Patent application number | Description | Published |
20080219275 | Apparatus, method and computer program product providing neighbor discovery, handover procedure and relay zone configuration for relay stations in a multi-hop network - Methods for use in multi-hop relay networks are described. One method includes receiving a first message from a first relay station requesting a temporary suspension of communication between the first relay station and one or more user equipment. In response to receiving the first message, a second message is transmitted to the one or more user equipment. The second message includes instructions to the user equipment to temporarily suspend communication with the first relay station at a specific time. A third message is transmitted to the first relay station. A scanning operation is performed at the specified time in response to receiving the third message. A second method for use in multi-hop relay networks is also described. The second method includes transmitting a neighbor information message. The neighbor information message includes a relay zone offset indicating the start of a station in a frame structure. Several apparatus are also described. | 09-11-2008 |
20080220742 | EFFICIENT TECHNIQUES FOR ERROR DETECTION AND AUTHENTICATION IN WIRELESS NETWORKS - Various example embodiments are disclosed relating to efficient techniques for error detection and authentication in wireless networks. For example, according to an example embodiment, an apparatus adapted for wireless communication in a wireless network may include a processor. The processor may be configured to transmit a message including a field to provide both authentication and error detection for the message. The field may include an authenticated checksum sequence. | 09-11-2008 |
20080279145 | Aggregated harq report - A system and method include a base station configured to provide centralized data transmission scheduling for at least one relay operatively connected to the base station configured to provide centralized data transmission scheduling for at least one relay operatively connected to the base station in a point-to-point connection and configured to provide centralized data transmission scheduling for at least one mobile station operatively connected to the relay in a point-to-multipoint connection. The method efficiently reports ACKs/NAKs for a centralized scheduler wireless system that uses tunneling for data transmission and, in order to reduce a usage of bandwidth for reporting. The system and method also perform an aggregation via coding of ACK/NAK channels. | 11-13-2008 |
20090010198 | SHARED HARQ FEEDBACK CHANNELS FOR VIRTUAL GROUPING IN A WIRELESS RELAY NETWORK - Various embodiments are disclosed, which may include transmitting a transmission schedule for a data burst to a plurality of relay stations in a wireless relay network. The transmission schedule may identify a data channel for transmission of the data burst and a corresponding shared negative acknowledgment feedback channel for transmission of a negative acknowledgment. The negative acknowledgment feedback channel may be shared by the plurality of relay stations. | 01-08-2009 |
20090060010 | DIFFERENTIAL CHANNEL QUALITY REPORTING - Various example embodiments are disclosed herein. According to one example embodiment, a method may include obtaining a first channel quality measurement for a wireless node such as a mobile station or relay station in a wireless network. The method may further include sending, from the wireless node, a full channel quality indicator (CQI) to a base station based on the first channel quality measurement. The method may further include obtaining a second channel quality measurement for the wireless node. The method may further include sending a differential CQI to the base station based on comparing the second channel quality measurement to the first channel quality measurement. The differential CQI may occupy less channel resources than the full CQI. | 03-05-2009 |
20090074006 | METHOD AND APPARATUS FOR PROVIDING A COMMON ACKNOWLEGEMENT CHANNEL - An approach is provided for sharing a common acknowledgement channel. A coding and modulation scheme is selected, wherein the coding and modulation scheme utilizes a plurality of sub-carriers associated with a common acknowledgement channel serving a plurality of stations. A plurality of error control-enabled connections is mapped to the common acknowledgement channel by allocating a portion of the sub-carriers to one of the connections and another portion of the sub-carriers to another one of the connections. | 03-19-2009 |
20090092066 | TECHNIQUES FOR LINK UTILIZATION FOR HALF-DUPLEX AND FULL-DUPLEX STATIONS IN A WIRELESS NETWORK - Various example embodiments are disclosed herein. According to an example embodiment, an apparatus may include a controller, and a wireless transmitter coupled to the controller, the wireless transmitter configured to the wireless transmitter configured to transmit at least a portion of a frame via wireless link to one or more mobile stations in a wireless network, the at least a portion of a frame including: an all-group downlink region directed to group 1 half-duplex (HD) mobile stations, group 2 HD mobile stations, and full-duplex (FD) mobile stations, a group 1 downlink region directed to the group 1 HD mobile stations and the FD mobile stations, and a group 2 downlink region directed to the group 2 HD mobile stations and the FD mobile stations. | 04-09-2009 |
