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3 Definitions and abbreviations
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3.1 Definitions
For the purposes of the present document, the following terms and definitions apply: base station: Piece of equipment providing simultaneous, bi-directional network access to mobile stations. block: Fixed-length sequence of bytes from a MAC PDU. contention-free: Physical layer access method in which there is no possibi...
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3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply: ACK Acknowledged ARQ Automatic Repeat Request BE Best-Effort BS Base Station CL Controlled-Load DAWS Digital Advanced Wireless Service DL Downlink DQOS Data Integrity Quality Of Service IP Internet Protocol LLC Logical Link Control MAC Medium ...
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4 Introduction
The DAWS protocol architecture is provided in TR 101 156 [1]. The Medium Access Control (MAC) provides services to the Logical Link Control (LLC) and requests services from the Physical layer (PHY). The present document describes the services the MAC shall provide to function within a DAWS network. The prefix MAC will ...
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5 Registration Services
The MAC registration service (MAC_REG) is responsible for interacting with the PHY layer to maintain the highest possible signal quality for the current serving cell, as well as performing adjacent cell scans when requested by LLC_REG. MAC_REG is also responsible for managing hand-over in sectorised cells. This clause ...
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6 Bandwidth Management Services
The MAC bandwidth management service (MAC_BWM) is responsible for allocating bandwidth over the physical medium for MS in full-power and power-saving modes of operation. The BS and MS share bandwidth allocation responsibility, and are thus jointly responsible for the timing quality of service (TQOS) delivered to flows.
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6.1 Base station bandwidth management
BS_MAC_BWM shall allocate bandwidth on a per-MS basis, not a per-flow basis. BS_MAC_BWM shall consider the current state of all input queues and QOS contracts for each registered MS, and then shall dynamically allocate a portion of available free bandwidth to each MS. During multiframe N, BS_MAC_BWM shall prepare and s...
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6.2 Mobile station bandwidth management
MS_MAC_BWM shall divide the bandwidth allocation dynamically granted by BS_MAC_BWM among its acknowledged protocol processes. During times of increasing system congestion, MS_MAC_BWM shall decrease the TQOS for the best-effort protocol processes before decreasing the TQOS for the controlled-load protocol processes. MS_...
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6.3 Power management
MAC-BWM shall support a power conservation strategy which allows the MS to remain in a low power consumption state for a considerable portion of the time. A power conserving MS shall resume normal operation before attempting an MPDU transfer. The QOS delivered to an MPDU from a power conserving MS shall be equivalent t...
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7 Transport Services
The MAC transport service (MAC_TPT) is responsible for the transfer of MPDUs over the physical medium. This clause discusses the architecture of MAC_TPT, provides requirements for the protocols in the MAC_TPT protocol suite, and describes MAC_TPT error handling.
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7.1 Architecture
As shown in figures 2 and 3, MAC_TPT is composed of a suite of six separate protocols: • UNACK_DL: unacknowledged downlink; • UNACK_UL: unacknowledged uplink; • ACK_BE_DL: acknowledged downlink, best-effort traffic; • ACK_BE_UL: acknowledged uplink, best-effort traffic; ETSI TS 101 659 V1.1.1 (1999-04) 10 • ACK_CL_DL: ...
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7.1.1 Mobile station architecture
As shown in figure 2, MS_MAC shall create and maintain a pair of protocol processes, UNACK_DL and UNACK_UL, upon power-up. These processes handle the transfer of downlink and uplink PDUs using unacknowledged protocols. When MS_LLC registers with BS_LLC, the two LLCs co-operate to create a pair of protocol instances, AC...
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7.1.2 Base station architecture
As shown in figure 3, BS_MAC_TPT contains one pair of protocol processes, UNACK_BE_DL and UNACK_BE_UL, which handle all unacknowledged traffic within the serving cell. These protocol processes are created when the BS is powered up. BS_MAC_TPT shall contain one pair of protocol processes, ACK_BE_DL and ACK_BE_UL, for ea...
