Abstract: A terminal access method includes: sending, by a network device, uplink signal configuration information for an idle terminal to a terminal; receiving, by the network device from a first base station, uplink signal measurement information and load of the first base station, wherein the uplink signal measurement information is obtained by measurement by the first base station upon receiving an uplink signal carrying a terminal identifier from the terminal based on the uplink signal configuration information; and configuring, by the network device, mobility for the terminal based on the terminal identifier, the uplink signal measurement information and the load of the first base station, wherein the configuring mobility is configuring a candidate serving base station for the terminal such that the terminal initiates a service request to enter an active state at the candidate serving base station.

Abstract: Apparatuses, systems, and methods identify, among a plurality of DSL lines, a subgroup of DSL lines based on one or more common characteristics and use the common characteristic(s) to identify a set of power control parameters that enable an upstream rate for the subgroup of DSL lines that is different than an upstream rate for DSL lines in the plurality of DSL lines that do not include the subgroup of DSL lines before applying the set of power control parameters to the subgroup of DSL lines to achieve the upstream rate.

Abstract: Disclosed is a device for increasing reliability of downlink traffic to mobility devices in an RPL environment that can increase reliability of downlink traffic by dual path generation and redundant packet retransmission for the mobile device in an environment where mobility exists. The moving device includes a directed acyclic graph (DAG) rank value acquisition unit for receiving a destination oriented directed acyclic graph information object (DIO) of parent devices to obtain a DAG rank value of each parent device; a parent device selection unit for selecting prefer parents and alternate parents based on a DAG rank of the parent device; and a destination advertisement object (DAO) signal processing unit for transmitting a DAO to a sync device when the prefer parents and the alternate parents are determined.

Abstract: Methods, systems, and computer-readable media for optimizing application configurations in a provider network are disclosed. An application description is determined that comprises one or more resource utilization characteristics of an application. Automated analysis is performed of a plurality of potential configurations for the application based at least in part on the application description. The automated analysis comprises scoring at least a portion of the potential configurations based at least in part on a scoring function. A recommended configuration for the application is determined based at least in part on the automated analysis. The recommended configuration comprises a type and number of computing resources in a multi-tenant provider network.

Abstract: A wireless router deployment method for determining deployment positions of wireless routers in a spatial area includes: acquiring first position information on a plurality of candidate nodes distributed in the spatial area for deploying the wireless routers; determining, based on the first position information, a network coverage probability and a network energy efficiency value for each of the candidate nodes presuming a to-be-deployed wireless router is deployed at the candidate node; determining network quality scores for respective candidate nodes according to the network coverage probability and the network energy efficiency value; and selecting a candidate node with the highest network quality score as a deployment position for the to-be-deployed wireless router.

Abstract: In one embodiment, a method includes receiving an association request from a nearby electronic device via a local wireless network connection, transmitting a position coordinate associated with a first node via the local wireless network connection to the nearby electronic device, receiving location information of one or more peer nodes from the nearby electronic device, adding the location information of the one or more peer nodes into a log included in the first node, and determining that at least two nodes are within Line-of-Sight (LOS) communication range of the first node based on the log, wherein the at least two nodes are included in the one or more peer nodes.

Abstract: A wireless data message in 5G/6G generally includes the destination address (such as MAC address) encoded in a field of the data message. A base station must receive the data message and decode the address before the core network can deliver the message to the recipient's cell. For faster communication, certain address messages are disclosed, by which the destination address may be disclosed before the data message is uploaded. Early disclosure of the destination address may enable the core network to deliver the data message to the recipient with fewer delays. In various configurations, the destination address may be provided concurrently with a scheduling request, or combined with a BSR (size) message, or delivered on a random access channel, among other possibilities. For faster uploads, a pointer or code representing the destination address can be specified, resulting in further delay reductions.

Abstract: An order entry and order management network is disclosed. Event log data associated with a completed real order and relevant to a scenario is accessed by a computing device. A template is built for the scenario using the event log data. The template is modified as needed based upon predetermined specifications of the scenario. A simulated order is generated by applying the event log data to the template. A simulated workflow is initiated based upon the simulated order. The simulated workflow is a virtualized workflow monitored by the computing device to test the scenario. The computing device monitors network traffic associated with orders. The computing device communicates aspects of the event log data to systems of the order entry and order management network when the computing device identifies network traffic associated with the simulated order in order to process the simulated workflow and test the scenario.