20090092076 | Method and apparatus to reduce system overhead - System throughput is improved by decreasing the system overhead by reducing the size of control packets and data packet headers. A connection identifier (CID) is divided into a CID part | 04-09-2009 |
20090109932 | Fast urgent services support over 802.16 air interface - Among the proposals of the present application is a method that includes receiving a bandwidth request with a code division multiple access code from a first network node to a second network node. The method also includes processing the bandwidth request at the second network node. The method further includes receiving a first portion of an urgent service data flow related to the bandwidth request after fewer than four round trips of communication between the first network node and the second network node. | 04-30-2009 |
20090141676 | METHOD AND APPARATUS FOR PROVIDING AN ERROR CONTROL SCHEME IN A MULTI-HOP RELAY NETWORK - An approach provides an error-control scheme within a multi-hop relay network. A determination is made of a first node that failed to transmit a packet generated according to an error-control scheme, wherein the first node is among a plurality of nodes configured to operate in a multi-hop network. Resources of the multi-hop network are reserved only for retransmission of the packet from the first node towards a destination node that is included in the plurality of nodes. | 06-04-2009 |
20090150737 | ACKNOWLEDGMENT PACKET - Various example embodiments are disclosed. According to an example embodiment, a receiving station in a wireless network may receive a plurality of Medium Access Control Packet Data Units (MPDUs) from a transmitting station. Each of the plurality of MPDUs may include a sequence number. The receiving station may also determine which of the plurality of MPDUs were successfully or not successfully received from the transmitting station. The receiving station may also transmit, to the transmitting station, at least one automatic repeat request (ARQ) feedback information element (IE). The at least one ARQ feedback IE may include a number of acknowledgment maps field indicating a number of acknowledgment maps included in the ARQ feedback IE and the indicated number of acknowledgment maps. Each of the acknowledgment maps may include a sequence format field indicating a number of block sequence fields and the indicated number of block sequence fields. Each of the block sequence fields may indicate a sequence length of successive packets which were successfully or not successfully received based on the determining which of the plurality of received MPDUs were successfully received from the transmitting station. | 06-11-2009 |
20090154412 | Enhanced dynamical fast-feedback channel allocations - A method includes allocating channels in a fast-feedback channel region for a plurality of devices, and transmitting to the plurality of devices at least one bitmap defining fast-feedback uplink channel allocations for individual ones of the plurality of devices. In one embodiment a plurality of bitmaps are transmitted, the plurality of bit maps together informing individual ones of the plurality of devices of permission to use none, one or more than one particular fast-feedback channel. In this case each bitmap includes a plurality n of bit positions corresponding to n indices, where each device is identified by an associated one of the n indices, and where a bit at an index value p in a first bitmap and a bit at the same index value p in a second bitmap, when concatenated together, equal a number of fast-feedback uplink channels that are allocated to a particular device associated with the index value p. | 06-18-2009 |
20090168722 | HANDOVER PROCEDURE - Various example embodiments are disclosed. One example embodiment may include determining, by a serving base station in a wireless network, to hand a mobile station over to a target base station. This example may further include receiving a base station-to-base station handover message from the target base station, the base station-to-base station handover message including at least one connection identifier (CID) associated with the target base station. This example may further include sending a base station-to-mobile station handover message to the mobile station based on the determining, the handover message including the at least one CID. | 07-02-2009 |
20090279488 | VARIABLE HEADER TYPES FOR PERSISTENT RESOURCE ALLOCATION IN A WIRELESS NETWORK - Various example embodiments are disclosed herein. According to an example embodiment, an apparatus may include a wireless receiver configured to receive a persistent resource allocation, the persistent resource allocation providing a periodically recurring resource, and a wireless transmitter configured to transmit a persistent data burst in a first frame via the persistent resource allocation, the persistent data burst including a compressed MAC (media access control) header that excludes (or omits) a connection identifier (CID) field, wherein the compressed MAC header of the persistent data burst includes a field that indicates that the MAC header of the persistent data burst is compressed. | 11-12-2009 |
