CN1253021C - Comprehensive switch on business realizing method based on aerial band width resources - Google Patents

Comprehensive switch on business realizing method based on aerial band width resources Download PDF

Info

Publication number
CN1253021C
CN1253021C CN 01139190 CN01139190A CN1253021C CN 1253021 C CN1253021 C CN 1253021C CN 01139190 CN01139190 CN 01139190 CN 01139190 A CN01139190 A CN 01139190A CN 1253021 C CN1253021 C CN 1253021C
Authority
CN
China
Prior art keywords
data
frame
transmission
business
mac
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 01139190
Other languages
Chinese (zh)
Other versions
CN1427634A (en
Inventor
张志华
李刚
范炯毅
林舒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN 01139190 priority Critical patent/CN1253021C/en
Publication of CN1427634A publication Critical patent/CN1427634A/en
Application granted granted Critical
Publication of CN1253021C publication Critical patent/CN1253021C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to an integrative access service realization method based on air bandwidth resources. The uplink transmission and the downlink transmission of E1 data are carried out between a terminal and a base station. The uplink transmission of the E1 data comprises the steps that (1) a bandwidth allocation MAP figure with a fixed cycle is generated to determine the uplink transmitting time of the E1 data; (2) the terminal writes the transmitting time of the E1 data into a hardware register according to the generated MAP figure; (3) the E1 data is transmitted according to the transmitting time in the hardware register; (4) the base station receives the E1 data according to a special identifying code. The downlink transmission of the E1 data comprises the steps that (5) the parameter of an E1 service is set in the hardware register; (6) the hardware sets a special area used for transmitting the E1 data in an MPEG frame according to the parameter; (7) the E1 data is placed in the area so as to be transmitted. The method of the present invention solves the problem that an appropriate air protocol for broadband wireless access systems does not exist; particularly, the method of the present invention enables the broadband wireless access systems to provide the E1 service, widens the application range of the DOCSIS protocol and increases the types of services offered by the broadband wireless access systems.

