Abstract: The application relates to a method for configuring ports of radio equipments connected to an internal network of a base station of a mobile communications network. The application also relates to the corresponding radio equipment and the corresponding radio equipment controller The method comprises: activating at least one port of the radio equipment to become an activated port, changing the activated at least one port to a non-connected slave state in which the activated at least one port listens to a communication on a link of the internal network for a time period, upon detection of the communication on the link changing the activated at least one port to a connected slave state, or upon expiry of the time period changing the activated at least one port to a non-connected master state in which the activated at least one port actively sends data into the link of the internal network.

Abstract: The present invention extends to methods, systems, and computer program products for routing requests for duplex applications. Embodiments of the invention provide a multi-machine scalability mechanism for duplex messages patterns based on a polling mechanism. Client requests and polls can be distributed to service instances running within a cluster of machines by a session-unaware load balancer. Messages to and from a given client can be accessed by any service instance in the cluster service instance, which allows capacity scale-out and seamless failover between service instances. A coordinated inbound message store is used to affinitize application requests to a particular service instance. A coordinated outbound message store is used to route application responses from the machine running the application to the machine where a polling request arrived.

Abstract: Embodiments of the invention are directed to providing a method for selecting a link for transmitting a data packet, from links of a Multi-Link Point-to-Point Protocol (MLPPP) bundle, by compiling a list of links having a minimum queue depth and selecting the link in a round robin manner from the list. Some embodiments of the invention further provide for a flag to indicate if the selected link has been assigned to a transmitter so that an appropriate link will be selected even if link queue depth status is not current.

Abstract: A data communication network (DCN) having a plurality of network devices coupled to the DCN with at least one of the network devices having a “boot once” connectivity manager processor (CMP). The CMP receives its power over the DCN rather than from the power applied to the network devices. The CMP can execute special operating system code and maintain network connectivity even if the network device itself is powered off, is being booted or is otherwise non-functional. The CMP is also coupled to the network device's memory so that it may respond to out-of-band polling requests for device status information from network management tools. With CMP, network administrators can monitor the boot process of network devices, determine that a network device is non-functional due to power loss and can maintain an accurate inventory status of spare network devices that are stored un-powered in a spares closet.

Abstract: A technique for combining transmission bandwidths of several mobile stations (MS1, MS2) is disclosed. A master mobile station (MS1) establishes (7-0) a WLAN base station communicating with WLAN client terminals (CT). One or more slave mobile stations (MS2) may detect a predefined network identifier and join the WLAN network. The master (MS1) assigns IP addresses for the client terminals (CT) and slave mobile stations (MS2). The master also resolves DNS queries in cooperation with external DNS servers. Traffic, including internet packets (IP1-IP4), between the client terminals and various internet hosts (HO) is tunneled over multiple simultaneous transmission paths between the master (MS1) and a multiplexing/demultiplexing computer (SM). The inventive bandwidth combination technique is transparent to the client terminals (CT) and the internet hosts (HO).

Abstract: A system for transmitting data directly between a plurality of client network devices in a network is disclosed. The system may include a first client network device having a first client (“STA”) module and a second client network device of the plurality of client network devices where the second client network device includes a Dual Access Point and Station enabled device (“DAS-enabled device”).

Abstract: A system and method for controlling communications between a plurality of clients and a central component. An embodiment of the invention includes one or more buses that connect the clients and the central component. This embodiment also includes a control module that is configured to receive ASK messages from the clients and issue GO commands to the clients. Each ASK message represents a request from a client to access the central component. Each GO command to the client represents permission for that client to access the central component. The control module comprises delay stages that delay the GO command. The delays may be different from client to client. The number of delay stages is chosen so that for all clients, the delay between the issuance of a GO command and the receipt at the central component of communications from the clients is the same.

Abstract: Embodiments disclosed herein for MAC processing for efficient use of high throughput systems and that may be backward compatible with various types of legacy systems. In one aspect, a data transmission structure comprises a consolidated poll and one or more frames transmitted in accordance with the consolidated poll. In another aspect, a Time Division Duplexing (TDD) data transmission structure comprises a pilot, a consolidated poll, and zero or more access point to remote station frames in accordance with the consolidated poll. In one aspect, frames are transmitted sequentially with no or substantially reduced interframe spacing. In another aspect, a guard interframe spacing may be introduced between frames transmitted from different sources, or with substantially different power levels. In another aspect, a single preamble is transmitted in association with one or more frames. In another aspect, a block acknowledgement is transmitted subsequent to the transmission of one or more sequential frames.