20090279502 | INTERNETWORKING BETWEEN WMAN AND WLAN NETWORKS - According to one general aspect, a method of using a base station (BS) comprising receiving, by the BS of a first wireless network, a notification that a mobile station (MS) is entering a semi-idle state with respect to the first network, wherein the semi-idle mode is also associated with the MS performing a handover from a first wireless network based upon a first networking standard to a second wireless network based upon a second networking standard. Further comprising storing a portion of a set of context information associated with the MS. Also comprising allocating uplink resources for the MS only to receive location update messages from the MS. And, maintaining at least some of the context information of the MS. | 11-12-2009 |
20090285176 | FRAMEWORK FOR INTERNETWORKING BETWEEN WMAN AND WLAN NETWORKS - According to one general aspect, a method of using a customer premises equipment (CPE) to represent a mobile station (MS) to a base station (BS) is described. Wherein the CPE and the BS are part of a first wireless network based upon a first networking standard, and the MS and the CPE are part of a second wireless network based upon a second networking standard. The method comprising associating the MS with the CPE. The method further comprising indicating to the BS that the CPE is acting as an agent for the MS on the second wireless network. Also comprising acting as an agent, on the second wireless network, for the MS. And comprising, storing context information related to the MS, wherein the context information includes MS context information related the first network and MS context information related the second network. | 11-19-2009 |
20090310533 | MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT OVERHEAD IMPROVEMENTS - An apparatus comprising a controller configured to pack a plurality of Service Data Units (SDUs) from a plurality of connections associated with a Mobile Station (MS) into a single Medium Access Control (MAC) Protocol Data Unit (PDU). In various embodiments, the controller may be further configured to generate a Generic MAC Header (GMH) that indicates that a plurality of Service Data Units (SDUs) from a plurality of connections associated with a Mobile Station (MS) have been packed into the MAC PDU. In some embodiments, the controller may be further configured to generate, for each SDU, an associated Extended Packing Sub-Header (EPSH). The apparatus further comprising a memory configured to store MAC PDU. The apparatus also comprising a wireless transceiver configured to transmit the MAC PDU. | 12-17-2009 |
20100008314 | VARIABLE CODING LENGTH FOR RESOURCE ALLOCATION - According to one general aspect, a method comprising establishing a connection with at least one mobile station (MS). The method further comprising, in one embodiment, allocating communication resources, in resource blocks, to the MS. In various embodiments, the method also comprising selecting a size of a burst length field based in part upon a bandwidth and a number of orthogonal frequency-division multiplexing (OFDM) symbols used to communicate with the MS. In another example embodiment, the method also comprising selecting a size of a burst length field based in part upon a bandwidth and scheduling time duration (which can be based upon sub-frame, multiple sub-frame or frame duration) used to communicate with the MS. In one embodiment, the method may also include transmitting, to the MS, a message that includes the burst length field. In some embodiments, the burst length field may indicate to the MS the number of resource blocks allocated to the MS for purposes of communication. | 01-14-2010 |
20100008328 | HANDOVER TECHNIQUES BETWEEN LEGACY AND UPDATED WIRELESS NETWORKS - According to an example embodiment, an apparatus may include a processor. The apparatus may be configured to transmit a handover request message from a legacy serving base station to a target updated base station, the request message including an indication that a mobile station is compliant with an updated specification; and receive a handover response message at the legacy serving base station from the target updated base station, the handover response message including one or more updated system parameters assigned to the mobile station for an updated time zone of the target base station. | 01-14-2010 |
20100041445 | POWER SAVING SUPPORT FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include transmitting a scheduling information to a mobile station in a wireless network during a listening window, determining whether an acknowledgement has been received within the listening window from the mobile station that acknowledges receipt of the scheduling information, resetting a size of a next sleep window for the mobile station to an initial sleep window size if the acknowledgement has been received from the mobile station, and increasing a size of the next sleep window for the mobile station if the acknowledgement has not been received from the mobile station within the listening window. In another example embodiment, techniques are disclosed for determining a starting location of a next listening window for a mobile station in a wireless network. | 02-18-2010 |