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7.2 Transport protocol suite
This clause describes the six protocols in the MAC_TPT protocol suite in more detail.
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7.2.1 Unacknowledged downlink
UNACK_DL shall utilize a contention-free PHY access method available via PHY_SAP_A. A BS shall use UNACK_DL for system information and broadcast MPDUs. UNACK_DL PDUs may carry either a unicast or broadcast MSH as the destination address.
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7.2.2 Unacknowledged uplink
UNACK_UL shall utilize a contention-possible PHY access method available via PHY_SAP_A. UNACK_UL PDUs may carry either a MSI or a unicast MSH as the source address. The MSI is used by an unregistered MS; the unicast MSH is used by a registered MS.
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7.2.3 Acknowledged protocols
The ACK protocols shall implement a selective retransmission, ARQ strategy for MPDU transfer. The ACK protocols shall employ extensive error-recovery procedures to minimize transfer failures. PDUs transferred by an ACK protocol may only carry a unicast MSH as the source or destination address. The ACK protocols shall d...
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7.2.3.1 Acknowledged Downlink, Best-effort QOS
ACK_BE_DL shall perform a physical layer bandwidth reservation and release for each individual MPDU transferred. If there are multiple MPDUs queued for transfer, ACK_BE_DL may delay bandwidth release until all queued MPDUs are transferred. The ACK_BE_DL bandwidth reservation sub-protocol shall utilize a contention-free...
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7.2.3.2 Acknowledged Uplink, Best-effort QOS
ACK_BE_UL shall perform a physical layer bandwidth reservation and release for each individual MPDU transferred. If there are multiple MPDUs queued for transfer, ACK_BE_UL may delay bandwidth release until all queued MPDUs are transferred. The ACK_BE_UL bandwidth reservation sub-protocol shall utilize a contention-poss...
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7.2.3.3 Acknowledged Downlink, Controlled-load QOS
ACK_CL_DL shall perform a physical layer bandwidth reservation upon instantiation and a physical layer bandwidth release upon termination. The ACK_CL_DL bandwidth reservation sub-protocol shall utilize a contention-free PHY access method. The MPDU transfer and bandwidth release sub-protocols shall also utilize a conten...
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7.2.3.4 Acknowledged Uplink, Controlled-load QOS
ACK_CL_UL shall perform a physical layer bandwidth reservation upon instantiation and a physical layer bandwidth release upon termination. The ACK_CL_UL bandwidth reservation sub-protocol shall utilize a contention-reduced PHY access method. The MPDU transfer and bandwidth release sub-protocols shall utilize a contenti...
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7.3 Transport failure handling
This clause describes how MAC_TPT shall respond to transport protocol failures. For this clause, the term "MPDU source" means a source either internal to the MAC or an SPDU passed via a MAC service access point.
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7.3.1 Unacknowledged downlink failure
The failure of UNACK_DL to transfer an MPDU shall not be signalled to the MPDU source. MPDU transfer will continue with the next queued MPDU, if any.
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7.3.2 Unacknowledged uplink failure
The failure of UNACK_UL to transfer an MPDU shall not be signalled to the MPDU source. MPDU transfer will continue with the next queued MPDU, if any.
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7.3.3 Acknowledged failure
The failure of an ACK protocol to successfully transfer an MPDU shall be interpreted as a localized link failure between a BS and an MS. All MPDUs queued for the failed protocol instance shall be discarded, an error shall be returned to the MPDU source, and the instance shall be deleted. All other ACK protocol instance...
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8 Service Primitives
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8.1 Primitive Definitions
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8.1.1 MAC_unack_transfer_request
Table 1 MAC_unack_transfer_request Usage BS and MS Source LLC Layer Destination MAC Layer Service Access Point A Multiple Outstanding No SDU Parameters LPDU This primitive is used by the LLC layer to pass a LPDU to the MAC layer for transfer to one or more peer MAC SAP As. If this primitive is issued by the BS, the dow...