Abstract: A wireless network device in a wireless network that includes a plurality of wireless network devices comprises n RF transceiver that transmits and receives data packets and that periodically transmits or receives a beacon. A control module communicates with the RF transceiver, determines a group identifier and a station identifier based on the beacon, and selects one of a default IFS time and a second IFS time based on a data packet received.

Abstract: Polling methods for use in a communication system, such as a fixed wireless communication system, are described. The fixed wireless communication system includes at least one wireless base unit and a plurality of fixed-location wireless transceiver units, where each transceiver unit is, for example, located at a home residence and coupled to a personal computer (PC). In one particular polling method, a wireless transceiver unit detects a failure of a primary energy source, switches to a battery backup for power, and sends a message to the wireless base unit indicating such failure. The message initiates the wireless base unit to poll the wireless transceiver unit on a periodic basis for status information. During the failure, a data traffic channel established between the units is torn down to conserve power at the wireless transceiver unit. Once the primary energy source is restored, the data traffic channel is brought back up and the periodic polling is terminated.

Abstract: Methods and apparatus for enhancing efficiency (e.g., reducing power consumption and bus activity) in a data bus. In an exemplary embodiment, a client-driven host device state machine switches among various states, each comprising a different polling frequency. A client device on the data bus (e.g., serial bus) checks for non-productive periods of polling activity, and upon discovering such a period, informs the host. The state machine then alters its polling scheme; e.g., switches to a lower state comprising a reduced polling frequency, and polling continues at this reduced frequency. In one variant, the client device continuously monitors itself to determine whether it has any data to transmit to a host device and if so, the host is informed, and the state machine restarts (e.g., to its highest polling state). By eliminating extraneous polling, power consumption and serial bus activity is optimized, potentially on both the host and the client.

Abstract: The present invention discloses a link scanning method for cascaded RCUs and a remote electrical tilt antenna system. The method includes: receiving, a link scanning message and sending the link scanning message to the RCU in the next cascaded RCU; generating, a link scanning response message, sending the link scanning response message to the RCU in the preceding cascaded RCU, and reporting the link scanning response message to the CCU, and sending, the link scanning message to the CCU. In the present invention, by adding a time delay in the link of the remote end serial communication bus, each RCU does not respond to the link scanning message simultaneously, the time-delayed link scanning response messages in the link of the remote end serial communication bus of each RCU are not aliased, therefore, the bus conflict problem of the link scanning when the RCUs are cascaded is effectively solved.

Abstract: A system for transmitting data directly between a plurality of client network devices in a network having an Access Point (“AP”) device separate from the plurality of client network devices is disclosed. The system may include a first client network device having a first client (“STA”) module and a second client network device of the plurality of client network devices.

Abstract: The present invention provides a system and method of determining available bandwidth at a physical layer (PHY) device at a server on a broadband network. A link layer controller of a master administrator adaptively polls a PHY device over a set of time intervals. During polling, the controller places a PHY device's address on a line of a bus and awaits a response from the PHY device. Based upon the response from the PHY device, the administrator can determine whether the PHY device has available bandwidth. The link layer controller uses this information to recalculate its polling scheme to better make use of the available bandwidth over the shared transmission medium to which each PHY device in the network is attached.

Abstract: A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared base station. A user may “piggyback” a new bandwidth request upon, or set a “poll-me bit” within, presently allocated bandwidth. A base station may poll users, individually or in groups, by allocating unrequested bandwidth for new requests. Polling may respond to a “poll-me bit,” and/or it may be adaptively periodic at a rate based on communication status parameters, such as recent communication activity and connection QoS levels. Group polling permits a possibility of collisions. Polling policies may be established for dynamically varying user groups, or may be determined for each user. Dynamic selection of appropriate polling techniques makes use of efficiency benefits associated with each technique.

Abstract: A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared base station. A user may “piggyback” a new bandwidth request upon, or set a “poll-me bit” within, presently allocated bandwidth. A base station may poll users, individually or in groups, by allocating unrequested bandwidth for new requests. Polling may respond to a “poll-me bit,” and/or it may be adaptively periodic at a rate based on communication status parameters, such as recent communication activity and connection QoS levels. Group polling permits a possibility of collisions. Polling policies may be established for dynamically varying user groups, or may be determined for each user. Dynamic selection of appropriate polling techniques makes use of efficiency benefits associated with each technique.

