Inc Implied acknowledgement data transport protocol for a multi-station network
WO2006085270A1 (en) * 2005-02-14 2006-08-17 Koninklijke Philips Electronics N.V. Fault tolerant communication system
JP4520350B2 (en) * 2005-03-31 2010-08-04 株式会社国際電気通信基礎技術研究所 Wireless device
CN1941734A (en) * 2005-09-26 2007-04-04 华为技术有限公司 Method and system for controlling fault based on transfer station
DE102006004025A1 (en) 2006-01-27 2007-08-09 Siemens Ag Method for transmitting a message, network node and network
JP2007318497A (en) * 2006-05-26 2007-12-06 Oki Electric Ind Co Ltd Wireless access controller and control method, wireless unit, and network
CN102082651B (en) 2006-06-22 2013-01-30 华为技术有限公司 Method for realizing mixed automatic retransmission in relay station-including communication system
CN101047431B (en) 2006-06-22 2011-02-02 华为技术有限公司 Method for implementing mixed automatic retransmit in communication system containing repeater station
JP2008072521A (en) * 2006-09-14 2008-03-27 Fujitsu Ltd Equipment, method and program for communication
CN100438456C (en) 2006-10-20 2008-11-26 北京邮电大学 Hop-by-hop transferred distributed flow media transmission performance test method and device
CN101174930B (en) 2006-11-03 2012-01-04 北京邮电大学 Method and apparatus for implementing automatic retransmission request in relay system
CN101291430B (en) 2007-04-19 2012-02-29 株式会社Ntt都科摩 Video transmission method and apparatus in wireless network
CN101340267B (en) * 2007-07-03 2015-05-13 财团法人工业技术研究院 Transmission control methods and devices for communication systems
US8201041B2 (en) 2007-07-03 2012-06-12 Industrial Technology Research Institute Transmission control methods and devices for communication systems
CN101420335B (en) 2007-10-26 2011-09-14 华为技术有限公司 Failure detection/processing method and apparatus for peer-to-peer network node
KR100934856B1 (en) 2007-12-28 2009-12-31 엘에스산전 주식회사 Between nodes in a wireless network environment, a data transmission method
CN101505211A (en) * 2008-02-04 2009-08-12 华为技术有限公司 Method, system and multicast network for enhancing reliability of multicast
CN101562507B (en) 2008-04-14 2013-05-01 中兴通讯股份有限公司 The data transmission method
WO2009138133A1 (en) 2008-05-12 2009-11-19 Telefonaktiebolaget Lm Ericsson (Publ) Re-routing traffic in a communications network
EP2335383B1 (en) * 2008-10-16 2012-04-18 Telefonaktiebolaget L M Ericsson (PUBL) Network nodes
KR101037684B1 (en) * 2009-04-01 2011-05-30 울산대학교 산학협력단 Data receiving method in wireless communication system and wireless communication system using the same
US9282027B1 (en) * 2010-03-31 2016-03-08 Amazon Technologies, Inc. Managing use of alternative intermediate destination computing nodes for provided computer networks
RU2461136C2 (en) * 2010-04-30 2012-09-10 Виктор Николаевич Куделя Method for guaranteed delivery of data units in switched lossy network
CN102300234B (en) * 2010-06-25 2014-05-07 上海无线通信研究中心 Novel multi-hop routing transmission method
EP2701349B1 (en) 2011-08-02 2018-11-07 Huawei Technologies Co., Ltd. Method and apparatus for managing diameter routing
CN102340391B (en) * 2011-11-14 2014-12-03 电子科技大学 Segmented ARQ (automatic repeat request) automatic retransmission method
CN102447632A (en) * 2011-12-30 2012-05-09 四川川大智胜软件股份有限公司 Network transmission method having data error tolerance capability
WO2013152097A1 (en) 2012-04-03 2013-10-10 Nevion Usa, Inc. Signal protection
US9113347B2 (en) 2012-12-05 2015-08-18 At&T Intellectual Property I, Lp Backhaul link for distributed antenna system
WO2014061831A1 (en) * 2013-01-07 2014-04-24 三菱電機株式会社 Data delivery system, root wireless device, and wireless device
CN103117955B (en) * 2013-01-16 2016-08-03 华为技术有限公司 Method for message transmission and device, system
KR101509627B1 (en) 2013-02-20 2015-04-07 홍익대학교 산학협력단 System for recovering route in wireless ad-hoc networks and route recovering method thereof
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9525524B2 (en) 2013-05-31 2016-12-20 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9722916B2 (en) * 2013-09-30 2017-08-01 Cisco Technology, Inc. Data-plane driven fast protection mechanism for MPLS pseudowire services
US8897697B1 (en) 2013-11-06 2014-11-25 At&T Intellectual Property I, Lp Millimeter-wave surface-wave communications
CN104038364B (en) * 2013-12-31 2015-09-30 华为技术有限公司 The method of fault-tolerant distributed stream processing system, the system nodes and
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9615269B2 (en) 2014-10-02 2017-04-04 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9973299B2 (en) 2014-10-14 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9762289B2 (en) 2014-10-14 2017-09-12 At&T Intellectual Property I, L.P. Method and apparatus for transmitting or receiving signals in a transportation system