Description

A kind of comprehensive switch on business implementation method based on the air bandwidth resource
Technical field
The present invention relates to BWA in the communication field, particularly relate to a kind of comprehensive switch on business implementation method in the BWA based on the air bandwidth resource.
Background technology
BWA adopts the point-to-multipoint wireless transmission method to realize that the fixed wireless integrated service between user network and the backbone network inserts, and its service object mainly is a group user, is used for users' such as enterprise, residential quarter comprehensive access.
So far, do not have a kind of over-the-air protocol that is suitable for BWA, particularly can support the real-time circuit service that broadband wireless access provides.And DOCSIS agreement (Data-Over-Cable Service Interface Specifications) is the standard of formulating for the cable TV network bidirectional data transmission system, wherein mainly stipulate the implementation of physical layer and MAC layer, the point-to-multipoint integrated service that is used for cable TV network inserts.
Summary of the invention
The technical problem to be solved in the present invention is, transmission medium at BWA is different with cable network, and support the characteristics of real-time Circuit Service, the allocated bandwidth strategy of DOCSIS agreement is expanded and revises, overcome the DOCSIS agreement and do not support the shortcoming of broadband wireless access, provide the needs of real-time Circuit Service to satisfy BWA.
Technical program of the present invention lies in, a kind of comprehensive switch on business implementation method based on the air bandwidth resource is provided, comprise the up transmission and the descending transmission of E1 data, it is characterized in that,
Described E1 data uplink sends and may further comprise the steps: 1) generate the allocated bandwidth with fixed cycle and shine upon (MAP) figure to determine the transmitting time of up E1 data; 2) terminal is according to the MAP of described generation figure, and the transmitting time of E1 data is write hardware register; 3), send the E1 data according to the transmitting time in the described hardware register; 4) base station receives described E1 data according to special identification code,
Described E1 data downstream sends and may further comprise the steps: 1) the E1 service parameter is set in hardware register; 2) hardware is provided with in mpeg frame according to described parameter and is specifically designed to the zone that sends the E1 data; 3) the E1 data being put into above-mentioned zone sends.
In above-mentioned steps, relate to the DOCSIS mac frame, below it is simply introduced.The DOCSIS agreement is the MAC layer in the corresponding ISO OSI of regulation network seven layer protocols and the agreement of PHY layer, the topmost content of its MAC layer definition is to be guaranteed by the allocated bandwidth of base stations control and corresponding QoS, relate to simultaneously variable-length, multiple speed, and to the support of polytype bag in the future.
The elementary cell that sends between the MAC layer of base station and terminal is a mac frame.The uplink and downlink direction is used identical basic frame structure.The length of mac frame is variable, is divided into four kinds: the mac frame of bag PDU, the bag data PDU of the ethernet type of support variable-length; The mac frame of ATM cell has ATM PDU in the expression frame; The mac frame that keeps in the future PDU type; The mac frame that is used for specific MAC control.
Wherein specific mac frame is used for specific function, and these functions can support that descending timing and uplink distance measuring/power modulation, terminal are the cascade of terminal distribution bandwidth etc., segmentation and a plurality of mac frames to base station requests bandwidth, base station.
Step 1 in the above-mentioned up transmission relates to MAP, simply introduce the upstream bandwidth allocation map (MAP) of DOCSIS below, the data flow that up channel is made up of mini-slot, the base station must can generate the timing reference that is used to discern these time slots, in addition, it also must insert these time slots by control terminal.For example, it can be used to send data PDU for some continuous slot of authorization terminal.Terminal must receive in the official hour reference to guarantee the base station according to regularly requiring to send data.
System realizes the upstream channel bandwidth management by allocation map (MAP).MAP is by the MAC administrative messag of base station in the variable-length of down channel transmission, the transmission opportunity of definition up channel.It comprises fixed length letter head and many information element IE (INTERVAL ELEMENT), and each information element has defined the scope that allows the mini-slot of use.Given MAP can specify some time slot to send the mandate of data as specific station, and some time slot is used for contention requests, and some time slot is that new website adds incoming link and offers an opportunity.
Step 1 in the above-mentioned up transmission relates to the Bandwidth Management of the professional up channel of E1, for the E1 business, is specific real time business, and adopting to provide initiatively provides band width service (Unsolicited GrantService UGS).The base station is necessary for this Business Stream fixing data transfer bandwidth periodically is provided, and sets up Business Stream according to the professional way of E1 that this terminal is opened for the E1 data flow of each terminal, specifies relevant parameter.Then this Business Stream is activated, distribute SID.
For the E1 business, in primary MAP figure, data grant is carried out in each terminal E1 Frame transmission opportunity.Later on each base station no longer licenses to the E1 business in MAP figure, do not make other purposes (can will distribute to a SID who does not have terminal to use during this period of time) during this period of time but also do not specify.Terminal is preserved transmission opportunity and transmission cycle, still sends the E1 Frame according to certain cycle opportunity in transmission.But when transmission need change opportunity, (increase or reduce the circuit number of N * 64K as certain terminal), send MAP figure again, the transmission of E1 business is authorized opportunity.Simultaneously can once send mandate to the E1 business again every certain cycle (can much larger than the MAP cycle).