Abstract: The present disclosure is directed to systems and methods for auto-provisioning hubs and spokes in a SD-WAN network, and includes the performance of operations and/or the steps of receiving first information from a first network hub, the first network hub one of a plurality of network hubs, the first information indicating a first set of properties associated with the first network hub; publishing the first information to a plurality of network spokes, the plurality of network spokes determining whether to subscribe to the first network hub based on the first information; receiving subscription information from a first network spoke of the plurality of network spokes, the subscription information indicating the first network spoke subscribing to the first network hub; and creating at least one dynamic control policy to establish a forwarding path for the first network spoke through the first network hub.

Abstract: Methods for selecting network slice, session management, and user plane functions for user equipment (UE) are described. In one example, a control plane (CP) entity for mobility management may select a CP entity for session management for a session of a UE based on a first set of data items. The CP entity for mobility management may further select a user plane (UP) entity for the session of the UE based on a second set of data items, where second set of data items include at least some of the same data items of the first set. The CP entity for mobility management may send, to the selected CP entity, a message including an identity or indication of the selected UP entity for the session of the UE. The selected CP entity may select the identified or indicated UP entity for use in the session of the UE.

Abstract: In a managed wireless environment where a controller is gathering data in order to optimize the wireless network, certain data parameters are gathered in order to optimize the network. The gathered parameters are then utilized to determine best case links for various attached wireless station devices in order to: 1) optimize the network and 2) optimize the per station (STA) links. The control points utilized to determine the network optimization will vary based on the desired outcomes for the system. As such, configurable ‘profiles’ will be utilized in order to prioritize outcomes for the system. These profiles may be utilized by the network steering controller in order to steer wireless station devices to optimize the network in the desired fashion.

Abstract: Disclosed herein is a method, a wireless device and a session management node for IP version selection for a PDU session requested to be established by a WCD, that supports PDU sessions of both IPv4 and IPv6 and that is configured to operatively communicate via a RAN with a SM node in a core network lot, the method being performed by the WCD comprises: sending S110 a first PDU session request message towards the SM node requesting establishment of a first PDU session, which request message comprises IP-version information indicating that the IP version of the requested first PDU session should be any one of IPv4 or IPv6; and receiving S130, S140, in response to sending the first PDU session request message, a first response message, which first response message comprises WCD information indicating the IP-version (i.e. IPv4 or IPv6) that has been selected for the requested first PDU session.

Abstract: In one embodiment, a method comprises: identifying, by a root network device of a directed acyclic graph (DAG) in a low power and lossy network, a child network device in the DAG, including identifying a first rank associated with the child network device; allocating, by the root network device, an allocated rank for the child network device, the allocated rank different from the first rank; and outputting, by the root network device, a message to the child network device specifying the allocated rank, the message causing the child network device to implement the allocated rank in the DAG, including causing the child network device to generate and output a Destination Oriented Directed Acyclic Graph (DODAG) information object (DIO) message specifying the child network device is using the allocated rank.

Abstract: A control method that is achieved by a refrigerator application installed in portable terminal, the control method including the steps of instructing an operating system (OS) of portable terminal to connect to a refrigerator in operation in a software access point mode, and sending a service set identifier (SSID) of an access point and a password for connecting to the access point to the refrigerator. An SSID of the refrigerator that operates in the software access point mode, and a password for connecting to the refrigerator that operates in the software access point mode are incorporated in the refrigerator application in advance.

Abstract: An illustrative orchestration system is configured to provide, to a user equipment (UE) device communicatively coupled to a federation of compute clusters, cluster selection data for a subset of compute clusters from the federation of compute clusters. The cluster selection data is configured to facilitate the UE device in characterizing the compute clusters of the subset with respect to a service optimization policy. The orchestration system is further configured to receive, from the UE device, an orchestration request indicative of a compute cluster selected by the UE device based on the characterizing of the compute clusters of the subset. The orchestration system is configured to then orchestrate, in response to the orchestration request, fulfillment of a service request to be performed by the selected compute cluster for the UE device. Corresponding methods, systems, and devices are also disclosed.

Abstract: An access point that provides a transition recommendation is described. This access point may provide a first WLAN having a first capability. During operation, the access point may associate with the electronic device. Moreover, the access point may determine that the electronic device has a second capability that is different from the first capability. For example, the first capability may include compatibility with a first IEEE 802.11 standard and the second capability may include compatibility with a second IEEE 802.11 standard. Next, the access point may provide the transition recommendation addressed to the electronic device based at least in part on the difference in the first capability and the second capability, where the transition recommendation recommends that the electronic device transition from the first WLAN to a second WLAN that has the second capability.

