WO2016163989A1 - Procédé et appareil de relais de données et d'admission instantanée - Google Patents

Procédé et appareil de relais de données et d'admission instantanée Download PDF

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Publication number
WO2016163989A1
WO2016163989A1 PCT/US2015/024606 US2015024606W WO2016163989A1 WO 2016163989 A1 WO2016163989 A1 WO 2016163989A1 US 2015024606 W US2015024606 W US 2015024606W WO 2016163989 A1 WO2016163989 A1 WO 2016163989A1
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Prior art keywords
node
data
phy
network
destination
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PCT/US2015/024606
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English (en)
Inventor
Changwen Liu
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Entropic Communications, Inc.
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Priority to PCT/US2015/024606 priority Critical patent/WO2016163989A1/fr
Publication of WO2016163989A1 publication Critical patent/WO2016163989A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof

Definitions

  • the disclosed method and apparatus relates to networking and more particularly to means for quickly establishing communications between nodes of a MoCA network.
  • LAN local area network
  • MoCA Multimedia over Coax Alliance
  • FIG. 1 is a simplified illustration of a home 100 that has a MoCA network 106.
  • the MoCA network 106 has four nodes 1 10, 1 12, 1 14, 1 16.
  • the nodes of the network 106 are all coupled to a coaxial cable that serves as a medium 128.
  • the medium 128 within a home 100 is coupled to all four of the nodes 1 10, 1 12, 1 14, 1 16 of the network.
  • the Admission Process is well defined and requires several steps to be completed before the NN can access the data plane (i.e., send or receive content to or from another node in the network).
  • FIG. 2 is a simplified illustration of a MoCA network 106 in which a NN 201 is implementing an Admission Process to form an expanded network 203.
  • the expanded network 203 will include each of the nodes 110, 112, 1 14, 1 16 of the network 106 plus the NN 201.
  • FIG. 3 is a flow diagram of the Admission Process.
  • the network will reside in one of five Link Control States. Initially, the NC 1 10 receives an Admission Request 301 from the NN 201. In response, the NC 1 10 moves the network 106 into a "Begin Node Admission" Link Control State. In the Begin Node Admission Link Control State, the NC 110 sends an Admission Response message 303.
  • the NN 201 and each additional Existing Node (EN) 305 in the network sends a Link Acknowledgement message 307.
  • the NN can send NN Probe Transmission Requests 309 for slots (i.e., time allocated by the NC 1 10) in which probes 31 1 are to be transmitted between the NC 110 and the NN 201.
  • Probes 311 are then sent between the NN 201 and the NC 1 10 in response to the NN's requests 309.
  • the NC 1 10 can send NC Probe Transmission Requests 313 to the NN 201.
  • the NC 1 10 responds by sending probes 315 to the NN 201 and scheduling probes 315 to be sent by the NN 201 to the NC 1 10.
  • EVM Error Vector Magnitude
  • the NC 1 10 After fulfilling all of the NC's probe requests, Error Vector Magnitude (EVM) Probes 317 are sent from the NC 1 10 to the NN 201. In response, the NN 201 sends an EVM Probe Report 319 to the NC 1 10. Once the NC 1 10 and the NN 201 have exchanged the probes 311, 315, 319, the NC 1 10 generates a Greatest Common Denominator (GCD) EVM probe distribution report 321. The NC 1 10 sends the new GCD EVM distribution report 321 to the NN 201. Upon successfully receiving the report 321, the NN 201 responds to the NC 201 by sending a Link Acknowledgement message 323.
  • GCD Greatest Common Denominator
  • the NC 1 10 If the NC 110 has up to date information regarding the links between the NC and each of the ENs 305 in the network, the NC 1 10 also sends the same new GCD EVM probe distribution report 325 to each of the ENs 305 of the network. Each EN 305 will respond by sending a Link Acknowledgement message 327.
  • MAPs Media Access Plans
  • the NC 1 10 can be sent by the NC 1 10 using the new GCD MAP PHY profile.
  • the NN 201 still needs to exchange probes with each of the ENs 305 to characterize the links between the NN and each EN 305 in the network.
  • FIG. 4 is a flow diagram of the messages that are sent by the NN 201, NC 110 and the ENs 305 to characterize the links between the NN 201 and each of the ENs 305 to complete the Admission Process.