Abstract: A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared base station. A user may “piggyback” a new bandwidth request upon, or set a “poll-me bit” within, presently allocated bandwidth. A base station may poll users, individually or in groups, by allocating unrequested bandwidth for new requests. Polling may respond to a “poll-me bit,” and/or it may be adaptively periodic at a rate based on communication status parameters, such as recent communication activity and connection QoS levels Group polling permits a possibility of collisions. Polling policies may be established for dynamically varying user groups, or may be determined for each user. Dynamic selection of appropriate polling techniques makes use of efficiency benefits associated with each technique.

Abstract: A method and system operable to implement a multiple range, and optionally one-dimensional, transport scheduling process suitable to facilitate signal transport over a network for a variety of traffic types with different service requirements where two-dimensional mapping across frequency and/or time is required.

Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: Systems and methods for reducing overhead by using block acknowledgment with an all polling technique while attempting to meet latency and QoS requirements. Each node transmits a number of packets upon receiving a polling message. The Access Point (AP) then replies with a Block Acknowledgement (BlockAck), which is combined with a subsequent polling message and contains a bitmap that indicates 1 for a successfully received packet and 0 for a failed reception.

Abstract: Disclosed herein is a communication centralized control system including one master device; a communication bus; and a plurality of slave devices configured to be connected to the master device by the communication bus, wherein the master device and the plurality of slave devices are capable of bidirectional communication via the communication bus, and different channels are allocated to at least polling communication from the master device to the slave devices and interrupt communication from the slave devices to the master device, and communication is carried out with multiplexing on the same line.

Abstract: Systems and methods directed towards improving reliability for wireless networks. Selective polling techniques are utilized to selectively poll stations within a wireless network in order to ensure that a station failing to properly transmit data is given an opportunity to rectify the transmission failure. The selective polling techniques can be applied to any polling-based system, thus maintaining backwards compatibility with legacy systems.

Abstract: A communication system includes a first communication terminal configured to comply with a plurality of communication methods, and a second communication terminal that complies with any one of the communication methods, wherein the first communication terminal includes a network creating unit configured to transmit a notification signal including information about a network to create a network that complies with any one of the communication methods, a checking unit configured to check history information about a communication between the first communication terminal and the second communication terminal according to a notification signal including information about a network different from the network that has been created by the network creating unit, while the network creating unit has created the network, and a communication control unit configured to cause the first communication terminal to join the network created by the second communication terminal based on the history information.

Abstract: A method of generating a data block for performing a polling procedure in a wireless communication system, a method of transmitting data and a method of performing a polling procedure are disclosed. A protocol layer performs the polling procedure for requesting a receiving side to transmit status report if there are no data to be transmitted to the receiving side in both a transmission buffer and a retransmission buffer. When determining whether there are no data to be transmitted to the receiving side in the retransmission buffer, it is preferable that a data block for which retransmission request information is not received from the receiving side is excluded.

Abstract: A communication apparatus communicates with another communication apparatus connected to a transmission channel and sharing a communication band. The communication apparatus includes: a receiving unit that receives, through the transmission channel, data including time information based on a transmission time when a synchronous signal is transmitted to the transmission channel from a synchronous signal transmitting apparatus at a given cycle, the synchronous signal for synchronizing a plurality of communication apparatuses; a transmitting unit that transmits data to the transmission channel; and a transmission control unit that estimates a synchronous signal non-existing period in which there is no synchronous signal on the transmission channel on the basis of the time information received by the receiving unit and the given cycle, and controls the transmitting unit to transmit data within the estimated synchronous signal non-existing period.

Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.

Abstract: A method includes periodically sending a polling call to an enterprise system outside the firewall at a first polling rate during normal operating conditions, monitoring for a fault condition, periodically sending polling calls to the device outside the firewall at a second polling rate when a fault condition is detected, the second polling rate being higher than the first polling rate. The second polling rate is used as result of a fault condition. The method also includes sending a problem report with the polling calls when the fault condition is detected.