Abstract: A system includes a memory and at least one processor in communication with the memory. A processor is configured to receive a first log message denoting an event associated with a first application executing in the system. A machine learning model generates a predicted log message based at least in part on the first log message. The predicted log message represents a prediction of a subsequent log message to be received from the first application. First metric data associated with the predicted log message is determined. The first metric data describes system conditions of the system associated with the predicted log message. A tuning profile associated with the system conditions is determined and the current system configuration of the system is modified using the tuning profile.

Abstract: A method is proposed for the identification of a connected object in a network infrastructure which comprises at least two networks of connected objects interconnected by the intermediary of a data transport network. The method enables a connected object to search for and identify one or more other connected objects of the network infrastructure on the basis of specific search criteria. In particular, a connection gateway can, first, receive (201) and process (202) a request, which contains the search criteria, coming from a connected object and, secondly, transmit (203) to said connected object identification information for other connected objects that meet these criteria.

Abstract: With a network design apparatus, a network design method, and a network design processing program, a network configuration is designed for a network in which a transfer apparatus is disposed at each of a plurality of communication hubs and the communication hubs are connected via a link by a link portion apparatus in the transfer apparatus. In design of a network configuration, an optimal combination candidate of a link portion apparatus for each link for minimizing a total cost value in an overall network is calculated on the basis of a combination candidate set of link portion apparatuses. The combination candidate set of the link portion apparatuses is configured using only combination candidates with a cost-effectiveness indicating a ratio of a total capacity to a total cost value of the link portion apparatus higher than a predetermined reference.

Abstract: A wireless mesh network comprises a controller and a plurality of wireless networked devices arranged to transmit messages to and receive messages from the controller. The plurality of devices are arranged in zones, such that a device that is arranged to communicate directly with the controller is designated a “Zone 1” device and a device that is arranged to communicate with the controller via a “Zone 1” device is designated a “Zone 2” device. One or more or each of the plurality of devices periodically sends a positioning message to the controller to determine its zone and if it can communicate directly with the controller it determines that it is a “Zone 1” device and if it cannot communicate directly with the controller, but it can communicate with the controller via a “Zone 1” device and therefore arranged to do so, it determines that it is a “Zone 2” device.

Abstract: A photonic node includes a first circuit disposed on a first substrate and a second circuit disposed on a second substrate different from the first substrate. The first circuit is configured to route light signals originated from the photonic node to local nodes of a local group in which the photonic node is a member. The second circuit is configured to route light signals received from a node of an external group in which the photonic node is not a member, to one of the local nodes.

Abstract: Object Management Group (OMG) Data Distribution Service (DDS) DomainParticipants communication methods and system are provided using the Real-Time Publish Subscribe (RTPS) wire protocol over one or more wide area networks (WAN). Three main issues are addressed: Network Address Translation traversal, Changes in IP addresses, and Efficient bandwidth utilization. Embodiments lead to a scalable solution for WAN Connectivity of DDS Applications using RTPS Wire Protocol. This is a connectionless solution that works on top of UDP as the IP transport. The key benefits of this solution are: Low latency communication with reliable and best-effort data delivery, Minimal data loss when moving across networks, including firewalls/NATs, Minimal migration impact for existing applications. No changes to the API, and Scalability using UDP versus legacy TCP solution.

Abstract: A local roaming cell system for a mobile communication coverage area is disclosed. The system comprises: a RF head end that communicates with a plurality of base stations via a plurality of wireless RF communication links, wherein the plurality of base stations are outside of the coverage area; a conversion and link aggregation circuit that demodulates and processes downlink base station signals associated with at least two of the plurality of base stations by link aggregation to obtain a downlink signal comprising communications data extracted from the downlink base station signals; a roaming base station that modulates portions of the downlink signal to provide a local communication cell within in the coverage area to a plurality of user terminals. A first of the user terminals communicates via the roaming base station with a different one of the plurality of base stations than a second of user terminals.