  • the NN 201 cannot access the data plane (i.e., send any content over the network).
  • the NC 1 10 moves the network into a "NN TX Probe State" by sending a MAP 401 in which the LINK_STATE is set to NN TX Probe State to the NN 201 and all ENs 305 on the network.
  • the NN sends an initial power control message 403 to the NC 1 10 and to each EN 305.
  • each EN 305 sends an initial power control response 405 to the NN 201.
  • the NC 110 also sends an initial power control response 407 to the NN 201.
  • the NN 201 sends an initial power control acknowledgement 409, 411 to each EN 305 and to the NC 1 10. Once the power levels are established, the NN 201 sends EVM probes 413 to each of the nodes 110, 305.
  • the NN 201 sends an EVM Probes Report Request to the NC 110.
  • the NC 110 responds to the report request 415 by broadcasting an EVM Probes Report Request 417 to the ENs 305 in the network.
  • the NC 110 sends an EVM Probe Report 419 to the NN 201.
  • the NC 1 10 receives an EVM Probe Report 421 from each EN 305.
  • the NC 110 sends a copy of each EVM Probe Report 423 to the NN 201.
  • the NN 201, NC 1 10 and each EN 305 will go through a similar process whereby the characteristics of the link from each EN 305 to the NN 201 is determined by the NN 201 receiving probes one at a time from each EN 305, generating an EVM probe report for each EN 305 and sending the report to the NC 1 10.
  • the NC 1 10 then sends the report to each EN 305.
  • each EN 305 completes the exchange of probes, it sends a Reservation Request (RR) message to the NC (not shown) including a
  • NEXT_LINK_STATE field that is set to "New Node GCD Distribution State" to complete the NN RX Probe State.
  • each node In the New Node GCD Distribution State, each node, NN 201 or EN 305, generates a GCD Probe Distribution Report and distributes the report to each EN 305 and the NN via NC relay. As each node receives a relayed GCD Probe Distribution Report from another node, the receiving node will send an acknowledgement to the sending node. When a node has received an acknowledgement from the NN and each of the ENs in the network, it sends a RR reporting "Begin PHY Profile State".
  • the NC 110 When the NN and all of the EN's have reported such an RR, the NC 110 will move the network to the Begin PHY Profile State at which time, each of the nodes, ENs 305, NC 110 and NN 201 will activate and begin using the newly computed PHY profiles. The NC 110 can then move the network to the Steady State Link Control State and the Admission Procedure is complete.
  • the Admission Procedure including the large number of probe exchanges that must take place and the generation and distribution of the reports generated as a consequence of the probes, take a relatively long time. In addition to an NN 201 being added to the network, this process also takes place whenever a node put in a reduced power state also rejoins the network.
  • NN new node
  • ENs Existing Nodes
  • a NN sends an Admission Request to a Network Coordinator (NC) and receives an Admission response in return.
  • the NN receives probes from the NC.
  • the NN uses the probes to generate a probe report and send the report to the NC.
  • the NC generates a new GCD (Greatest Common Denominator) Probe Distribution Report out of the received probe report from the NN and sends it to the NN.
  • the NC sends a New GCD Probe Distribution Report to each EN.
  • the NC then starts sending Media Access Plans (MAPs) over the network using the new GCD PHY profile indicated by the New GCD Probe Distribution Report.
  • the NN sends probes to the NC and receives a Probe report from the NC.
  • the NC will then move the network to a Steady State Link Control State, completing the Admission Process.
  • MAPs Media Access Plans
  • the NC can move the network into a Link Control State, commonly referred to as "Steady State".
  • the NN can communicate with the NC over the data plane once the network is in the Steady State in both directions.
  • the NN cannot yet communicate directly with other ENs for which there is no PHY profile characterizing the links between the NN and the EN.
  • the NN can send content to the NC that is intended to be communicated from the NN to an intended receiving EN.
  • a newly admitted EN can make a reservation request to send content to an intended receiving EN for which the newly admitted EN does not yet have a PHY profile. It will be understood throughout the disclosure that "newly" does not indicate that most recently. However, the newly admitted EN may in some cases be the most recently admitted node.
  • the status of a node transitions from NN to EN when the Admission Procedure is complete.
  • the receiving EN may have joined the network either earlier or later than the newly admitted EN.