For realizing the E1 business, on DOCSIS agreement basis, done certain expansion, use a kind of frame interior, the definition in each territory is shown in Table 1 in the frame structure.
In the step 1 of above-mentioned up transmission, be no more than 5ms, in each MAP, need so same E1 business is carried out repeatedly data grant by the maximum transmitting time delay of standard-required E1 business in system.The time-delay of E1 business can not be above standard like this.
In primary MAP figure, data grant is carried out in each terminal E1 Frame transmission opportunity.Later on each base station no longer licenses to the E1 business in MAP figure, do not make other purposes during this period of time but also do not specify.Terminal is preserved transmission opportunity and transmission cycle, still sends the E1 Frame according to certain cycle opportunity in transmission.When transmission need change opportunity, (increase or reduce the circuit number of N * 64K as certain terminal), send MAP figure again, the transmission of E1 business is authorized opportunity.
Relate to specific identification code in the step 4 of above-mentioned up transmission, the reservation PDU frame head with reference to the DOCSIS mac frame is decided to be 0 * 8C with E1 data frame head, and principle is not repeat with the frame head (mainly being management frames and Frame) of other type.
The purpose one of using above-mentioned special frame head is in order to use hardware quickly and easily E1 traffic frame and the difference of IP Frame to be come; The 2nd, in order to pare down expenses.For each terminal, E1 frame length relative fixed does not have the source and destination MAC Address, does not therefore need a complete DOCSIS agreement mac frame head.And the transmission of E1 frame is more frequent, uses short inside frame head can save certain frame head expense; The 3rd, in order to distinguish different terminals.In inner frame head, to comprise simple terminal number, be used for distinguishing E1 frame head from different terminals.
Relate to mpeg frame in the step 2 of above-mentioned descending transmission, the Bandwidth Management of descending E1 business is mainly realized by hardware.The Bandwidth Management of descending E1 business is actually the distribution to the mpeg frame payload.In base station side, the E1 data of coming in by two E1 interfaces through string-and conversion after, according to the queuing Control Parameter that the webmaster assignation information is produced, finish the interconnection of Circuit Service, order enters downstream circuitry Business Stream FIFO.Framing, sequencing control and transtation mission circuit are according to the professional kind mpeg frame that produces of webmaster assignment E1 simultaneously.
Wherein two territories of P Circuit Service pointer and Circuit Service payload are optional territory, are determined it to have or not and are taken byte number by the configuring condition of E1 business.Under the situation that non-full configuration is put, the byte of these two territory remainders can be used as the data service payload.
For data service, can be the mpeg frame head, the Circuit Service pointer field, the length of Circuit Service payload is all regarded the part of physical layer as, is sightless to it.A Frame may be separated in several data service payload field transmission.Here also comprise the special MAC frame.Notice that the SYNC frame is special, cannot be interrupted, guarantee that it is in the professional payload field transmission of data by hardware.
The invention solves the problem that is not fit to the over-the-air protocol of BWA, particularly it makes BWA that the E1 business can be provided, improve the range of application of DOCSIS agreement, increased the type service that BWA provided.
Description of drawings
Fig. 1 is general mac frame structure;
Fig. 2 is a standard mac frame head form;
Fig. 3 is the mac frame head form that is used for E1 that expands;
Fig. 4 is a DOCSIS MPEG packet format;
Fig. 5 is the mpeg frame structure that can be used for E1 that expands;
Fig. 6 is the flow chart of the up transmission of E1 data among the present invention;
Fig. 7 is the flow chart of the descending transmission of E1 data among the present invention.
Embodiment
As shown in Figure 6, the present invention is based in the comprehensive switch on business implementation method of air bandwidth resource, the E1 data are finished up transmission by following steps:
1) generates allocated bandwidth and shine upon (MAP) figure to determine the transmitting time of up E1 data with fixed cycle;
2) terminal is according to the MAP of described generation figure, and the transmitting time of E1 data is write hardware register;
3), send the E1 data according to the transmitting time in the described hardware register;
4) base station receives described E1 data according to special identification code.
As shown in Figure 7, the present invention is based in the comprehensive switch on business implementation method of air bandwidth resource, the E1 data are finished descending transmission by following steps:
1) the E1 service parameter is set in hardware register;
2) hardware is provided with in mpeg frame according to described parameter and is specifically designed to the zone that sends the E1 data;
3) the E1 data being put into above-mentioned zone sends.
Fig. 1 is the general mac frame structure of DOCSIS, and as can be seen from Figure 1,3 territories are arranged in the general mac frame structure: before the mac frame is a physical media (PMD) sublayer expense (up) or a mpeg stream packet header (descending); The first of mac frame is MAC packet header, and this MAC packet header has identified the content of mac frame uniquely; After the packet header is optional data PDU territory.The form of data PDU and having or not in MAC packet header defines.
Fig. 2 is the general mac frame head of a DOCSIS form, and general MAC packet header all should have general frame head form shown in Figure 2, and each territory is as shown in table 1 in the form, and frame control (FC) territory is first byte, identifies all the other contents in the MAC packet header uniquely; Behind the FC territory 3 byte MAC control domains, an optional expanding packet header field (EHDR) and a packet header checking sequence (HCS).
Table 1
Territory, MAC packet header Usage Length
FC Frame control: the type in sign MAC packet header 8 bits
MAC_PARM Parameter field, usage depends on FC: if EHDR_ON=1 is used for EHDR length (ELEN); In the cascade frame, (see mistake! Do not find Reference source.) be used for the MAC frame count; Or the number (only being used for request message) of the expression mini-slot of being asked 8 bits