Abstract: A dedicated wireless access point is not required, and an air-conditioning apparatus can be paired with a wireless access point simply by operating at hand an operating device that is separate from the air-conditioning apparatus. A remote control (15) is provided with a pairing request instruction button for instructing an air conditioner (12) to cause a first communicator serving as a wireless device of the air conditioner (12) to transmit pairing request data, and upon receiving, from the remote control (15), a signal indicating that the pairing request instruction button has been operated, the air conditioner (12) transmits pairing request data through the first communicator, completes a pairing upon receiving authentication data from a wireless AP (13), and connects to the wireless AP (13).

Abstract: A method implemented by a first node of an ad hoc network, including maintaining a routing table containing at least one route available within the network having at least one segment directly linking two nodes of the network by a connectivity link having a type identified in the table, and for each node of a segment, an indication concerning its degree of mobility. The table is maintained based on information extracted from control messages emitted over the network and intended for or traveling through the first node. The method includes: upon sending a data message from the first node to a second node: identifying, by using the table, at least one route between the first and second nodes; and determining a level of stability of each route based on the degree of mobility of the nodes and on the type of connectivity links; and selecting the most stable route.

Abstract: A management apparatus is configured to manage a network service (NS) constructed on a network (NW) including a core NW configured to serve as a virtualization area and an access NW configured to serve as a non-virtualization area includes an E2EO configured to control the NS, an SVRO configured to control server-type apparatuses located on the NW, and a NWRO configured to control NW-type apparatuses located on the NW. The E2EO includes a single data center (DC) determination unit configured to determine whether a group of apparatuses used for providing the NS is located in a single DC. The group of apparatuses is designated by an order acquired from an upper level apparatus U. Among the NW-type apparatuses, ToRs located in the DC are controlled by the SVRO, instead of by the NWRO, when it is determined that the group of apparatuses is located in the single DC.

Abstract: Embodiments of the present disclosure relate to software-defined networks, and particularly, but not exclusively to programmable packet data processing systems, methods and computer readable products for use therein.

Abstract: The disclosure relates to a system and method for providing enhanced security of physical assets within a physical infrastructure. The method includes receiving an overall layout of the physical infrastructure and multi-modal input with respect to the physical asset from a plurality of sensors installed within the physical infrastructure. The multi-modal input includes acoustic signal generated by or reflected off the physical asset and captured by a set of acoustic sensors. The method further includes generating a digital asset corresponding to the physical asset by determining an identification, a location, a shape, a size, and a behavior of the physical asset based on the multi-modal input and the overall layout, detecting one or more events of interest involving the digital asset based on the behavior of the physical asset, and simulating the one or more events of interest to evaluate a possible fault or a possible security threat.

Abstract: A communications node of a multi-node communications network is disclosed. In embodiments, the communications node includes a communications interface and controller. The controller transitions the clustering status of the communications node to a clusterhead node status. The clusterhead node identifies a cluster of neighboring nodes with which it is in communication by transmitting hello messages identifying the clusterhead node and its status but omitting a one-hop neighbor list. The clusterhead node refines link discovery to the nodes of the multi-node communications network by flooding the network (e.g., via its cluster of neighboring nodes) with routing status messages, which network nodes not part of the dominating set of clusterhead nodes are restricted from sending.

Abstract: A system, method, and computer-readable medium for updating request routing information associated with client location information are provided. A content delivery network service provider receives a DNS query from a client computing device. The DNS query corresponds to a resource identifier for requested content from the client computing device. The content delivery network service provider obtains a query IP address corresponding to the client computing device. Based on routing information associated with the query IP address, the content delivery network service provider routes the DNS query. The process further includes monitoring performance data associated with the transmission of the requested resource and updating routing information associated with the query IP address based on the performance data for use in processing subsequent requests form the client computing device.

Abstract: A host unit of an information processing apparatus has a command issuing block for issuing access requests to a flash memory, the issued commands being dividedly stored in two or more queues according to the contents and emergency level of access. A management command generating block of a flash controller generates requests for the processing necessary for the management of the flash memory, the requests being stored in any one of the queues. Following the rules set for each queue, a command processing block reads commands by switching between the queues and processes the commands.

Abstract: Facilitating a determination of channel state information for advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise configuring a mobile device with a demodulation reference signal. The operations can also comprise transmitting a channel state information reference signal to the mobile device, wherein the channel state information reference signal configures a number of channel state information reference signal ports. Operations of another system can comprise determining a number of resources for a group of transmission ranks and determining a link quality metric for transmission ranks of the group of transmission ranks. The operations can also comprise selecting a transmission rank and a precoding matrix indicator and transmitting the precoding matrix indicator to a network device.