  • the NC will respond by granting the RR for a communication between the newly admitted node and the NC rather than the intended receiving EN.
  • the newly admitted node will then send the content to the NC.
  • the NC can then send/relay the content to the intended receiving EN.
  • a confirmation is sent from the intended receiving EN to the NC.
  • the NC will then send a corresponding confirmation to the newly admitted NN indicating safe receipt of the content by the intended receiving EN.
  • the NC will perform a Link Maintenance Operation (LMO) during which probes are sent from the newly admitted EN to each of the other nodes in the network, including each of the ENs for which the newly admitted EN does not yet have a PHY profile, and the probe reports are sent from these receiving nodes to the newly admitted EN.
  • LMO Link Maintenance Operation
  • the NC can grant the RR by the newly admitted EN to send content to the intended receiving EN directly without NC relay.
  • the NC can evaluate an RR sent by any source EN.
  • the NC can determine from the evaluation that it would be more efficient for the source EN to send the content to the NC and then the NC to send/relay the content to the destination EN. This may be determined to be true even if there is a current PHY profile between the source EN and destination EN.
  • FIG. 1 is a simplified illustration of a home having a MoCA a network.
  • FIG. 2 is a simplified illustration of a MoCA network in which a NN is implementing an Admission Process to form an expanded network.
  • FIG. 3 is a flow diagram of the Admission Process.
  • FIG. 4 is a flow diagram of the messages that are sent by the NN, NC and the ENs to characterize the links between the NN and each of the ENs to complete the Admission Process.
  • FIG. 5 a logical block diagram of a node of a network, in accordance with the
  • FIG. 6 is a simplified flowchart of the process implemented by a node 500 in the role of a New Node (NN) when power is first applied.
  • FIG. 7 is a process flow diagram showing the messages that are communicated as part of the Admission Process in accordance with one embodiment of the disclosed method and apparatus.
  • FIG. 8 is a process flow diagram showing the process used to send information from a newly admitted EN 801 to an intended destination EN.
  • FIG. 9 is a process flow diagram of yet another embodiment, in which it is possible for the NC to determine that a route over a direct link between in Ingress Node and an Egress Node 904 is more inefficient than a route through the NC.
  • FIG. 10 is an illustration of an Ingress Node 903, an Egress Node 904 and an NC 907 within a network 1000.
  • FIG. 1 1 is a simplified block diagram of the hardware used to implement a network node 500 in accordance with one embodiment of the disclosed method and apparatus.
  • FIG. 5 is a logical block diagram of a node 500 of a network, in accordance with the presently disclosed method and apparatus.
  • Nodes may function in a manner that is appropriate to the role that node is currently playing.
  • a node 500 can assume the role of the Network Coordinator (NC), a New Node (NN) or an Existing Node (EN).
  • NC Network Coordinator
  • NN New Node
  • EN Existing Node
  • the node 500 essentially uses the well-known seven layer Open System
  • the node 500 comprises a physical layer 502 which is responsible for controlling the physical interface to the medium, including transmitting signals over the medium (e.g., coaxial cable).
  • a Data Link Layer (DLL) 504 includes several sub-layers, such as an Ethernet Convergence Layer (ECL) 506, Link Layer Control (LLC) 508, Media Access Control (MAC) 510, the details of which are not necessary for an understanding of the presently disclosed method and apparatus and are well-known to those skilled in the art.
  • the DLL 504 is responsible for controlling the high layer operation of the physical layer and determining the timing and management of messages to be transmitted and received. Accordingly, the DLL 504 works with the physical layer 502 to perform the functions noted in FIGs. 3-7.
  • the DLL 504 is implemented by the execution of software running on at least one processor.
  • FIG. 6 is a simplified flowchart of the process implemented by a node 500 in the role of a New Node (NN) when power is first applied. This process is also followed by a node that was previously admitted, but is rejoining the network after entering a reduced power state.
  • the network is formed when a NN is connected to the medium (typically a coaxial cable installed in a home or other facility) and the NN is "Powered up" (STEP 601). After initialization/power up, the NN performs a network search of each of its supported bands (i.e., the frequencies that the node is capable of using to communicate with other nodes).