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9627768B2 (en) 2014-10-21 2017-04-18 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9520945B2 (en) 2014-10-21 2016-12-13 At&T Intellectual Property I, L.P. Apparatus for providing communication services and methods thereof
US9312919B1 (en) 2014-10-21 2016-04-12 At&T Intellectual Property I, Lp Transmission device with impairment compensation and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9577306B2 (en) 2014-10-21 2017-02-21 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9653770B2 (en) 2014-10-21 2017-05-16 At&T Intellectual Property I, L.P. Guided wave coupler, coupling module and methods for use therewith
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US9544006B2 (en) 2014-11-20 2017-01-10 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US10144036B2 (en) 2015-01-30 2018-12-04 At&T Intellectual Property I, L.P. Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9948354B2 (en) 2015-04-28 2018-04-17 At&T Intellectual Property I, L.P. Magnetic coupling device with reflective plate and methods for use therewith
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9490869B1 (en) 2015-05-14 2016-11-08 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US10103801B2 (en) 2015-06-03 2018-10-16 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9608692B2 (en) 2015-06-11 2017-03-28 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9667317B2 (en) 2015-06-15 2017-05-30 At&T Intellectual Property I, L.P. Method and apparatus for providing security using network traffic adjustments
US9509415B1 (en) 2015-06-25 2016-11-29 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9640850B2 (en) 2015-06-25 2017-05-02 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US9722318B2 (en) 2015-07-14 2017-08-01 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US10170840B2 (en) 2015-07-14 2019-01-01 At&T Intellectual Property I, L.P. Apparatus and methods for sending or receiving electromagnetic signals
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US10033108B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US10320586B2 (en) 2015-07-14 2019-06-11 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US10341142B2 (en) 2015-07-14 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor
US9628116B2 (en) 2015-07-14 2017-04-18 At&T Intellectual Property I, L.P. Apparatus and methods for transmitting wireless signals
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US9793951B2 (en) 2015-07-15 2017-10-17 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9608740B2 (en) 2015-07-15 2017-03-28 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9461706B1 (en) 2015-07-31 2016-10-04 At&T Intellectual Property I, Lp Method and apparatus for exchanging communication signals
US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US10009063B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal
US10079661B2 (en) 2015-09-16 2018-09-18 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a clock reference
US10136434B2 (en) 2015-09-16 2018-11-20 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
US9912419B1 (en) 2016-08-24 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for managing a fault in a distributed antenna system
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US10291311B2 (en) 2016-09-09 2019-05-14 At&T Intellectual Property I, L.P. Method and apparatus for mitigating a fault in a distributed antenna system
US10340600B2 (en) 2016-10-18 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via plural waveguide systems
US10135146B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via circuits
US10135147B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via an antenna
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US9991580B2 (en) 2016-10-21 2018-06-05 At&T Intellectual Property I, L.P. Launcher and coupling system for guided wave mode cancellation
US9876605B1 (en) 2016-10-21 2018-01-23 At&T Intellectual Property I, L.P. Launcher and coupling system to support desired guided wave mode
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058105A (en) * 1990-04-04 1991-10-15 At&T Bell Laboratories Network alternate routing arrangement
JPH0752437B2 (en) * 1991-08-07 1995-06-05 インターナショナル・ビジネス・マシーンズ・コーポレイション Multinode network to track the progress of a message
US5652751A (en) * 1996-03-26 1997-07-29 Hazeltine Corporation Architecture for mobile radio networks with dynamically changing topology using virtual subnets
US6842430B1 (en) * 1996-10-16 2005-01-11 Koninklijke Philips Electronics N.V. Method for configuring and routing data within a wireless multihop network and a wireless network for implementing the same
US6181704B1 (en) 1997-08-29 2001-01-30 Intel Corporation Method and apparatus for input/output link retry, failure and recovery in a computer network
US6366584B1 (en) * 1999-02-06 2002-04-02 Triton Network Systems, Inc. Commercial network based on point to point radios