Abstract: A particular fat tree network node stores default routing information indicating that the particular fat tree network node can reach a plurality of parent fat tree network nodes of the particular fat tree network node. The particular fat tree network node obtains, from a first parent fat tree network node of the plurality of parent fat tree network nodes, a negative disaggregation advertisement indicating that the first parent fat tree network node cannot reach a specific destination. The particular fat tree network node determines whether the first parent fat tree network node is the only parent fat tree network node of the plurality of parent fat tree network nodes that cannot reach the specific destination. If so, the particular fat tree network node installs supplemental routing information indicating that every parent fat tree network node except the first parent fat tree network node can reach the specific destination.

Abstract: A control-plane interface is established between a cellular radio access node and an anchor for at least first and second non-cellular radio access nodes (such as API and AP2); and thereafter during mobility of a user equipment (UE) from API to AP2, the anchor relocates a user-plane interface for a radio link allocated to the UE from API to AP2 while maintaining the established control-plane interface for the radio link. When implemented for LTE-WLAN Aggregation (LWA), the control-plane interface is Xw-C with a corresponding control plane wireless termination (WT-C), the user-plane interface is Xw-U with a corresponding user plane wireless terminations (WT-U); the cellular radio access node is an eNB, the APs belong to the anchor and have BSSs that belong to a same mobility set that is configured for the UE by the eNB; the anchor is the WT-C, and the APs are WT-Us.

Abstract: Systems, methods, and apparatus provide a multi-master serial peripheral interface. An apparatus is coupled to master and slave devices through an interconnect circuit using individual point-to-point SPI links. The interconnect circuit may be configured to couple pairs of devices selected from the plurality of devices through their individual point-to-point SPI links, enable a first transaction to be completed between a first pair of devices after a first master device in the first pair of devices initiates the first transaction, enable a second transaction to be completed between a second pair of devices after a second master device in the second pair of devices initiates the second transaction, and prevent a collision between the first master device and the second master device while the first pair of devices are engaged in the first transaction. The pairs of devices may be selected when they are participants in one or more transactions.

Abstract: This disclosure relates to notification systems and methods for providing a notification of detected prohibited behavior to a user device that is estimated to be nearest to a particular location. In aspects of the present disclosure, a notification system includes at least one sensor configured to sense measurements indicative of a prohibited behavior, a wireless device passive monitor, a processor, and a memory having stored thereon instructions. The instructions, when executed by the processor, cause the notification system to detect an occurrence of the prohibited behavior based on the sensed measurements, estimate which user device from a predetermined list of user devices is a nearest user device to the wireless device passive monitor, and provide a notification to the estimated nearest user device regarding the detected occurrence of the prohibited behavior.

Abstract: Network link redundancy may be provided. A node comprising a virtualization of a network topology comprising a plurality of devices may be provided. Next, the node may be provided with at least two ports. Each of the at least two ports may respectively comprise an inside facing portion that uses a first protocol and an outside facing portion that uses a second protocol. The node may operate using the first protocol. A behavioral mode of the at least two ports may be controlled and the behavioral mode of the at least two ports may be communicated to at least one other node outside the node.

Abstract: Disclosed herein are system, method, and computer program product embodiments for enabling access to a firmware-locked function of a secure device. A secure device may be production hardware that has locked certain functions not available for public use. In an embodiment, the secure device may receive a request to access a firmware-locked function. The request may include an authorization token that includes an identifier specific to the particular secure device. Based on the receipt of the authorization token, the secure device may retrieve authorization data from the firmware memory of the secure device to determine whether the provided authorization token matches the firmware authorization data. In an embodiment, the secure device may also utilize channel information for authentication purposes. Using the authorization token and/or channel information, the secure device may determine whether to grant access to the firmware-locked function.

Abstract: A method for providing stateful proxying is disclosed, comprising: associating a first base station with a first base station identifier at a signaling protocol gateway, and with a first Internet Protocol (IP) address of the signaling protocol gateway; associating a second base station with a second base station identifier at the signaling protocol gateway, and with a second IP address of the signaling protocol gateway; establishing a first signaling protocol connection between a third base station and the first base station via the signaling protocol gateway with the first base station using the first IP address of the signaling protocol gateway; and establishing a signaling protocol connection between the third base station and the second base station with the second base station using the second IP address of the signaling protocol gateway.