  • the NN will perform the network search procedure to determine whether any other node is already operating on the medium in a supported band. The NN does this by listening for a Beacon message (hereafter, referred to simply as a Beacon for the sake of brevity) (STEP 603). If the NN fails to detect a Beacon, the NN 601 will form a new network and begin transmitting Beacons if its own while waiting for another NN to attempt to join its network (STEP 605).
  • a Beacon message hereafter, referred to simply as a Beacon for the sake of brevity
  • networks formed on the medium can have network privacy enabled. If privacy is enabled for the network, the node needs to have the password. If an NC is already operating on the medium on which the NN is listening, the NC sends a Beacon. The NC continues to send Beacons and carries on with normal operation of the network. When the NN detects the Beacon from the NC (STEP 603), the NN determines from information contained within the Beacon when to send a Discovery Request message. The NN then sends a Discovery Request message to the NC (STEP 607).
  • the NC In response to the Discovery Request message, the NC sends a Discovery Response message.
  • Information conveyed in the pre-admission discovery messages is not relevant to the presently disclosed method and apparatus and is known to those skilled in the art.
  • the NN After having exchanged the Discovery Request message and receiving a Discovery Response message (STEP 609), the NN will transmit an Admission Request message (STEP 61 1) during an Admission Control Frame (ACF) Slot scheduled by the NC in response to receiving the Discovery Response message.
  • ACF Admission Control Frame
  • the NC Upon receipt of the Admission Request message, the NC prepares and transmits an Admission Response message.
  • the Admission Response message includes information regarding all of the ENs within the network.
  • the NN After receipt of the Admission Response message, the NN will begin the process of exchanging probes with the NC to build a characterization of the paths between the NN and the NC (STEP 615).
  • the process of exchanging probes to characterize a MoCA network is well known to those skilled in the art.
  • the NN admission is complete STEP (617).
  • the network advances to Steady State.
  • the Node is no longer referred to as a NN, but rather is then referred to as a "newly admitted EN”.
  • the status of a node transitions from NN to EN when the Admission Procedure is complete.
  • FIG. 7 is a process flow diagram showing the messages that are communicated as part of the Admission Process in accordance with one embodiment of the disclosed method and apparatus.
  • the Admission Process follows the messaging sequence performed in a conventional MoCA 2.0 Admission Process. However, in one embodiment of the disclosed method and apparatus, the Admission Process ends after the NC 701 sends an EVM Probe Report 703.
  • a NN 705 starts the Admission Process by sending an Admission Request message 707 to an NC 701.
  • the NN 705 indicates whether the admission process should conform to a rapid admission process or not. If not, then the admission process requires the links between the NN 705 and each of the other ENs of the network to be completely characterized and a PHY profile be activated for each link to the NN 705 and from the NN 705 before the admission process is complete and the NN can be admitted to access the data plane (i.e., communicate data to another node on the network).
  • the Admission Process is completed upon attaining a PHY profile for the link between the NN 705 and the NC 701. Once the admission process is completed, the NN 701 becomes a newly admitted EN and can access the data plane, as will be described in greater detail below.
  • a PHY profile provides information derived by transmission and reception of probes between nodes.
  • the information in the PHY profile indicates the power levels and modulation schemes that should be used on a particular link.
  • a PHY profile is active when all of the information to determine the power level and modulation scheme to be used in transmitting data to an egress node has been attained and is available.
  • the NC 701 responds to the Admission Request message by sending an Admission Response 709 to the NN 705 and each of the ENs 711 in the network.
  • the NN 705 and each EN 71 1 send a Link Acknowledgement 713 to the NC 701.
  • the NC 701 then sends EVM probes 715 to the NN 705.
  • the NN 705 uses the probes 715 to generate a Probe Report 717, which the NN 705 sends to the NC 701.
  • the NC 701 activates the reported unicast PHY profile contained in the Report 717.
  • the NC 701 also generates a New GCD Probe Distribution Report 719 and sends it to the NN 705.
  • the NN 705 responds with a Link Acknowledgement 721 indicating successful receipt of the New GCD Probe Distribution Report 719.