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2496263C2 (en) * 2009-03-17 2013-10-20 Хуавэй Текнолоджиз Ко., Лтд. Method, apparatus and system for sending data packet
US8724587B2 (en) 2009-03-17 2014-05-13 Huawei Technologies Co., Ltd. Method, apparatus, and system for sending a data packet
RU2610697C1 (en) * 2015-12-24 2017-02-14 Федеральное государственное унитарное предприятие "18 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации Method and device for retransmitting data via user datagram protocol

Also Published As

Publication number Publication date
CN1541466A (en) 2004-10-27
RU2003134626A (en) 2005-04-27
EP1415424A4 (en) 2006-06-07
WO2003005629A1 (en) 2003-01-16
MXPA03010849A (en) 2004-11-22
CN100411327C (en) 2008-08-13
JP4392033B2 (en) 2009-12-24
JP2007251991A (en) 2007-09-27
JP2004537206A (en) 2004-12-09
AU2002311547B2 (en) 2006-04-27
EP1415424A1 (en) 2004-05-06
CA2449532A1 (en) 2003-01-16

Similar Documents

Publication Publication Date Title
CA1266318A (en) High-speed packet-switched communications system with end-to-end flow control and retransmission
EP0829986B1 (en) System for improving data throughput of a TCP/IP Network connection with slow return channel
EP1323264B1 (en) Mechanism for completing messages in memory
US9622066B2 (en) System for permitting control of the purging of a node B by the serving radio network controller
US7801995B2 (en) Cognitive network
EP1175064B1 (en) Method and system for improving network performance using a performance enhancing proxy
US7969876B2 (en) Method of determining path maximum transmission unit
KR100785293B1 (en) System and Method for TCP Congestion Control Using Multiple TCP ACKs
CN1233194C (en) Method and apparatus for input/output link retry, failure and recovery in a computer network
US5751719A (en) Method and system for data transfer in the presence of disconnects
EP0609654B1 (en) Burst band-width reservation method in an asynchronous transfer mode (ATM) network
US20070198737A1 (en) Reliable Delivery of Multi-Cast Conferencing Data
DE69837513T2 (en) Device for secure communication via radio and cable networks using transport layer connections
JP2006236391A (en) System and method for positive response of message reception on communication network of packet base
JP2008546328A (en) Scheduled packet delivery system and method
US20050243722A1 (en) Method and apparatus for group communication with end-to-end reliability
US20020186660A1 (en) Adaptive control of data packet size in networks
JP3604615B2 (en) Communication device, relay apparatus and communication control method
AU644800B2 (en) Data communication method and system
JP4164365B2 (en) Technology for improving TCP performance over a wireless interface by providing a dual proxy device
DE60031263T2 (en) Packaging procedure for log data units
JP4188774B2 (en) Frame transmission / reception system, frame transmission apparatus, frame reception apparatus, and frame transmission / reception method
US6091733A (en) Communication device using communication protocol including transport layer and communication method using communication protocol including transport layer
US8451727B2 (en) Apparatus and method for controlling congestion occurrence in a communication network
US6876639B1 (en) Transmission control protocol handoff notification system and method

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20110627