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8.1.5 MAC_ack_transfer_confirm
Table 5 MAC_ack_transfer_confirm Usage BS and MS Source MAC Layer Destination LLC Layer Service Access Point B SDU Parameters ack_transfer_receipt_ack This primitive acknowledges the receipt of the LPDU associated with a MAC_ack_transfer_request. It does not indicate that the LPDU has been transferred to one or more pe...
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8.1.6 MAC_ack_transfer_indication
Table 6 MAC_ack_transfer_indication Usage BS and MS Source MAC Layer Destination LLC Layer Service Access Point B SDU Parameters protocol_instance_ID ack_transfer_result LPDU This primitive passes a received LPDU to the LLC layer. The protocol instance ID of the protocol instance which performed the transfer is provide...
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8.1.7 MAC_create_protocol_request
Table 7 MAC_create_protocol_request Usage BS and MS Source LLC Layer Destination MAC Layer Service Access Point C Multiple Outstanding No SDU Parameters protocol_instance_ID MS_handle protocol_type protocol_parameters This primitive requests the allocation of resources for a new acknowledged protocol instance.
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8.1.8 MAC_create_protocol_confirm
Table 8 MAC_create_protocol_confirm Usage BS and MS Source MAC Layer Destination LLC Layer Service Access Point C SDU Parameters create_protocol_result This primitive confirms the creation of the requested protocol.
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8.1.9 MAC_delete_protocol_request
Table 9 MAC_delete_protocol_request Usage BS and MS Source LLC Layer Destination MAC Layer Service Access Point C Multiple Outstanding Yes SDU Parameters protocol_instance_ID This primitive requests the deletion of a protocol instance. Any PDUs queued for transmission will be discarded. ETSI TS 101 659 V1.1.1 (1999-04)...
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8.1.11 MAC_hunt_request
Table 11 MAC_hunt_request Usage MS Source LLC Layer Destination MAC Layer Service Access Point C Multiple Outstanding No SDU Parameters --- This primitive tells the MAC to perform signal strength and signal quality measurements on the serving cell (if any) and all adjacent cells.
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8.1.12 MAC_hunt_confirm
Table 12 MAC_hunt_confirm Usage MS Source MAC Layer Destination LLC Layer Service Access Point C SDU Parameters hunt_result This primitive returns cell measurement results to MS_LLC.
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8.1.13 MAC_service_request
Table 13 MAC_service_request Usage MS Source LLC Layer Destination MAC Layer Service Access Point C Multiple Outstanding No SDU Parameters base_station_ID This primitive tells the MAC to camp on the BS specified by base_station_ID. ETSI TS 101 659 V1.1.1 (1999-04) 18
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8.1.14 MAC_service_confirm
Table 14 MAC_service_confirm Usage MS Source MAC Layer Destination LLC Layer Service Access Point C SDU Parameters service_result This primitive confirms a service request.
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8.1.15 MAC_service_indication
Table 15 MAC_service_indication Usage MS Source MAC Layer Destination LLC Layer Service Access Point C SDU Parameters service_status This primitive is used by the MAC to asynchronously provide the LLC with the latest service status.
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8.2 Parameter Definitions
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8.2.1 base_station_ID
This parameter specifies a particular DAWS BS. ETSI TS 101 659 V1.1.1 (1999-04) 19
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8.2.2 ack_transfer_receipt_ack
Table 16 ack_transfer_receipt_ack 0 success: receipt acknowledged 1 failure: transfer request already pending
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8.2.3 ack_transfer_result
Table 17 ack_transfer_result 0 success: transfer OK 1 failure: transfer failed or aborted
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8.2.4 configure_scheduling_result
Table 18 configure_scheduling_result 0 success: scheduler configured as requested 1 failure: specified protocol instance does not exist
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8.2.5 create_protocol_result
Table 19 create_protocol_result 0 success: requested protocol created 1 failure: create protocol request already pending 2 failure: requested resources unavailable
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8.2.6 delete_protocol_result
Table 20 delete_protocol_result 0 success: requested protocol deleted 1 failure: protocol instance does not exist
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8.2.7 hunt_result
This parameter consists of a list of available cells with associated signal strength and signal quality measurements. The parameter will be defined when the DAWS PHY is defined.