  • the NC 701 Upon receipt of the acknowledgement 721, the NC 701 sends a copy of the New GCD Probe Distribution Report 723 to each of the ENs 71 1. Each EN 711 sends a Link Acknowledgement 725 back to the NC 701. Upon receiving a Link Acknowledgement from each of the ENs 711, the NC 701 activates the distributed GCD PHY profiles and starts broadcasting MAPs 727 using the new GCD PHY profile. The NN 705 completes the characterization of the link from the NN 705 to the NC 701 by sending Probe transmissions 729 to the NC 701. The NC 701 then sends an EVM Probe Report 703 based on the received EVM Probes 729. If the NN has requested a rapid admission process, then the NC 701 moves the network to Steady State, completing the Admission Process.
  • the NN 705 can send a RR to the NC 701 to schedule either transmission of a unicast data or a broadcast data.
  • the newly admitted EN 705 sends the data to the NC 701 as a unicast data 731.
  • the NC 701 will then relay the data 733 to the intended destination EN 711 or broadcast the data if the data is for
  • NN 705 can communicate to the NC 701 that the NN 705 has data that it would like to send to one or more of the ENs 71 1 in the network.
  • EN 711 can send data frames 735 to the NC 701 that are intended for the NN 705.
  • NC 701 will then relay the data frames 737 to the NN 705.
  • FIG. 8 is a process flow diagram showing the process used to send information from a newly admitted EN 801 to an intended destination EN 803.
  • the newly admitted EN 801 sends a reservation request 805 to the NC 807 asking for a transmission from the newly admitted EN 801 to the NC 807.
  • the NC 807 sends a MAP 809 that schedules the transmission in the next appropriate MAP cycle.
  • the newly admitted EN 801 then sends the data 811 (such as an MPDU) to the NC 807.
  • the data indicates in the destination field that the data is intended for the destination EN 803.
  • the NC 807 sends a MAP 813 scheduling transmission of the data from the NC 807 to the intended destination node 803 in the next appropriate MAP cycle.
  • the NC 807 then sends the data 815 to the intended destination EN 803.
  • the intended destination EN 803 upon the request of the newly admitted EN 801 as signaled in the data packet headers, the intended destination EN 803 returns an acknowledgement 817 signaling to the NC 807 that the data packets were successfully received.
  • the NC 807 then relays the acknowledgement to the newly admitted EN 801 either in MAP or unicast it to EN801 directly.
  • the newly admitted EN 801 waits for the acknowledgement before completing the transmission.
  • the NC 807 receives a RR 805 from the newly admitted EN.
  • the RR 805 identifies the intended destination EN 803 as the destination for the transmission being requested.
  • the NC 807 recognizes that there is no PHY profile yet established for the link between the newly admitted EN and the destination EN 803. Therefore, since there is no PHY profile yet established for the requested transmission of data from the newly admitted EN 801 to the destination EN 803, the NC 807 will schedule resources for the newly admitted EN 705 to send the data intended for the destination EN 803 to the NC 807.
  • the NC 807 relays the data to the EN 803.
  • the NC 807 sends a MAP 813 that schedules the transmission in the next appropriate MAP cycle.
  • the NC 807 schedules a Link Maintenance Operation (LMO).
  • LMO Link Maintenance Operation
  • the NC 807 schedules probes to be sent from the newly admitted EN 801 to each of the other nodes in the network. Probe reports are generated by receiving nodes based on the received probes.
  • PHY profiles indicating the power levels and modulation schemes to be used for communications from the newly admitted EN 801 to each of the other nodes, including EN 803, are generated and implemented.
  • the NC 807 will become aware of the existence of the PHY profile.
  • the NC 807 activates the PHY profile to allow the newly admitted EN 801 to access the data plane to communicate with each EN 803 for which such an active PHY profile exists. Accordingly, in one such embodiment, it is possible for the newly admitted EN 801 to communicate over the network with some of the ENs 803 directly, before an active PHY profile is available for other ENs 803.
  • FIG. 9 is a process flow diagram of yet another embodiment, in which it is possible for the NC 907 to determine that a route over a direct link between in Ingress Node 903 and an Egress Node 904 is more inefficient than a route through the NC 907.
  • a RR to schedule a transmission from the Ingress Node 903 to the Egress Node 904 may not be granted. Rather, the NC 907 will establish a link through the NC 907 by which the Ingress Node 903 sends data to the NC 907. The NC 907 then relays the data to the Egress Node 904.
  • the Ingress Node 903 sends an RR 905 to the NC 907.