20100054172 | FRAME SYNCHRONIZATION USING BIDIRECTIONAL TRANSIT AND RECEIVE ZONES - Various example embodiments are disclosed relating to synchronization of frames using bidirectional transmit and receive zones. An example method includes delaying, at a wireless relay station, a start time of a frame. In the example method, the start time of the frame is delayed, such that the relay station receives one or more data symbols from a superordinate wireless station and one or more data symbols from a subordinate wireless station at substantially the same time during the frame. | 03-04-2010 |
20100054202 | INTERFERENCE CONTROL AND RESOURCE ALLOCATION IN A LOCALIZED BASE STATION ENVIRONMENT - According to one general aspect, a method, in one embodiment, comprising establishing an indoor cellular access point (ICAP) on a network. In various embodiments, the method may also include co-operatively selecting an ICAP identifier (ID) such that the ICAP ID is unique amongst the ICAP and the NICAPs. In some embodiments, the method may further include sharing a wireless communications resource by multiplexing the use of the wireless communications resource amongst the ICAP and the NICAPs. | 03-04-2010 |
20100061354 | OFFSET TIME FOR RANGING REQUEST MESSAGES - Various example embodiments are disclosed. According to an example embodiment, a method may include sending, by a base station in a wireless network, a paging message to a mobile station, the paging message identifying the mobile station. The method may also include receiving, at an offset time after the sending the paging message, a ranging request message from the mobile station, the offset time being based at least in part on an identifier of the mobile station. | 03-11-2010 |
20100081454 | NEIGHBORHOOD PAGING GROUP DESIGN FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include storing, by a mobile station while in an active state, a neighborhood paging list, transitioning from active state to idle state, receiving a paging group ID from a local base station, determining that the paging group ID received from the local base station does not match any of the paging group IDs on the mobile station's neighborhood paging list, performing location update, updating the neighborhood paging list based on information received from the local base station, the updated neighborhood paging list including a paging group ID (PGID) identifying a local paging area corresponding to the local base station and a list of neighbor paging group IDs identifying one or more paging areas that are neighbors to the local paging area. | 04-01-2010 |
20100093384 | GUARD BAND UTILIZATION IN MULTI-CARRIER MODE FOR WIRELESS NETWORKS - Various example embodiments are disclosed herein. According to an example embodiment, an apparatus may include a processor which may be configured to: permute subcarriers of a regular band, including subcarriers assigned to mobile station(s) operating in a single carrier mode and subcarriers assigned to mobile station(s) operating in a multiple carrier mode, to generate a first permuted regular band of subcarriers; and permute subcarriers of the first permuted regular band that are assigned to mobile station(s) operating in multiple carrier mode with subcarriers of an adjacent guard band. | 04-15-2010 |
20100111061 | ADDRESSING SCHEME FOR A RELAY NETWORK SYSTEM - According to one general aspect, a method may include collecting at least one Mobile Station (MS) Medium Access Control (MAC) Packet Data Units (PDUs), associated with at least one Mobile Station. In various embodiments, the method may also include generating at least one MS station identifier (STID) sub-header (MSID-SH), indicating for each MS MAC PDU (MPDU) a MS STID that is associated the respective MPDU. In some embodiments, the method may include packing the MSID-SH and the at least one of MPDU into a single Relay MAC PDU (RPDU). In various embodiments, the method may also include wirelessly transmitting the RPDU. | 05-06-2010 |
20100111306 | SECURITY MODEL FOR A RELAY NETWORK SYSTEM - According to one general aspect, a method may include acquiring a message. In some embodiments, the method may also include determining if a relay station (RS) is allowed to manipulate portions of the message. In some embodiments, the method may also include, if so, generating a message authentication code (MsgAC) based upon a MsgAC key (MsgACK) known to the RS. In some embodiments, the method may also include combining the message with the MsgAC. In some embodiments, the method may also include wirelessly transmitting the combined message to the RS. | 05-06-2010 |
20100165921 | Mobile Station Handover in a Localized Base Station Environment - According to one general aspect, a method of operating a indoor cellular access point (ICAP) may comprise constructing a neighbor list of neighboring indoor cellular access points (NICAPs). The method may also include detecting at least one overlay macro base stations (OMBSs). In one embodiment, the method may further comprise associating the overlay macro base stations with the indoor cellular access point. The method may also include transmitting a message to a mobile station (MS) wherein the message includes the neighbor list. | 07-01-2010 |