Abstract: A method of wireless communication between user equipments includes retrieving user data and a criterion via a software application on a first wireless user equipment having communication interfaces. One of the interfaces is selected based on the criterion. The interface is used to identify wireless user equipments in a proximity of the first user equipment. A total number of user equipments in the proximity of the first user equipment is determined, and, when the number is below a value, another interface is selected. The other interface is used to identify wireless user equipments in the proximity of the first user equipment. A match between the user data of the first user equipment and user data of a second user equipment, causes initiation of wireless communication between the first and the second user equipments by sending to any of the user equipments a message associated with the match.

Abstract: Techniques for scheduling flows and links for transmission are described. Each link is an oriented source-destination pair and carries one or more flows. Each flow may be associated with throughput, delay, feedback (e.g., acknowledgments (ACKs)) and/or other requirements. A serving interval is determined for each flow based on the requirements for the flow. A serving interval is determined for each link based on the serving intervals for all of the flows sent on the link. Each link is scheduled for transmission at least once in each serving interval, if system resources are available, to ensure that the requirements for all flows sent on the link are met. The links are also scheduled in a manner to facilitate closed loop rate control. The links are further scheduled such that ACKs for one or more layers in a protocol stack are sent at sufficiently fast rates.

Abstract: A web call server provides call processing for web calls. The call processing for web calls comprises routing, queuing, and/or provision of web service applications. For routing, the web call server receives a call request message. In response to receiving the call request message, the web call server identifies a web call center resource. The web call server then generates and transmits a routing instruction to route the web call to the web call center resource. For queuing, the web call server receives a call request message for a web call. The web call server then determines whether any web call center resource is available to handle the web call in response to receiving the call request message. The web call server then transfers a web call indicator to a web call queue in response to the determination that all web call center resources are unavailable. For web service applications, the web call server receives a call request message for the web call.

Abstract: A method of transmitting and receiving feedback information in a multi-cell based wireless communication system using FFR, a mobile station apparatus therefore and a base station apparatus therefore are disclosed. A mobile station is able to obtain FFR configuration information including configuration information on at least one frequency partition to which a corresponding FFR is applied per cell ID. And, the mobile station is able to transmit PMI information to a serving base station using the obtained FFR configuration information. In this case, the PMI information is specifically restricted or recommended by the mobile station among PMIs (precoding matrix indexes) used by at least one neighbor cell in an allocated specific frequency partition.

Abstract: Techniques for improving power saving by stations in wireless networks are described. In an aspect, a source station sends a frame with a buffer status for a recipient station during an awake time for both stations and sends one or more data frames to the recipient station as indicated by the buffer status. The recipient station knows how many data frames to expect based on the buffer status and can go to sleep after receiving the expected number of data frames. In another aspect, a source station receives a frame with information on transmission opportunity (TXOP) bursting receive capability of a recipient station operating in a power save mode. The source station performs channel access at the start of a TXOP and sends multiple data frames in the TXOP to the recipient station based on the TXOP bursting receive capability of the recipient station.

Abstract: Disclosed herein are various embodiments of collision avoidance systems and methods. One method embodiment, among others, comprises a client sending an end of transmission (EOT) request to an access point (AP), and responsive to the EOT request, the AP responding with an EOT frame.

Abstract: A method for reducing power consumption in a mobile station is provided. The method includes holding data associated with a first polling message until a first scheduled RF wake-up of the mobile station. The method also includes sending the data associated with the first polling message at substantially the same time as the first scheduled RF wake-up of the mobile station. The method further includes holding a second polling message until a second scheduled RF wake-up of the mobile station. The scheduled RF wake-ups of the mobile station are determined according to a schedule established by a service provider of the wireless communication network. In certain embodiments, the polling messages are associated with an ActiveSync® Ping command.

Abstract: A radio base station suitable for performing a handover operation for a LTE-variant of a radio access network comprises a transceiver and a status report requester. The transceiver is configured to facilitate wireless transmission between the radio base station and a wireless terminal over an air interface, including transmission of a radio link bearer for the connection over a downlink from the radio base station to the wireless terminal. The status report requester is configured to determine, according to one or more pre-defined criteria, whether to request from the wireless terminal a status report for a radio bearer prior to the radio base station transferring user data for the connection to another radio base station in conjunction with a handover.