  • the NC 907 determines from the RR 905 that the Ingress Node 903 has data for delivery to the Egress Node 904.
  • the NC 907 responds by sending a MAP 909 to schedule a transmission of the data from the Ingress Node 903 to the NC 907 in the next appropriate MAP cycle.
  • the Ingress Node 903 sends the data 91 1 to the NC 907 at the scheduled time.
  • the NC 907 then sends a MAP 913 to schedule a transmission from the NC 907 to the Egress Node 904.
  • the NC 907 then sends the data 915 received by the NC 907 and intended for the Egress Node 904 to the Egress Node 904.
  • the Egress Node 904 upon the request of the Ingress Node 903 as signaled in one or more of the headers of the data 915, the Egress Node 904 sends an Acknowledgement 917 to the NC 907 to signal the successful receipt of the data.
  • the NC 907 then relays the
  • FIG. 10 is an illustration of an Ingress Node 903, an Egress Node 904 and an NC 907 within a network 1000.
  • the NC 907 relays the data from the Ingress Node 803 to the Egress Node 904:
  • ⁇ , ⁇ is the duration of the data preamble of the data when being sent directly from the Ingress Node 803 to the Egress Node 804;
  • IFG is the duration of the interframe gap used between data
  • M is the size of the data in bits
  • 3 ⁇ 4,Nc is the data rate when the data is being sent from the Ingress Node 903 to the NC 907;
  • PI,NC is the duration of the data preamble of the data when being sent from the Ingress Node 903 to the NC 907;
  • PNC,E is the duration of the data preamble of the data when being sent from the NC 907 to the Egress Node 903;
  • RNC,E is the data rate when the data is being sent from the Ingress Node 903 to the NC 907.
  • the data will be relayed by the NC 907.
  • the determination as to when to relay data through the NC 907 can be made by the NC 907.
  • the Ingress Node 903 can request that the NC 907 relay the data.
  • FIG. 1 1 is a simplified block diagram of the hardware used to implement a network node 500 in accordance with one embodiment of the disclosed method and apparatus.
  • the node 500 comprises at least one processor 1 100, a memory 1102, and a PHY 1 104.
  • the memory 1102 is coupled to the processor 1 100.
  • the PHY 1 104 includes an RF front end 1106.
  • the PHY may also include a processor (not shown) that performs functions associated with the PHY 1104. Alternatively, some control functions of the PHY 1104 may be performed by the processor 1 100.
  • the node 500 may have several processors that work together or independently.
  • the processor 1 100 reads program code from the memory 1102 and executes the code to perform the functions of the DLL 504.
  • the processor 1 100 also implements the upper layers 512.
  • a management entity 514 (see FIGURE 5) is implemented by the processor 1 100.
  • the management entity 514 is not co-located with the DLL 504.
  • the management entity 514 is implemented using a different processor or multiple processors.
  • the upper layers 512 are not co-located with the DLL 504. It should be clear that the particular physical layout of the logical components is not significant to the disclosed method and apparatus, so long as the disclosed functionality is possible.
  • a group of items linked with the conjunction "and” should not be read as requiring that each and every one of those items be present in the grouping, but rather should be read as “and/or” unless expressly stated otherwise. Similarly, a group of items linked with the conjunction “or” should not be read as requiring mutual exclusivity among that group, but rather should also be read as “and/or” unless expressly stated otherwise.
  • module does not imply that the components or functionality described or claimed as part of the module are all configured in a common package. Indeed, any or all of the various components of a module, whether control logic or other components, can be combined in a single package or separately maintained and can further be distributed in multiple groupings or packages or across multiple locations.

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Abstract

L'invention concerne des systèmes et des procédés destinés à assurer une admission rapide dans un réseau, pour des nouveaux nœuds et des nœuds quittant un mode à puissance réduite. Les nœuds peuvent commencer à accéder au plan de données du réseau avant d'établir des profils PHY actifs pour toutes les liaisons du réseau. Le coordinateur de réseau peut relayer des données entre un nœud nouvellement admis et un nœud existant lorsqu'il n'existe aucun profil PHY actif pour la liaison entre le nœud nouvellement admis et le nœud existant.
PCT/US2015/024606 2015-04-07 2015-04-07 Procédé et appareil de relais de données et d'admission instantanée WO2016163989A1 (fr)

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