20100260068 | Method for Neighbor Set Selection for Handover in a Home Access Environment - A macro wireless communication system includes a base station and a femto access point for communicating with user equipment (UE), such as handset, whereby the UE receives information regarding the network relationships between the base station and the femto access point. A home profile setting may be stored in the UE. When the UE communicates with a femto access point that is identified in the home profile, the UE adapts a neighbor listing provided by the home femto access point. Alternatively, the base station stores a list of the UE and its corresponding home femto access point, along with the neighbor list of the femto access point. When a UE is connected to the base station and that base station is in neighbor list of the UE's home femto access point, a message is sent to the UE to forward an appropriate neighbor list to simplify handovers. | 10-14-2010 |
20100265903 | ADAPTIVE ARQ BLOCK SIZE FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include participating in an automatic repeat request (ARQ)-enabled service flow between first and second wireless stations, wherein each transmitted MAC (media access control) protocol data unit (PDU) is partitioned into one or more ARQ-blocks, with each ARQ-block, except a last ARQ block of a MAC PDU, having a fixed size equal to an ARQ-block-size, negotiating a change to the ARQ-block-size for the service flow via a request and response message exchange. In another embodiment, a technique may include transmitting an ARQ block size change request for a service flow from a first wireless station to a second wireless station, the ARQ block size change request including one or more parameters relating to a new ARQ-block-size for the service flow; receiving, at the first wireless station from the second wireless station, an ARQ block size change response for the service flow in response to the transmitting the ARQ block size change request; and implementing the new ARQ-block size for the service flow based on the received ARQ block size change response. | 10-21-2010 |
20100290384 | HEADER TYPE NOTIFICATION FOR CO-EXISTANCE OF LEGACY HEADER AND NEW HEADERS ON SAME RADIO LINK - The exemplary embodiments of this invention generally relate to message header-type notification that, for example, enables the co-existence of a legacy header type with one or more new header types on a same radio link. In one non-limiting, exemplary embodiment, a method includes: determining a type of medium access control (MAC) header to transmit in a MAC transmission; setting a value of a notification field in a resource allocation message based on the determined type of MAC header; and transmitting the resource allocation message. In another non-limiting, exemplary embodiment, a method includes: receiving a resource allocation message having a notification field; and using a value of the notification field to determine a type of medium access control (MAC) header for a MAC transmission. | 11-18-2010 |
20100329197 | MOBILE STATION AGGREGATION OF ACKNOWLEDGMENTS AND NEGATIVE ACKNOWLEDGMENTS IN WIRELESS NETWORKS - Various example embodiments are disclosed herein. According to one example embodiment, a method may include determining, at a base station in a wireless network, an uplink channel quality for a mobile station, sending an acknowledgment/negative acknowledgment (ACK/NAK) aggregation indicator to the mobile station based on the determining, sending a plurality of data bursts to the mobile station, and receiving at least one aggregated ACK/NAK report from the mobile station. | 12-30-2010 |
20110010610 | Multi-User Packing Techniques for Wireless Network - Various example embodiments are disclosed herein. According to an example embodiment, a method may include transmitting a Media Access Control Protocol Data Unit (MAC PDU) via a wireless link to one or more mobile stations, the MAC PDU including a plurality of MAC management messages as a pay load, at least some of the MAC management messages directed to different mobile stations, the KIAC PDU including a MAC header having a connection ID field identifying a connection for all (or at least one, or a plurality) of the MAC management messages included in the MAC PDU. | 01-13-2011 |
20110032900 | Flexible Map Coding for Wireless Networks - A method for transmitting, to one or more wireless stations in a wireless network, map information identifying resources allocated to one or more of the wireless stations, the map information including a plurality of Maps, each Map allocating resources to one or more of the wireless stations, one or more of the Maps including a Next Map Pointer (NSP) that includes location information identifying a location of the next Map within a frame. | 02-10-2011 |