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8.2.8 LPDU
Definition of this parameter is beyond the scope of the present document. Most often, it will consist of a LLC layer header and an IP datagram.
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8.2.9 MS_handle
This parameter is an identifier used to identify a particular MS while it is registered with a BS. ETSI TS 101 659 V1.1.1 (1999-04) 20
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8.2.10 new_scheduling_state
Table 21 new_scheduling_state 0 scheduling disabled 1 scheduling enabled
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8.2.11 new_service_state
Table 22 new_service_state 0 service now unavailable 1 service now available (new subnet)
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8.2.12 protocol_instance_ID
This parameter uniquely identifies a protocol instance.
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8.2.13 protocol_parameters
This parameter contains information required by the MAC to properly manage the protocol instance. It will be further refined in a future version of the present document.
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8.2.14 protocol_type
Table 23 protocol_type 0 Best-effort downlink 1 Best-effort uplink 2 Controlled-load downlink 3 Controlled-load uplink
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8.2.15 queue_empty_result
Table 24 queue_empty_result 0 success: input queue of protocol instance is empty 1 failure: protocol instance does not exist
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8.2.16 service_result
Table 25 service_result 0 success: requested service now available 1 failure: could not complete request
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8.2.17 service_status
This parameter indicates whether service is currently provided, and if so, the base_station_ID, current signal strength, and quality of the service. This parameter will be further defined after the DAWS PHY is defined. ETSI TS 101 659 V1.1.1 (1999-04) 21
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8.2.18 unack_transfer_receipt_ack
Table 26 unack_transfer_receipt_ack 0 success: receipt acknowledged 1 failure: transfer request already pending ETSI TS 101 659 V1.1.1 (1999-04) 22 Bibliography The following material, though not specifically referenced in the body of the present document (or not publicly available), gives supporting information. - IET...
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1 Scope
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2 References
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3 Definitions, symbols and abbreviations
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3.1 Definitions
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3.2 Symbols
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3.3 Abbreviations
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4 General
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4.1 Measurement uncertainty
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4.2 Power Classes
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5 Frequency bands and channel arrangement
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5.1 General
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5.2 Frequency bands
..............................................................................................................................12 5.3 TX–RX frequency separation ..........................................................................................................12
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5.4 Channel arrangement
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5.4.1 Channel spacing
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5.4.2 Channel raster
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5.4.3 Channel number
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6 Transmitter characteristics
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6.1 General
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6.2 Transmit power
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6.2.1 UE maximum output power
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6.3 Frequency stability
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6.4 Output power dynamics
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6.4.1 Open loop power control
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6.4.2 Inner loop power control in the uplink
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6.4.3 Minimum transmit output power
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6.5.1 Transmit OFF power
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6.5.3 Change of TFC
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6.5.4 Power setting in uplink compressed mode
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6.6 Output RF spectrum emissions
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6.6.1 Occupied bandwidth
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6.6.2 Out of band emission
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6.6.3 Spurious emissions
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6.7 Transmit intermodulation
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6.7.1 Minimum requirement
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6.8 Transmit modulation
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6.8.1 Transmit pulse shape filter
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6.8.2 Modulation Accuracy
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6.8.3 Peak code domain error
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7.0 Receiver characteristics
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7.1 General
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7.2 Diversity characteristics
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7.3 Reference sensitivity level
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7.3.1 Minimum requirement
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