Abstract: Techniques to efficiently schedule and serve stations in a wireless network are described. An access point may aggregate stations with flows carrying traffic having similar characteristics, e.g., VoIP flows. The access point may schedule these stations together in an overall service period. The access point may serve each station in a respective service period within the overall service period. The access point may send a multi poll frame at the start of the overall service period to indicate the start time and/or service period for each station. Each station may decide to power down until its start time. The service periods for the stations may overlap one another. The service period for each station may cover an initial transmission as well as additional transmission and/or retransmission. If additional transmission and/or retransmission are not needed for a given station, then the next station may be served right away.

Abstract: A method for allocating uplink radio resources to a radio communication device includes transmitting a polling signal; allocating radio resources for data transmission based on a response signal to the polling signal; suspending transmission of the polling signal when it is determined that a condition to omit the transmission of the polling signal is satisfied; and allocating radio resources for data transmission while the transmission of the polling signal is suspended.

Abstract: Presented is a method for synchronizing movement of a plurality of roller shades each disposed at a first position to a common second position. The method includes obtaining information related to the position of each of the plurality of roller shades with a respective one of a plurality of optical assemblies, and moving each of the plurality of roller shades from the first position to the common second position in response to the respective obtained position information so that each of the plurality of roller shades arrives at the common second position at the same time.

Abstract: Presented is a system for synchronizing movement of roller shades each from a first position to a common second position. The system includes a master controller, a plurality of optical assemblies each configured to obtain information related to the position of one of the roller shades, and a plurality of motor assemblies. Each of the motor assemblies is configured for receiving the position information from one of the plurality of optical assemblies, receiving a master shade movement time from the master controller, and moving one of the of roller shades from the first position to the common second position in response to the received position information so that the roller shade arrives at the common second position simultaneously with the other roller shades in a time equal to the master shade movement time.

Abstract: A method and apparatus for adaptively obtaining bandwidth requests in a broadband wireless communication system. The method and apparatus includes dynamically varying technique combinations enabling a plurality of users to efficiently request bandwidth from a shared base station. A user may “piggyback” a new bandwidth request upon, or set a “poll-me bit” within, presently allocated bandwidth. A base station may poll users, individually or in groups, by allocating unrequested bandwidth for new requests. Polling may respond to a “poll-me bit,” and/or it may be adaptively periodic at a rate based on communication status parameters, such as recent communication activity and connection QoS levels. Group polling permits a possibility of collisions. Polling policies may be established for dynamically varying user groups, or may be determined for each user. Dynamic selection of appropriate polling techniques makes use of efficiency benefits associated with each technique.

Abstract: A back-end locator service can be utilized to identify a specific computing device, from among multiple computing devices in a domain, that is the most appropriate computing device to handle a particular type of request for data or other resources. The data or resources hosted by the domain can be divided among multiple computing devices. The domain can expose a network-based application program interface where successive requests by a client computing device become more specific as to the data or resources requested. Responses from the computing devices in the domain can, at some point in time, be informed by the back-end locator service and can comprise location-specific resource identifiers. The client computing device can utilize such location specific resource identifiers to direct further communications to the appropriate, specific computing device without having to incur redirection inefficiencies.

Abstract: A communications device utilized in a wireless communications system has an RLC entity with a transmitting side and a receiving side. Handling timers during reestablishment of the transmitting side includes only reestablishing the transmitting side in the RLC entity of the communications device, stopping a first timer corresponding to the transmitting side, and prolonging and not stopping a second timer corresponding to the transmitting side. The second timer is not a periodic timer.

Abstract: A method and system for differential billing based on the access network through which data traffic flows between a subscriber and a service provider. The service provider may measure the amount of data traffic that flows to and from the subscriber and may determine which access network the traffic flows through on its way between the subscriber and the service provider. Based at least in part on the identity of the access network used, the service provider may determine a fee to charge the subscriber for handling the measured data flow.

Abstract: A communication protocol for a lighting control system having a plurality of control devices coupled to a communication link uses a polling technique to coordinate the transmission of digital messages between the control devices. When the control devices are powered up, one of the control devices is established as a “master” device. During normal operation, the master device transmits a standard poll message to each of the control devices in succession using a unique semi-permanent Poll ID for each of the control devices. The master device periodically transmits a Poll-ID-Request poll message to the control devices allow those devices that do not have a Poll ID to request a Poll ID. If a control device determines either that the master device is not transmitting poll messages to it, or that another control device has the same Poll ID, the control device drops its Poll ID and acquires another Poll ID.