LEN (SID) The length of mac frame.Be defined as the byte number in the extension header and the summation of the byte number behind the HCS territory.(for the packet header of request message, this territory is substituted by traffic ID) 16 bits
EHDR Extended MAC packet header (variable-length) The 0-240 bit
HCS MAC packet header verification sequence 2 bytes
The length in MAC packet header 6 bytes+EHDR
Wherein the HCS territory is the CRC of one 16 bit, is used to guarantee the integrality in MAC packet header.It should cover whole M AC packet header, from the FC territory, and comprises the EHDR territory that is occurred.CRC (the x that this HCS defines with ITU-T suggestion X..25 16+ x 12+ x 5+ 1) calculates.
Wherein, the FC territory is divided into FC-TYPE subdomain, FC-PARM subdomain and an EHDR_ON Warning Mark, and its form sees Table 2.Wherein the FC_TYPE subdomain is the highest two bits in FC territory, one of 4 kinds of mac frame forms that these two bits express possibility: the MAC packet header of bag PDU; The MAC packet header of ATM cell; The MAC packet header that keeps in the future PDU type; Or be used for MAC packet header of specific MAC control.
Table 2
The FC territory Usage Length
?FC_TYPE Mac frame control types territory 00: the MAC packet header 10 of the MAC packet header 01:ATM PDU of bag PDU: the specific packet header of 11:MAC, MAC packet header that keeps PDU 2 bits
?FC_PARM Parameter bit, usage depend on FC TYPE 5 bits
?EHDR_ON During EHDR_ON=1, expression has EHDR territory (length of EHDR (ELEN) is determined by the MAC_PARM territory) 1 bit
5 bits of FC_TYPE back are the FC_PARM subdomains, and the usage of these bits depends on the type in MAC packet header; The significant bits in FC territory is the EHDR_ON designator, if this bit is 1, then expression has extension header (EHDR).
Transmission Convergence Sub-layer byte of padding sign indicating number type is defined as 0 * FE, and this makes the FC byte combination of FC_TYPE=11 and FC_PARM=11111 should not occur.
According to the FC territory, there is multiple use in the MAC_PARM territory in MAC packet header, if the EHDR_ON designator puts 1, then the MAC_PARM territory is applied to extension header length (ELEN), and the EHDR length of field can change between 0 to 240 byte; If this is a cascade MAC packet header, the number (CNT) of cascade mac frame is represented in the MAC_PARM territory so; If this is a request message MAC packet header (REQ), the MAC_PARM domain representation bandwidth number of being asked so.Under other situation, the MAC_PARM territory keeps to be done to use in the future.
There are two kinds of possible usages in the 3rd territory, and in most cases, it indicates the length (LEN) of this mac frame; In particular cases a kind of, promptly in request message MAC packet header, owing to do not follow PDU behind the MAC packet header, it is used to indicate CM ID.
Extension header (EHDR) territory provides expansion for the mac frame form.It is used for time slot data link security, frame segmentation, and the extendible function of supporting that future version increases of being used for.In elementary realization, this territory should be submitted to processor.Software upgrading later on just can be benefited from this ability.
MAC packet header can be later on a data PDU, and the type of data PDU and form define in the frame control domain in MAC packet header.The FC territory has clearly defined bag data PDU, ATM data PDU, MAC particular frame and a reservation coding (the escape mechanism when being used for doing expansion in the future).All CM should use the length field in the MAC packet header to skip all retention datas.
Fig. 3 is the mac frame head form that is used for E1 that DOCSIS expands.Reservation PDU frame head with reference to the DOCSIS mac frame is decided to be 0 * 8C with E1 data frame head, and principle is not repeat with the frame head (mainly being management frames and Frame) of other type.
Up channel is actually the data flow of being made up of mini-slot, and CMTS must can generate the timing reference that is used to discern these time slots, and in addition, it also must be controlled CM and insert these time slots.For example it can be used to send data PDU for CM authorizes some continuous slot.CM must receive in the official hour reference to guarantee CMTS according to regularly requiring to send data.The protocol elements of using in request, mandate and the upstream bandwidth distribution will be described below.Wherein, the allocated bandwidth Management Mechanism is to distribute MAP.
Distributing MAP is the MAC administrative messag that the CMTS down channel sends, and it has described the moment that up mini-slot sends.Given MAP can specify some time slot to send the mandate of data as specific station, and some time slot is used for the competition transmission, and other time slot is that new website adds incoming link and offers an opportunity.
Fig. 4 is the general mpeg format of DOCSIS, and it comprises the MPEG expense of 4 bytes, a pointer field (not being all to exist in all bags) and net load.Wherein the MPEG net load is used to carry mac frame.
Fig. 5 is the mpeg format that the present invention expands, and it comprises the MPEG expense of 4 bytes, a pointer field (not being in all bags, all to exist), and the net load front portion is the Circuit Service payload, the rear portion is other professional payload.
Compare with the general mpeg format of DOCSIS, the present invention has increased the Circuit Service payload.
Guarantee about the delay of E1 business, be no more than 5ms by the maximum transmitting time delay of standard-required E1 business in system, so at each MAP) in need same E1 business is carried out repeatedly secondary data mandate.The time-delay of E1 business can not be above standard like this.
In primary MAP figure, data grant is carried out in each terminal E1 Frame transmission opportunity.Later on each base station no longer licenses to the E1 business in MAP figure, do not make other purposes during this period of time but also do not specify.Terminal is preserved transmission opportunity and transmission cycle, still sends the E1 Frame according to certain cycle opportunity in transmission.When transmission need change opportunity, (increase or reduce the circuit number of N * 64K as certain terminal), send MAP figure again, the transmission of E1 business is authorized opportunity.
The present invention expands the DOCSIS agreement and improves, and this agreement can be applied to BWA, particularly after improving, can guarantee that BWA provides the E1 that satisfies certain maximum delay business.