20110090879 | Method and Apparatus of Providing a Frame Structure for Supporting Different Operational Modes - An approach provides a frame structure for supporting different operational modes. A frame is generated for transmission over a network to a first device and a second device over a first bandwidth and a second bandwidth, respectively. The preamble provides synchronization for operation over the first bandwidth and the second bandwidth. | 04-21-2011 |
20110103253 | METHOD AND APPARATUS FOR PROVIDING POWER SAVING USING SUPERFRAMES - An approach is provided for providing sleep mode associated with a resource frame structure. A superframe that includes a plurality of frames that is partitioned into sub-frames is detected. A length of listening window ( | 05-05-2011 |
20110194538 | RESOURCE ALLOCATION DURING SILENCE PERIOD FOR A WIRELESS NETWORK - Various example embodiments are disclosed herein. According to an example embodiment, a technique may include allocating periodic resources to a mobile station in a wireless network for transmission of voice data, receiving from the mobile station an indication of a start of a silence period, and adjusting, based on the receiving of the indication of a start of silence period, the allocating of the periodic resources from a size and period of resource for the voice data to a size and period of resource for a silence indication (SID) frame. Alternatively, in response to receiving an indication of a start of silence period, the allocating of periodic resources for the VoIP voice data may be temporarily stopped during the silence period. | 08-11-2011 |
20110249644 | ALLOCATING RESOURCE UNITS TO A MOBILE STATION - Various example embodiments are disclosed. According to one example, a method may include permuting, by a superordinate station in a wireless network, physical resource units to logical resource units, the physical resource units of sequential logical resource units being noncontiguous. The method may also include sending at least one allocation message allocating a block of sequential logical resource units to each of a plurality of mobile stations, each of the allocated blocks being contiguous with at least one other allocated block. The method may also include de-allocating at least a first block of sequential logical resource units from a first mobile station selected from the plurality of mobile stations and a second block of sequential logical resource units from a second mobile station selected from the plurality of mobile stations, the first block of sequential logical resource units being noncontiguous with the second block of logical resource units. The method may also include sending at least one re-allocation message allocating the first block of sequential logical resource units and at least a portion of the second block of logical resource units to a new mobile station. | 10-13-2011 |
20120002589 | HANDOVER OR LOCATION UPDATE FOR OPTIMIZATION FOR RELATY STATIONS IN A WIRELESS NETWORK - Various embodiments are disclosed relating to the optimization of relay station handovers and location update in a wireless network. According to an example embodiment, a request to handover a plurality of mobile stations from a first base station to a second base station may be sent. An identifier associated with the second base station for each of the plurality of mobile stations may be received. In another example embodiment, each of the identifiers is forwarded to the mobile station corresponding to the connection identifier. In another example embodiment, a location update may be performed by sending a message to a network device, such as a target base station, to provide location update information for a plurality of mobile stations. In this manner, one message may be transmitted over a wireless link to facilitate a handover or location update for a plurality of mobile stations. | 01-05-2012 |
20120106416 | SYNCHRONIZATION RECOVERY AFTER LOSS OF SIGNALS FOR WIRELESS NETWORKS - Various example embodiments are disclosed. According to an example embodiment, a technique may include determining, by a mobile station, if either a traffic indication or data has been received at the mobile station from a base station during a listening window of a current sleep cycle; and increasing the size of a next sleep cycle, up to a maximum sleep cycle size, if neither the traffic indication nor the data are received during the listening window of the current sleep cycle. | 05-03-2012 |
20140341171 | Header Type Notification for Co-Existence Of Legacy Header And New Headers On Same Radio Link - The exemplary embodiments of this invention generally relate to message header-type notification that, for example, enables the co-existence of a legacy header type with one or more new header types on a same radio link. In one non-limiting, exemplary embodiment, a method includes: determining a type of medium access control (MAC) header to transmit in a MAC transmission; setting a value of a notification field in a resource allocation message based on the determined type of MAC header; and transmitting the resource allocation message. In another non-limiting, exemplary embodiment, a method includes: receiving a resource allocation message having a notification field; and using a value of the notification field to determine a type of medium access control (MAC) header for a MAC transmission. | 11-20-2014 |