Abstract: Providing for improved acknowledgment and retransmission protocols for wireless communication is described herein. By way of example, the acknowledgment and retransmission protocols can comprise including a poll element, or reply command, within a data unit that is part of a wireless transmission. A timer is set following sending the wireless transmission, and if a reply is not received within expiration of the timer, retransmission is triggered. According to specific aspects, retransmission comprises resending the data unit that includes the poll element or reply command. In this manner, redundant retransmission can be mitigated, whether because a receiver fails to successfully receive one or more subsets of the wireless transmission, or because the transmitter fails to obtain a reply to the wireless transmission.

Abstract: A method and an apparatus for indicating a temporary block flow (TBF) to which a piggybacked acknowledgement/non-acknowledgement (PAN) field is addressed. A method and apparatus of performing receive processing to reduce the probability of false acceptance of erroneous PANs are also disclosed. A transmit station generates a PAN check sequence (PCS) and performs a channel coding on a PAN field and the PCS. The transmit station scrambles the encoded bits of the PAN field and the PCS with a TBF-specific scrambling code. Because of the scrambling, the PCS decoding at a receive station will pass if the data block is received by an intended receive station, while the PCS decoding will fail if received by a non-intended receive station. Alternatively, the scrambling may be performed before the channel coding. Alternatively, the transmit station may combine the PAN field and a temporary flow identity (TFI) to generate a PCS.

Abstract: A wireless communication method and apparatus for recovering data following a serving cell change are disclosed. A wireless transmit/receive unit (WTRU) includes a status prohibit timer that delays the transmission of normal status reports that indicate the status of data, (i.e., PDUs), that was successfully received and/or not successfully received after a serving cell change status report is sent. A serving radio network controller (SRNC) transmits a sequence of packet data units (PDUs). The status prohibit timer is advanced and the WTRU sends a normal status report to the SRNC without a delay caused by the status prohibit timer. In another embodiment, the WTRU receives a radio link control (RLC) intelligence mode indicator signal that indicates whether a non-intelligent radio network controller (RNC) RLC operation or an intelligent RNC RLC operation is in effect, and the WTRU generates normal status reports based on the indication of the signal.

Abstract: With the advent of virtualization technologies, networks and routing for those networks can now be simulated using commodity hardware rather than actual routers. For example, virtualization technologies such as those provided by VMWare, XEN, or User-Mode Linux can be adapted to allow a single physical computing machine to be shared among multiple virtual networks by providing each virtual network user with one or more virtual machines hosted by the single physical computing machine, with each such virtual machine being a software simulation acting as a distinct logical computing system that provides users with the illusion that they are the sole operators and administrators of a given hardware computing resource. In addition, routing can be accomplished through software, providing additional routing flexibility to the virtual network in comparison with traditional routing. As a result, in some implementations, supplemental information other than packet information can be used to determine network routing.

Abstract: Provided are an apparatus and method for upstream transmission of variable bit rate traffic in a Hybrid Fiber Coaxial (HFC) network. The apparatus includes: a VoIP signal processing unit for digitizing a voice of a speaker to create a voice packet, detecting a mute section to suppress packet generation, and generating an Service identification (SID) packet in the mute section; a storage unit for storing the voice packet and the SID packet created by the VoIP signal processing unit and notifying information on the stored packets; a VoIP activity determining unit for determining a voice activity based on the information on the stored packets notified from the storage unit; and a packet processing unit for including the voice activity transferred from the VoIP activity determining unit in the packets from the storage unit to encapsulate them and transmit it to a network device.

Abstract: In a medium access method for contention and non-contention, a poll number for stations, or wireless terminals for communication, is managed by a base station so as to guarantee smooth traffic and improved Quality of Service (QoS). A first group of stations is provided for the non-contention, and a second group of stations is provided for the contention. The method includes (a) preparing a contention-free access message attempting access of the first group, (b) detecting a transmission time of a contention access message attempting access of the second group, (c) embedding the contention-free access message in the contention access message so as to transmit the embedded message to at least one of the first and second groups, and (d) receiving the contention access message, in which the contention-free access message is embedded, at the at least one of the first and second groups, and endowing any one of the first and second groups with a priority to attempt access to a medium in turn.