Claims (8)

1, a kind of comprehensive switch on business implementation method based on the air bandwidth resource is carried out the up transmission and the descending transmission of E1 data between terminal and base station, it is characterized in that,
Described E1 data uplink sends and may further comprise the steps: 1) generate the allocated bandwidth with fixed cycle and shine upon MAP figure to determine the transmitting time of up E1 data; 2) terminal is according to the MAP of described generation figure, and the transmitting time of E1 data is write hardware register; 3), send the E1 data according to the transmitting time in the described hardware register; 4) base station receives described E1 data according to special identification code,
Described E1 data downstream sends and may further comprise the steps: 1) the E1 service parameter is set in hardware register; 2) hardware is provided with in mpeg frame according to described parameter and is specifically designed to the zone that sends the E1 data; 3) the E1 data being put into above-mentioned zone sends.
2, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, the transmitting element that carries out the MAC layer of uplink and downlink between base station and the terminal is the mac frame of variable-length, comprising: the mac frame of the bag data PDU bag of the ethernet type of support variable-length; The mac frame that the ATM cell of ATM PDU is arranged in the expression frame; The mac frame that keeps in the future PDU type; The mac frame that is used for specific MAC control.
3, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, carry out the up channel that the E1 data uplink sends and comprise the data flow that mini-slot is formed, described base station generates and sends the timing reference that can discern these time slots and the access slot of control terminal.
4, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, may further comprise the steps: for the E1 business, in primary MAP figure, data grant is carried out in each terminal E1 Frame transmission opportunity, terminal is preserved transmission opportunity and transmission cycle, send the E1 Frame opportunity in transmission according to certain cycle, but when need changing opportunity, transmission sends MAP figure, transmission to the E1 business is authorized opportunity, or, again the E1 business is once sent mandate every certain cycle.
5, according to the described comprehensive switch on business implementation method of claim 4 based on the air bandwidth resource, it is characterized in that, described mandate is included in to expand on the DOCSIS agreement basis uses a kind of frame interior, in each MAP, need same E1 business is carried out repeatedly data grant, in primary MAP figure, data grant is carried out in each terminal E1 Frame transmission opportunity.
6, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, described mandate comprises terminal preservation transmission opportunity and transmission cycle, send the E1 Frame according to some cycles opportunity by transmission, when transmission need change opportunity, send MAP figure, the transmission of E1 business is authorized opportunity.
7, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, described base station receives specific identification code in the described E1 data according to special identification code, with reference to the reservation PDU frame head of DOCSIS mac frame, E1 data frame head is decided to be 0x8C or other number that repetition does not take place with the frame head of other type.
8, according to the described comprehensive switch on business implementation method of claim 1 based on the air bandwidth resource, it is characterized in that, described hardware is according to described parameter, in mpeg frame, be provided with and be specifically designed to the zone that sends the E1 data, two territories of P Circuit Service pointer and Circuit Service payload are optional territory in the mpeg frame wherein, determine it to have or not and take byte number that by the configuring condition of E1 business under the situation that non-full configuration is put, the byte of these two territory remainders can be used as the data service payload.
CN 01139190 2001-12-21 2001-12-21 Comprehensive switch on business realizing method based on aerial band width resources Expired - Fee Related CN1253021C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01139190 CN1253021C (en) 2001-12-21 2001-12-21 Comprehensive switch on business realizing method based on aerial band width resources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01139190 CN1253021C (en) 2001-12-21 2001-12-21 Comprehensive switch on business realizing method based on aerial band width resources