Abstract: A method for operating a device includes measuring a radio condition for channels between the device and each of a plurality of candidate serving nodes, thereby producing radio condition measurements, adjusting for each of the plurality of candidate serving nodes, an associated radio condition measurement in accordance with stratum information of the candidate serving node, and selecting a serving node from the plurality of candidate serving nodes in accordance with the adjusted radio condition measurements.

Abstract: A system for visualizing and navigating network data may include at least one computing device that receives input data using a NetTree application. The NetTree application may parse the input data and determine a list of nodes in a network and a list of links between nodes in the network from the input data. One of the nodes may be selected as a start node and inserted into a line of a network tree. After selecting the start node, the NetTree application may iterate through each of the links between the nodes in the network and add each new node that is not yet added to the network tree to a list of nodes to check for their links. Each link is added to a line in the network tree. A graphical user interface (GUI) may display the network tree.

Abstract: An electronic device is provided, which includes a first communication circuit supporting a neighbor awareness networking (NAN) protocol; a second communication circuit configured to support a second protocol different from the NAN protocol; a memory; and a processor operatively connected to the first communication circuit, the second communication circuit, and the memory.

Abstract: Example implementations described herein generate plans for the deployment of functions involving the distribution function and the allocation of network resources based on the requirements of the distributed functions on the control system and the network information constituting the control system. Example implementations involve gathering requirements of the distributed functions constituting the distributed control system, information of the network, and information of the plurality of communication devices, and generating a plan for deployment of the distributed functions to corresponding ones of the plurality of communications devices and allocation of network resources to the corresponding ones of the plurality of communication devices based on the gathered requirements and the information of the network.

Abstract: Disclosed herein are systems, methods, computer media, and apparatuses for providing resource tracking, such as in a data center environment. A control and monitoring node receives updates indicating instantiation of resources in the computing system network. The control and monitoring node determines that there are duplicate resources in the network, and then determines which of the duplicate resources to provide connectivity to. The control and monitoring node provides network configuration updates to various networking resources in the network to provide network connectivity to the one of the duplicate resources in the network.

Abstract: The invention regards the forwarding of multicast messages in a network system. A network router according to the present invention comprises a memory in which configuration data is stored. The configuration data define at least one route along which a multicast message is to be forwarded. If the forwarding of a multicast message is allowed in principle by such specified route, it is additionally checked if from the downlink side of the network router, multicast listener information was received. Only if both conditions are fulfilled, the multicast message will be forwarded along the specified route.

Abstract: An apparatus configured to perform communication includes a communication unit configured to transmit advertising information, and an obtaining unit configured to obtain information about a usage type of the apparatus. The communication unit is configured to transmit advertising information including the obtained information about the usage type.

Abstract: A user terminal according to one aspect of the present invention performs a first step of determining a communication parameter value used for wireless communication with the external device by selecting one communication parameter set from a plurality of communication parameter sets each defining a communication parameter value or by receiving designation of a communication parameter value by a user, a second step of making a wireless communication attempt with the external device based on the determined communication parameter value, and a third step of reporting a result of the wireless communication attempt and terminal information of an own device to an external server device.

Abstract: Provided is a terminal apparatus including a processing unit that determines which of a base station or a relay terminal is set as a transmission destination for each packet based on whether or not a predetermined condition is satisfied.

Abstract: A communication device includes: a storing part storing a definition table where a reception power and a metric value are associated with each other, and a cumulative metric value; a receiving part that receives a broadcast signal transmitted from another communication device; a calculating part that acquires a metric value corresponding to a reception power of the broadcast signal received by the receiving part from the definition table, and calculates a cumulative metric value based on the acquired metric value and a metric value included in the received broadcast signal; and a determining part that updates a cumulative metric value stored in the storing part to the calculated cumulative metric value if the calculated cumulative metric value is smaller than the cumulative metric value stored in the storing part, and determines the other communication device transmitting the broadcast signal of the calculated cumulative metric value as a route construction target.

Abstract: A codebook feedback method and an apparatus. In the method, antenna ports corresponding to first-type reference signals of a cell in which a user equipment (UE) is located are grouped into at least two antenna port groups, and each antenna port group includes at least one antenna port, and the method includes receiving, by the UE, a first-type reference signal that is corresponding to a target antenna port group and that is sent by a base station, where the target antenna port group is an antenna port group in the at least two antenna port groups, obtaining, by the UE, precoding matrix indicator (PMI) information of the first-type reference signal corresponding to the target antenna port group and sending, by the UE, the PMI information to the base station.