Publications (2)

Publication Number Publication Date
CN1427634A CN1427634A (en) 2003-07-02
CN1253021C true CN1253021C (en) 2006-04-19

Family

ID=4675115

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01139190 Expired - Fee Related CN1253021C (en) 2001-12-21 2001-12-21 Comprehensive switch on business realizing method based on aerial band width resources

Country Status (1)

Country Link
CN (1) CN1253021C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100684305B1 (en) * 2003-07-18 2007-02-16 한국전자통신연구원 A method for allocating radio resource in wireless system and apparatus thereof
CN110446275B (en) * 2019-07-15 2021-04-13 安科讯(福建)科技有限公司 E1 point-to-point communication method, terminal and system

Also Published As

Publication number Publication date
CN1427634A (en) 2003-07-02

Similar Documents

Publication Publication Date Title
US8279892B2 (en) Upstream channel bonding in a cable communications system
US6055242A (en) Method and apparatus enabling synchronous transfer mode, variable length and packet mode access for multiple services over a broadband communication network
US7830795B2 (en) Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system
US8705567B2 (en) Upstream channel bonding using legacy maps in a cable communications system
US7006530B2 (en) Method and system for adaptively obtaining bandwidth allocation requests
US20190165898A1 (en) Method and apparatus for processing reverse transmission resources in a mobile communication system
Limb et al. A protocol for efficient transfer of data over hybrid fiber/coax systems
US20100235512A1 (en) Systems and methods for scheduling applications
KR20070058914A (en) Bandwidth allocation device and method to guarantee qos in ethernet passive optical access network
WO2002005453A2 (en) Method and apparatus for bandwidth request/grant protocols in a wireless communication system
ITMI982311A1 (en) CONVERGENCE PROTOCOL DEPENDENT ON A SUBNET FOR A MOBILE RADIO NETWORK.
Lin et al. An investigation into HFC MAC protocols: mechanisms, implementation, and research issues
WO2017020235A1 (en) Method and apparatus for controlling scheduling message
JP3508562B2 (en) Communication bandwidth allocation method
CN1253021C (en) Comprehensive switch on business realizing method based on aerial band width resources
EP1652342A2 (en) Method, access point and program product for providing bandwidth and airtime fairness in wireless networks
US8254394B1 (en) Technique for providing constant bit rate (CBR) service over a time-slotted access channel
KR19990034353A (en) Uplink Channel Allocation Method in Cable Modem Systems
KR19990034343A (en) Uplink Channel Allocation Method in Cable Modem Systems
Bestetti et al. Performance evaluation of a two-class scheduler for WiMAX networks
Fantacci et al. Performance analysis of a multiple access protocol for voice and data support in multiuser broadband wireless LANs
Chunfeng et al. A CDMA based scheduling algorithm with IP QoS guarantee
Zhang et al. A dynamic reservation protocol for prioritized multirate mobile data services based on DECT air interface
Shin et al. A packet scheduling scheme for broadband wireless networks with heterogeneous services
Schmidt et al. IST-1999-11571 EMBRACE D11 Medium Access Control for mixed traffic

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
ASS Succession or assignment of patent right

Owner name: SHENZHENG CITY ZTE CO., LTD.

Free format text: FORMER OWNER: SHENZHENG CITY ZTE CO., LTD. SHANGHAI SECOND INSTITUTE

Effective date: 20030723

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20030723

Applicant after: Zhongxing Communication Co., Ltd., Shenzhen City

Applicant before: Shanghai Inst. of No.2, Zhongxing Communication Co., Ltd., Shenzhen City

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060419

Termination date: 20131221